Class / Patent application number | Description | Number of patent applications / Date published |
254134400 | By fluid pressure differential in conduit (e.g., parachute sucked through conduit) | 14 |
20080203368 | Line runner for conduit - A carrier for pulling line through conduit, the carrier or line runner being an inflatable plastic sleeve that is closed at one end with gusset openings at the other end through which a line may pass and be tied to itself so that when the line runner is placed in a conduit with its closed end in the direction of travel, the application of lower pressure at the closed end will cause the sleeve to inflate and be propelled in the direction of the lower pressure pulling the line with it. | 08-28-2008 |
20090026429 | Optical Fibre Installation Apparatus - A blowing head for installing blown cable, comprising a low-inertia motor using electrical current, operable to obtain the advance of the cable within the blowing head, adjusting means operable to vary the level of current of the motor, and low-inertia sensing means to sense movement and changes in the level of movement of the cable within the blowing head, wherein in use the adjusting means varies the level of current used by the motor in response to changes in the level of movement sensed by the sensing means, and wherein the varying level of current does not exceed a maximum current level. | 01-29-2009 |
20090236575 | Cable Laying Device - The laying device of a slender element in a tube comprises on the one hand an introduction cassette and on the other hand a driving body, these two elements being able to be mounted independently around the slender element to be laid, then joined to form said laying device. This makes installation of said device in a laying site easier. | 09-24-2009 |
20090242860 | CABLE INSTALLATION - A method of installing a cable into a conduit, the conduit having more than one bore size, comprising the steps of—introducing air to flow in a direction into and through the conduit, and—changing an air pressure level of the air within the conduit from a first pressure level to a second pressure level by either venting a part of the air from the conduit or adding to the air within the conduit. | 10-01-2009 |
20090256124 | DEVICE FOR LAYING CABLE IN A CONDUIT - The device for installing a wire in a conduit of the type with thin walls and ribbed, comprises in particular a support sleeve suitable for preventing a radial expansion as well as a lengthening of a portion of said conduit above ground. | 10-15-2009 |
20100155681 | OPTICAL FIBRE INSTALLATION APPARATUS - A blowing head for installing an optical fibre unit into a tube, including driving means for driving the optical fibre unit into the tube, the driving means having a plurality of driving surfaces, wherein one or more attic plurality of the driving surfaces are resiliently biased with a predetermined force toward the other driving surface or surfaces, and wherein in use the optical fibre unit moves between the plurality of driving surfaces. | 06-24-2010 |
20110042631 | CABLE-INSERTING APPARATUS - The closed long bag enclosed a little air is connected to the preliminary line for inserting cable into the conduit by the small suction pump. The shape of closed long bag enclosed a little air can be changed easily. As the result, the closed long bag moves through a narrow portion and a bending portion of the conduit smoothly. Furthermore, air in a tail portion of the closed long bag moves to a head portion of the closed long bag by difference between the front portion and the end portion of the closed long bag. The head portion of the bag expands and the tail portion of the bag shrinks. As the result, the bag pulls the line very strongly. | 02-24-2011 |
20110084244 | CABLE INSTALLATION USING OPTICAL DETECTION - A device for use with a conduit having a first conduit end and a conduit second end, into which conduit a cable can be installed using a flow of air into the first conduit end, the device being suitable for confirming that the flow of air is exiting the second conduit end, the device including a housing, means to enable connection of the device to the second conduit end, a light source, a detector arranged to detect a presence or absence of a light signal, and a light shield, wherein in use, the flow of air entering the device causes the light shield and at least one of the light source or the detector, to move to and to stay at a position relative to the other, permitting the detector to detect detections including one or more of a presence or absence of the light signal, an intensity level of the light signal, a change in the presence or absence of the light signal, or a change in the intensity level of the light signal. | 04-14-2011 |
20110227011 | Method and apparatus for introducing an item into a conduit - A projectile is utilized to introduce an item into a conduit which already has a cable therein. The projectile includes a body member having a longitudinal opening therethrough. The body member is longitudinally split so that the cable may be received in the opening. The item is attached to the body member. When the projectile with a portion of the cable received therein is put into a conduit and air under pressure is introduced into the conduit, the projectile is pushed along the cable and if the cable is undulating in the conduit, it is straightened and positioned out of the way of the item being introduced. | 09-22-2011 |
20110248227 | PROTECTION FOR A BUCKLING DETECTION HEAD - The buckling detection head is completely encapsulated in an encapsulating material, thus making it possible to protect the emitting and receiving surfaces of the cells for emitting and receiving light signals. This arrangement provides a slot in which the absolutely smooth cable passes, making it easier to clean the head and protect the cells. Other advantages of this arrangement are also described. | 10-13-2011 |
20110272652 | TRENCHLESS DUCTING APPARATUS FRAME - An apparatus for moving an elongate component within or through a sidewall of a pit, including a frame, a lever arm pivotably attached to the frame and comprising a handle at a first end, a gripping arrangement pivotably attached to the lever arm at a second end at a gripping pivot point, allowing the gripping arrangement to pivot about the gripping pivot point to assume a first and a second installation position, wherein in a first installation position during use the gripping arrangement grips the elongate component as the lever arm pivots in a first direction and releases the elongate component as the lever arm pivots in a second, opposite, direction, and wherein in a second installation position during use the gripping arrangement releases the elongate component as the lever arm pivots in a first direction and grips the elongate component as the lever arm pivots in a second, opposite, direction. | 11-10-2011 |
20120267590 | Process, Pig and Pressure Housing for Laying an Elongated Element - A method for laying an elongated element in a duct using a fluid injected under pressure through a fluid inlet in a pressure housing disposed at the elongated element inlet extremity of the duct. A mechanical drive placed before the pressure housing and the duct pushes the elongated element into the pressure housing and the duct. The method includes installing a first front end pulling pig at the front end of the elongated element and installing at least one subsequent pulling pig around the elongated element. The distance between each pulling pig is mainly constant. The method also includes applying the same maximum pressure drop to each pulling pig. The total pressure of the fluid injected being mainly equally shared by all the pulling pigs. | 10-25-2012 |
20130277629 | Method for Laying a Plurality of Successive Sections of Cables in Order to Form a Cabled Connection of Great Length - A method for laying a plurality of cable sections to be successively positioned in series in a buried duct, according to a flowing-pushing method using a pressurized fluid. The different cable sections are successively introduced into the duct in a single entry point comprising a laying device notably comprising an orifice for introducing a pressurized fluid, a cable section entirely introduced into the duct is pushed towards the position which it should occupy in the duct, only by the pressure of the fluid introduced by said laying device and when a cable section has reached his final position in the duct, an opening is made in the duct near to the rear of the cable section. | 10-24-2013 |
20140353561 | SYSTEM AND METHOD FOR GUIDING A CABLE - An apparatus and method for pulling an article such as a cable are disclosed. The apparatus includes a body having a portion configured to releasably secure the article. A compression force can be applied to secure the article and prevent slippage. A connector is provided at an end of the apparatus to facilitate attachment of a guide such as a thread. | 12-04-2014 |