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David W. Smith
David W. Smith, Rock Springs, WY US
| Patent application number | Description | Published |
|---|---|---|
| 20100226840 | Removal of impurities in the production of crystalline sodium carbonate, bicarbonate, or sulfite - A magnesium treatment for removing water-soluble impurities in a process for making crystalline sodium carbonate, bicarbonate, or sulfite. A waste comprising such impurities is treated with a magnesium compound to form water-insoluble matter which is removed to form a purified solution. The treatment may be performed on a solution which contains the waste and optionally dissolved calcined trona. The purified solution may be used as a feedstock to form crystalline soda ash, and/or used as a reactant to produce crystalline sodium sulfite or bicarbonate via reaction with SO | 09-09-2010 |
David W. Smith, Oakmont, PA US
| Patent application number | Description | Published |
|---|---|---|
| 20100199992 | CUSHION INSIDE A CUSHION PATIENT INTERFACE - A patient interface device that includes a mask shell and a cushion assembly. The cushion assembly includes a seal cushion and a support cushion. The seal cushion contacts a first area of a patient's face to form a seal therewith. The support cushion defines a second area over a face of such a patient when the patient interface device is being worn. The second area overlaps at least a portion of the first area. | 08-12-2010 |
David W. Smith, Simpsonville, SC US
| Patent application number | Description | Published |
|---|---|---|
| 20100107640 | Air cooling apparatus for a purge valve - A cooling enclosure for a valve includes an elongated housing body having a pair of housing portions and a pair of removable end plates, the pair of housing portions separable along at least one longitudinally-extending seam. Fastener devices are provided for securing the pair of housing portions engaged along the at least one longitudinal extending seam. One or more apertures are provided for accommodating a like number of valve fittings, and cooling air inlet and outlet openings are also provided in the housing body for supplying and removing cooling air to the housing body. | 05-06-2010 |
| 20100162708 | METHODS, APPARATUS AND/OR SYSTEMS RELATING TO FUEL DELIVERY SYSTEMS FOR INDUSTRIAL MACHINERY - An assembly for delivering a supply of liquid fuel and a supply of purge air to a gas turbine engine, the assembly comprising: an annular dual-flow check valve for controlling the flow through concentric channels that have a common outlet, the annular dual-flow check valve comprising: an outer body and an inner body that define the concentric channels, which include an outer channel and an inner channel formed therein; a spring activated annular poppet that resides in the outer channel and has a range of motion in the axial direction; and an opening through the inner body that connects the outer channel to the inner channel; wherein the axial movement of the annular poppet is regulated by the pressure of the flow upstream of the annular poppet in the outer channel; and the axial range of motion of the annular poppet includes at least two axial positions. | 07-01-2010 |
David W. Smith, Woodbridge GB
| Patent application number | Description | Published |
|---|---|---|
| 20100142962 | MULTIWAVELENGTH TRANSMITTER - A multiwavelength transmitter comprises several laser sources ( | 06-10-2010 |
David W. Smith, Sugar Land, TX US
| Patent application number | Description | Published |
|---|---|---|
| 20090177552 | Pre-Paid Activation and Replenishment on a Point-of-Sale Device - A system and method for processing prepaid financial transactions. The system and method describe the utilization of one or more remote terminals that are adapted to acquire transaction information from a user and transmit a first signal indicative of the transaction information. The remote terminal is further adapted to receive a second signal indicative of authorizing information that is delivered to the user. In addition, an authorizing host is adapted to receive the first signal transmitted by the one or more remote terminals. In one aspect, the authorizing host routes the first signal including the transaction information to an exchange host for approval of the financial transaction, and the exchange host transmits the second signal including the authorizing information to the remote terminal via the authorizing host. | 07-09-2009 |
David W. Smith, Ipswich GB
| Patent application number | Description | Published |
|---|---|---|
| 20090016741 | OPTICAL COMMUNICATION - The present invention relates to a method of optical communication, in particular optical communication involving spectral filtering in a passive optical network. The method includes the steps of: (i) performing a first spectral filtering function on a source signal having a spectral width so as to generate a plurality of feeder signals that are spectrally spaced apart from one another; (ii) performing a respective noise reduction function on the feeder signals; (iii) combining the feeder signals over a common waveguide of the optical link; (iv) receiving the feeder signals carried over the optical link and modulating the received feeder signals so as to impose data thereon; and, (v) returning the modulated feeder signals over the optical link so as to communicate the imposed data. Because noise is reduced centrally, a simpler passive optical network can be achieved. | 01-15-2009 |
David W. Smith, Shelby, MI US
| Patent application number | Description | Published |
|---|---|---|
| 20080271645 | MOUNTABLE TABLE FOR THE REAR OF A VEHICLE - The present disclosure provides a mountable recreation fable that mounts on the rear of the vehicle while the vehicle is parked and the tailgate is open. The recreation table includes a table top and a table pole attached to the underside of the table top. A table mount attaches to the rear of the vehicle, and the mount includes a receiver for the table pole to be inserted into. The mount is secured to either a striker or a seat headrest in the rear of the vehicle. Advantageously, the recreation table of the present disclosure easily attaches to the rear of the vehicle. The recreation table can be utilized in combination with seats in the rear of the vehicle, and the present disclosure requires no modification to attach the table to the vehicle. | 11-06-2008 |
David W. Smith, Scottsdale, AZ US
| Patent application number | Description | Published |
|---|---|---|
| 20080215181 | METHOD AND SYSTEM FOR PERFORMING INVASIVE MEDICAL PROCEDURES USING A SURGICAL ROBOT - A method and system for performing invasive procedures includes a surgical robot which is controlled by a guidance system that uses time of flight calculations from RF transmitters embedded in the robot, surgical instrument, and patient anatomy. Sensors around the room detect RF transmissions emitted by the RF transmitters and drive the robot according to a preprogrammed trajectory entered into the guidance system. | 09-04-2008 |