Clifton, GB
Andrew J. Clifton, Bristol GB
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20100049487 | ASSESSMENT TOOL - There is provided a method comprising the steps of determining an environmental impact of a product by: identifying one or more processes performed during the life cycle of the product; selecting identifying at least one design parameter relating to a the product and being associated with the identified process or processes; representing each of the identified processes by a process model, the process model identifying interventions by the process on the environment; and quantifying the interventions of each process on the environment using the at least one design parameter; and determining at least one environmental impact of the product from the design parameter or parameters; and generating an output indicating the environmental impact of the product. | 02-25-2010 |
David Clifton, Edinburgh GB
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20100014761 | Methods And Systems For Discriminating Bands In Scalograms - The present disclosure is directed towards embodiments of systems and methods for discriminating (e.g., masking out) scale bands that are determined to be not of interest from a scalogram derived from a continuous wavelet transform of a signal. Techniques for determining whether a scale band is not of interest include, for example, determining whether a scale band's amplitude is being modulated by one or more other bands in the scalogram. Another technique involves determining whether a scale band is located between two other bands and has energy less than that of its neighboring bands. Another technique involves determining whether a scale band is located at about half the scale of another, more dominant (i.e., higher energy) band. | 01-21-2010 |
20120123689 | METHODS AND SYSTEMS FOR DISCRIMINATING BANDS IN SCALOGRAMS - The present disclosure is directed towards embodiments of systems and methods for discriminating (e.g., masking out) scale bands that are determined to be not of interest from a scalogram derived from a continuous wavelet transform of a signal. Techniques for determining whether a scale band is not of interest include, for example, determining whether a scale band's amplitude is being modulated by one or more other bands in the scalogram. Another technique involves determining whether a scale band is located between two other bands and has energy less than that of its neighboring bands. Another technique involves determining whether a scale band is located at about half the scale of another, more dominant (i.e., higher energy) band. | 05-17-2012 |
20130011032 | Systems and Methods for Ridge Selection in Scalograms of Signals - According to embodiments, systems, devices, and methods for ridge selection in scalograms are disclosed. Ridges or ridge components are features within a scalogram which may be computed from a signal such as a physiological (e.g., photoplethysmographic) signal. Ridges may be identified from one or more scalograms of the signal. Parameters characterizing these ridges may be determined Based at least in part on these parameters, a ridge density distribution function is determined A ridge is selected from analyzing this ridge density distribution function. In some embodiments, the selected ridge is used to determine a physiological parameter such as respiration rate. | 01-10-2013 |
20130041240 | Methods and Systems for Discriminating Bands in Scalograms - The present disclosure is directed towards embodiments of systems and methods for discriminating (e.g., masking out) scale bands that are determined to be not of interest from a scalogram derived from a continuous wavelet transform of a signal. Techniques for determining whether a scale band is not of interest include, for example, determining whether a scale band's amplitude is being modulated by one or more other bands in the scalogram. Another technique involves determining whether a scale band is located between two other bands and has energy less than that of its neighboring bands. Another technique involves determining whether a scale band is located at about half the scale of another, more dominant (i.e., higher energy) band. | 02-14-2013 |
20140016840 | SYSTEMS AND METHODS FOR RIDGE SELECTION IN SCALOGRAMS OF SIGNALS - According to embodiments, systems, devices, and methods for ridge selection in scalograms are disclosed. Ridges or ridge components are features within a scalogram which may be computed from a signal such as a physiological (e.g., photoplethysmographic) signal. Ridges may be identified from one or more scalograms of the signal. Parameters characterizing these ridges may be determined. Based at least in part on these parameters, a ridge density distribution function is determined. A ridge is selected from analyzing this ridge density distribution function. In some embodiments, the selected ridge is used to determine a physiological parameter such as respiration rate. | 01-16-2014 |
David Clifton, Oxford GB
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20160076535 | PUMP MONITORING SYSTEM AND METHOD - A system for monitoring the operation of a surface pump such as a hand-operated water pump or oil pump, which uses an accelerometer mounted to a component of the pump to monitor movement of a pump component, for example the handle, and transmitted via a data connection such as a mobile data communications network to a server. The accelerometer measurements are processed by using a trained model such as a support vector machine to output an indication of the condition of the pump or the level of liquid in the well or borehole served by the pump. The model may be trained using a training data set of sensor measurements associated with liquid level in the well and condition of the pump. | 03-17-2016 |
David Clifton, Midlothian GB
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20090324034 | SYSTEMS AND METHODS FOR RIDGE SELECTION IN SCALOGRAMS OF SIGNALS - According to embodiments, systems, devices, and methods for ridge selection in scalograms are disclosed. Ridges or ridge components are features within a scalogram which may be computed from a signal such as a physiological (e.g., photoplethysmographic) signal. Ridges may be identified from one or more scalograms of the signal. Parameters characterizing these ridges may be determined. Based at least in part on these parameters, a ridge density distribution function is determined. A ridge is selected from analyzing this ridge density distribution function. In some embodiments, the selected ridge is used to determine a physiological parameter such as respiration rate. | 12-31-2009 |
David Clifton, Newmarket GB
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20090187381 | Novelty detection - A method and apparatus for detecting an abnormality in e.g. in operating characteristics or function of a machine, apparatus or system, the method including providing a data sample set comprising n values of a measured physical parameter associated with the apparatus or system generated by repeating a measurement of the physical parameter n times. An extremal measured parameter value is selected from amongst the data sample set, determining a probability of observing the selected parameter value (e.g. of observing a value not exceeding the selected parameter value) by applying the selected parameter value to an extreme value probability distribution function having a location parameter and a scale parameter. The value of the location parameter and the value of the scale parameter are each constructed using an integer value m (e.g. notionally representing the size of a sub-sample data set comprising m of said measured parameter values) in which m is less than n (i.e. m07-23-2009 | |
David Clifton, Dunfermline GB
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20130301927 | METHOD OF IDENTIFYING ANOMALIES IN IMAGES - A method of identifying anomalies in images produced using an imaging device ( | 11-14-2013 |
20140050416 | IDENTIFYING AND CORRECTING ANOMALIES IN AN OPTICAL IMAGE - An embodiment of the invention provides an apparatus and a method. An intensity gradient between first and second optical image data of an optical image produced by an optical scanning device is determined. The first optical image data is a first optical image pixel and the second optical image data is a second optical image pixel. An intensity gradient image comprising a plurality of intensity gradient image pixels is determined, each intensity gradient image pixel representing the magnitude of an intensity gradient. One or more anomalies in the optical image in dependence on the magnitude of the intensity gradient being greater than or equal to a threshold value is identified. | 02-20-2014 |
David Clifton, Shandon GB
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20150254849 | METHODS AND APPARATUS FOR IMAGE PROCESSING, AND LASER SCANNING OPHTHALMOSCOPE HAVING AN IMAGE PROCESSING APPARATUS - A laser scanning ophthalmoscope obtains images of a retina. An image is processed by (i) mapping an image along a one dimensional slice; (ii) computing a wavelet scalogram of the slice; (iii) mapping ridge features from the wavelet scalogram; repeating steps (i), (ii) and (iii) for one or more mapped image slices. The mapped ridge features from the slices are superimposed. Textural information is derived from the superimposed mapped ridge features. The analysis can be tuned to detect various textural features, for example to detect image artefacts, or for retinal pathology classification. | 09-10-2015 |
20150324966 | IMPROVEMENTS IN OR RELATING TO IMAGE PROCESSING - An image processing apparatus uses first and second digital vascular image data to register two images. The two images may be from different imaging modes. The first and second images are processed with a two-dimensional, directional filter ( | 11-12-2015 |
David A. Clifton, Oxford GB
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20120035885 | METHOD AND APPARATUS FOR MONITORING AND ANALYZING VIBRATIONS IN ROTARY MACHINES - Vibration amplitudes are recorded as a function of rotation speed and of frequency and the data is analyzed to estimate a noise floor amplitude threshold for each of a plurality of different speed and frequency sub-ranges. On the basis of training data known to be normal speed-frequency areas which contain significant spectral content in normal operation are deemed “known significant spectral content”, so that during monitoring of new data points which correspond to significant vibration energy at speeds and frequencies different from the known significant spectral content can be deemed “novel significant spectral content” and form the basis for an alert. The estimation of the noise floor is based on a probabilistic analysis of the data in each speed-frequency area and from this analysis an extreme value distribution expressing the probability that any given sample is noise is obtained. | 02-09-2012 |
20130044012 | METHOD AND APPARATUS FOR COMPRESSION AND DE-COMPRESSION OF SPECTRAL DATA - A method and apparatus for data compression, particularly applicable to spectral signals such as Fast Fourier Transforms of vibration data. The data is merged to remove redundant frequencies when recorded at multiple sample rates, thresholded with respect to a noise floor to remove even more redundant data, and then the positions of non-zero signal values, with respect to the noise floor, are recorded in a first dataword and the non-zero signal values themselves are all recorded concatenated to form a second dataword. The compressed data set consists of the first and second datawords, together with the value of the noise floor, maximum original amplitude and the broadband power. In the event of successive data sets having the same or similar locations for non-zero signal values a re-use flag may be set and the locations dataword discarded. Preferably the signal values are non-linearly quantized to further reduce the amount of data. | 02-21-2013 |
David Andrew Clifton, Oxford GB
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20140149325 | SYSTEM MONITOR AND METHOD OF SYSTEM MONITORING - A method of system monitoring or, more particularly, novelty detection, based on extreme value theory in particular a points-over-threshold POT method which is applicable to multimodal multivariate data. Multimodal multivariate data points collected by continuously monitoring a system are transformed into probability space by obtaining their probability density function (pdf) values from a statistical model of normality, such as a pdf fitted to a training data set of normal data. Extremal data is defined as that whose pdf value is below a predetermined threshold and a new analytic function, in particular the Generalised Pareto Distribution (GPD) is fitted to that extremal data only. The fitted GPD can be compared to a GPD fitted to the extremal datapoints of the training data set of normal data to determine if the monitored system is in a normal state. Alternatively a threshold can be set by calculating an extreme value distribution of the GPD fitted to the extremal data of the training data set and setting as the threshold the pdf value which separates a desired proportion, e.g., 0.99 of the probability mass from the remainder. If the minimum pdf value of a set of data points collected from the system is below the threshold, the system may be abnormal. | 05-29-2014 |
20140303454 | REMOTE MONITORING OF VITAL SIGNS - A method of remote monitoring of vital signs by detecting the PPG signal in an image of a subject taken by a video camera such as a webcam. The PPG signal is identified by auto-regressive analysis of ambient light reflected from a region of interest on the subject's skin. Frequency components of the ambient light and aliasing artefacts resulting from the frame rate of the video camera are cancelled by auto-regressive analysis of ambient light reflected from a region of interest not on the subject's skin, e.g. in the background. This reveals the spectral content of the ambient light allowing identification of the subject's PPG signal. Heart rate, oxygen saturation and breathing rate are obtained from the PPG signal. The values can be combined into a wellness index based on a statistical analysis of the values. | 10-09-2014 |
20150227837 | SYSTEM MONITORING - A method of monitoring a system such as a machine, industrial system, or human or animal patient, to classify the system as normal or abnormal, in which a time-series of measurements of the system are regarded as a function to be compared to a model of normality for such functions. The model of normality can be constructed as a Gaussian Process and test functions compared to the model to derive the probability that they are drawn from the model of normality. A probability distribution for the expected extrema of sets of functions drawn from the model can also be derived and the probability of any extremum of a plurality of test functions being an extremum of a set derived from the model of normality can be obtained. The system can be classified as normal or abnormal based on the extreme probability distribution. Test functions with fewer data points can be compared to the model of normality by marginalisation with respect to the missing data points. | 08-13-2015 |
20150379370 | METHOD AND SYSTEM FOR SIGNAL ANALYSIS - An image of a human, animal or machine subject, is analysed to detect regions which include strong periodic intensity variations, such as a photoplethysmogram (PPG) signal in a human or animal, or some periodic vibration in a machine. The image is divided into plural regions of fixed order is fitted to a representative intensity signal for that region. The poles of the fitted autoregressive model are thresholded by magnitude to select only the pole or poles with a magnitude greater than the threshold. The pole magnitude therefore acts as a signal quality index. The dominant pole is representative of the strongest periodic information and the frequency of that spectral component can be derived from the phase angle of the pole. The image may be redisplayed with image attributes, e.g. colour-coding, according to the pole magnitude in each region of interest and/or the dominant pole phase angle in each region of interest. In the case of a PPG image signal this can give maps of heart rate and breathing rate. | 12-31-2015 |
John Christopher Clifton, Hartley Wintney GB
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20120243590 | DEVICE FOR USE IN A POWER LINE COMMUNICATION SYSTEM, POWER LINE COMMUNICATION SYSTEMS AND POWER LINE COMMUNICATION METHOD - A device including a power input supplying external AC power to the device via a power cord, a filter filtering noise from outside of the supplied external AC power and thereby generating a filtered AC power, at least one power socket supplying the filtered AC power to at least one other device, and a PLC modem configured to be connected to the at least one power socket and to transmit data to or receive data from the at least one other device via power line communication using the filtered AC power. The device may be used in power line communication systems. A power line communication method uses the device for isolating a power line communication network from a mains grid. | 09-27-2012 |
John Christopher Clifton, Hampshire GB
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20110241782 | POWER AMPLIFIER - A power amplifier comprises a series stack of power amplifier devices, connected in parallel to the amplifier input for receiving an RF input signal, and having output terminals being connected in series to the amplifier output. An intermediate coupling capacitor is connected between each adjacent pair of power amplifier devices in the series stack of power amplifier devices for DC isolation of said power amplifier devices. This reduces the required DC supply voltage, as well as allowing shorting of individual power amplifier devices in response to variation in the DC supply voltage. | 10-06-2011 |
20130090125 | LTE FREQUENCY CHANNEL AVOIDANCE - A method of reducing interference to reception of streams of television content received at a television receiver in which each of the streams of television content are transmitted on one of a plurality of frequency channels in accordance with a channel map which defines on which of the plurality of frequency channels each stream of television content is transmitted and the interference being caused by a base station transmitting data to or receiving data from one or more mobile devices via radio communication signals in a vicinity of the television receiver. The method includes identifying the channel map and adapting a transmission of the radio communication signals between the base station and the one or more of mobile devices in accordance with the identified channel map to reduce interference at the television receiver. | 04-11-2013 |
20160037351 | METHOD OF INTERFERENCE AVOIDANCE AND BASE STATION - A method of reducing interference to reception of streams of television content received at a television receiver in which each of the streams of television content are transmitted on one of a plurality of frequency channels in accordance with a channel map which defines on which of the plurality of frequency channels each stream of television content is transmitted and the interference being caused by a base station transmitting data to or receiving data from one or more mobile devices via radio communication signals in a vicinity of the television receiver. The method includes identifying the channel map and adapting a transmission of the radio communication signals between the base station and the one or more of mobile devices in accordance with the identified channel map to reduce interference at the television receiver. | 02-04-2016 |
John Christopher Clifton, Hook Hampshire GB
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20130076987 | METHOD, AUDIO/VIDEO APPARATUS AND COMMUNICATION DEVICE - A method and apparatus reducing interference to reception of television signals received by a television receiver. The television receiver includes an antenna receiving television signals and a tuner selecting the television signals transmitted on a carrier signal. The interference is produced by a communication device transmitting radio communication signals that can be received by the television receiver when the tuner is tuned to the television signals. The method transmits a radio beacon signal from a location substantially same as a location of the television receiver, and if the radio beacon signal is detected at the communication device, adapts transmission of the radio communication signals from the communication device to reduce interference at the television receiver. As examples, the communications device is a mobile communications device, mobile telephone, personal computer, or a base station, for example disposed within a house for forming a femto cell. | 03-28-2013 |
John M. Clifton, Hertford Heath GB
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20140304484 | FLEXIBLY STORING DEFINED PRESETS FOR CONFIGURATION OF STORAGE CONTROLLER - Storing defined presets for configuration of a storage controller may include providing a storage controller interface to define a preset associated with an action of the storage controller; receiving preset parameter values for the preset via the interface; validating the preset parameter values to check that the preset is valid; storing the preset within the storage controller, and creating one or more preset objects from the preset, the preset object being accessible by the storage controller at run time. The preset may include a human-readable name; an action name indicating to which associated storage controller action the preset applies, and a set of parameter name-value pairs. | 10-09-2014 |
John M. Clifton, Eastleigh GB
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20100011177 | METHOD FOR MIGRATION OF SYNCHRONOUS REMOTE COPY SERVICE TO A VIRTUALIZATION APPLIANCE - A method, system, computer program product, and computer program storage device for receiving and processing I/O requests from a host device and providing data consistency in both a primary site and a secondary site, while migrating a SRC (Synchronous Peer to Peer Remote Copy) from a backend storage subsystem to a storage virtualization appliance. While transferring SRC from the backend storage subsystem to the storage virtualization appliance, all new I/O requests are saved in both a primary cache memory and a secondary cache memory, allowing a time window during which the SRC at the backend storage subsystem can be stopped and the secondary storage device is made as a readable and writable medium. The primary cache memory and secondary cache memory operates separately on each I/O request in write-through, read-write or no-flush mode. | 01-14-2010 |
John M. Clifton, Hertforshire GB
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20150324267 | DIAGNOSING ENTITIES ASSOCIATED WITH SOFTWARE COMPONENTS - In one embodiment, a method includes evaluating event history information for each of one or more events associated with a hardware entity against a symptom rule, the symptom rule defining a validity state of a diagnosis. The method also includes identifying contextual information by receiving and inspecting the event history information in response to the symptom rule being satisfied and the diagnosis being validated. An indication of the validity state of the diagnosis is sent to at least one subscriber that has requested a subscription specifically for the diagnosis. | 11-12-2015 |
John M. Clifton, Hertford GB
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20120089874 | DIAGNOSING ENTITIES ASSOCIATED WITH SOFTWARE COMPONENTS - In one embodiment, a system includes a recording module adapted for recording event history information for one or more events associated with an entity, an evaluating module adapted for evaluating the event history information for each of the one or more events associated with the entity against a symptom rule, wherein the symptom rule defines a validity state of a diagnosis, an issuing module adapted for issuing a subscription to one or more subscribers, wherein the subscription enables the one or more subscribers to receive diagnosis information, and an indicating module adapted for indicating the validity state of the diagnosis to the subscriber, wherein the recording module and the evaluating module are independent such that the issuing module and the event history information are substantially decoupled. Other systems, methods, and computer program products are also described, according to various embodiments. | 04-12-2012 |
20120239982 | METHODS FOR DIAGNOSING ENTITIES ASSOCIATED WITH SOFTWARE COMPONENTS - In one embodiment, a method includes recording event history information for one or more events associated with an entity; evaluating the event history information for each of the one or more events associated with the entity against a symptom rule, wherein the symptom rule defines a validity state of a diagnosis; issuing a subscription to one or more subscribers, wherein the subscription enables the one or more subscribers to receive diagnosis information; and indicating the validity state of the diagnosis to the subscriber, wherein the recording and the evaluating are performed independently such that the issuing and the event history information and the are substantially decoupled. Other methods are also described, according to various embodiments. | 09-20-2012 |
20150255116 | COMPUTER NODE TESTING - A computer node comprises dual hard drives. A method of testing the computer node comprises performing a test of the first hard drive, waiting a specific time period, and performing a test of the second hard drive. Each test comprises isolating the drive being tested, writing data to the drive being tested, removing power from the drive being tested, repowering the drive being tested, and reading data from the drive being tested. | 09-10-2015 |
John Mark Clifton, Hertford GB
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20080292300 | Method, Apparatus and Software for Processing Photographic Image Data Using a Photographic Recording Medium - The present invention relates to a method, apparatus or software for processing photographic image data using a photographic recording medium arranged for capturing successive optical images in a series of discrete frames. | 11-27-2008 |
John Mark Clifton, Hertfordshire GB
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20080247405 | APPARATUS AND METHOD FOR SWITCH ZONING - An apparatus for assigning a device to a network zone comprises a switch component operable to receive an attachment request, port and device name data and device operating characteristics data from the device; and a rules engine operable to acquire the device operating characteristics data from the switch component; the rules engine being operable to apply rules logic to the device operating characteristics data to select a zone for the device. The rules engine may be further operable to apply the rules logic to the port and device name data. The network zone may be a network zone of a fibre channel network. | 10-09-2008 |
20090319586 | NON-DISRUPTIVE FILE SYSTEM ELEMENT RECONFIGURATION ON DISK EXPANSION - An apparatus is operable with a host and a data storage component for controlling expansion of storage, and comprises: an allocating component responsive to a user input for allocating an expanded target storage space to a file system element to thereby make an expanded file system element; a file system metadata component for maintaining file system metadata including metadata for said expanded file system element; a file system I/O component responsive to said file system metadata component for controlling file system I/O between said host and said storage component; and a synchronizing component responsive to said file system metadata component for synchronizing data between a source storage space and said expanded target storage space; wherein said file system I/O component is operable to use said file system metadata component to access said expanded file system element prior to completion of action of said synchronizing component. | 12-24-2009 |
20120209805 | NON-DISRUPTIVE FILE SYSTEM ELEMENT RECONFIGURATION ON DISK EXPANSION - An apparatus is operable with a host and a data storage component for controlling expansion of storage, and comprises: an allocating component responsive to a user input for allocating an expanded target storage space to a file system element to thereby make an expanded file system element; a file system metadata component for maintaining file system metadata including metadata for said expanded file system element; a file system I/O component responsive to said file system metadata component for controlling file system I/O between said host and said storage component; and a synchronizing component responsive to said file system metadata component for synchronizing data between a source storage space and said expanded target storage space; wherein said file system I/O component is operable to use said file system metadata component to access said expanded file system element prior to completion of action of said synchronizing component. | 08-16-2012 |
Mark V. Clifton, Berkshire GB
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20100009879 | METHOD OF LUBRICATING A CONVEYOR BELT - The present invention relates to a method of lubricating a conveyor belt, wherein a lubricant concentrate containing at least 0.1 wt-% of at least one free fatty acid and at least one corrosion inhibitor is employed as a dry lubricant in a dry lubrication process. | 01-14-2010 |
Robin Clifton, Hertfordshire GB
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20130323367 | EXTENDED LIFE FOOD PRODUCT - The present invention relates to a food product which is an ambient toastable sandwich with an extended shelf life and which can contain either savoury or sweet fillings As described herein for optimum taste performance the final food product is preferably toasted by the consumer. | 12-05-2013 |
Russell Anthony Clifton, Manchester GB
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20120306181 | MULTI-PURPOSE WHEELED CONVEYANCE - A conveyance is described which is intended for transporting people, primarily babies and children, though can be adapted for transporting adults, including disabled and injured people and scaled down for use as a child's toy. Its construction places it primarily within the field of wheeled conveyances with capabilities allowing it to be multi-purpose. The invention seeks to combine the functions of the people transportation conveyance and a rucksack, which can be detachably built into the rear of the seating area to carry the weight of the conveyance and child. With the conveyance folded it is put onto the back of a person and carried with the rucksack available to carry other items. With the extrusions extended the conveyance can act as a “shopping trolley” style conveyance as a carrying aid. With the front wheels raised and the seat unfolded the conveyance can be carried on the back and used as a baby carrier. | 12-06-2012 |