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| Number | Title | Issue Date |
| 8413770 | Systems and methods for retarding the speed of a railcar Systems and methods for retarding the speed of a railcar are provided. A supply of pressurized hydraulic fluid is provided to a piston cylinder to actuate the cylinder and thereby move a brake into a closed position in which the brake will apply a predetermined brak... | 04/09/2013 |
| 8365876 | Air bladder actuator for railroad car retarder An air bladder actuator for a railroad car retarder utilizes a simplified stroke limiting arrangement that can be used in new actuator construction or applied as a retrofit assembly to an existing air cylinder actuated retarder. ... | 02/05/2013 |
| 7530432 | Bladder-actuated railroad retarder An air bladder actuated railroad car retarder is designed to simplify installation, operate in a manner imposing minimal stress on the bladder, improve preventive maintenance, and simplify access to the main fulcrum bearings. The air bladder actuator is made with li... | 05/12/2009 |
| 7325567 | Pneumatic retarder acutator valve The present invention pertains to an electro-pneumatic retarder control (EPRC) valve for a pneumatic retarder that controls the speed of railroad cars in a marshaling yard. The EPRC valve has a housing that generally encloses and protects its various components. The... | 02/05/2008 |
| 7306077 | Fail-safe, weight-responsive skate retarder The present invention relates to a fail-safe skate retarder that applies a braking force proportional to the weight of a rail car entering the retarder. Each segment of the retarder includes a lever mechanism with a pair of levers rotatably joined under the running ... | 12/11/2007 |
| 7278632 | Gas spring A gas spring for a pressing tool. A cylindrical chamber is divided by a piston into a first space and a second space. The piston is attached to a piston rod, which is axially moveable in the cylindrical chamber. The gas spring is designed with an opposing force to c... | 10/09/2007 |
| 7140698 | Hydraulic control and operation system for a railroad car retarder A hydraulic control and operating system is provided for a railroad car retarder to control the movement of railroad cars in railroad classification yard. The system utilizes a double-acting hydraulic cylinder to operate the retarder mechanism and includes a hydraul... | 11/28/2006 |
| 7140302 | Releasable skate retarder for railway cars The present invention provides a releasable skate retarder for railway cars. The retarder includes a plurality of spring packs including springs which bias shoe carrying beams toward running rails, trapping wheels of a railway car entering the retarder between the s... | 11/28/2006 |
| 6829998 | Releasable skate retarder for railway cars The present invention provides a releasable skate retarder for railway cars. The retarder includes a plurality of spring packs including springs which bias shoe carrying beams toward running rails, trapping wheels of a railway car entering the retarder between the s... | 12/14/2004 |
| 6637554 | Rail brake element A rail brake element, in particular in connection with rail brake buffer blocks, comprising a pair of clamping plates C-shaped in cross section and having upper and lower leg portions, the clamping plates engaging a rail head on opposite sides, at least o... | 10/28/2003 |
| 6520298 | Rail brake, especially a holding brake A railroad track brake in which a piston track brake is shifted out of an active state into an inactive state by a track-brake lowering device with a length of structural section extending along the piston track brake and having drag bars attached thereto... | 02/18/2003 |
| 6220400 | Railway car retarder A low-profile railway car retarder system comprising a fulcrum pin, an upper and a lower lever, and two braking assemblies, is disclosed. The levers are located beneath a horizontal plan drawn from the top of the rail, thereby preventing inadvertent conta... | 04/24/2001 |
| 6199671 | Shock absorber A piston-type rail retarder includes a shock absorber having a cylinder defining a cavity between a pair of end walls. A piston rod extends axially through one of the end walls, and a piston is mounted on the piston rod between the end walls so as to divi... | 03/13/2001 |
| 6135029 | Linear motion brake A brake (10) includes a first friction element (30) secured to the sliding plate (16) of a linear motor (12) and a second friction element (36) secured to the base plate (14) of the linear motor (12), with the friction elements (30, 36) located outside of... | 10/24/2000 |
| 5927444 | Brake for a track-operated vehicle A brake for a track-operated vehicle employing the use of friction between at least one brake pad to be mounted on the vehicle and at least one frictional strip for attached to a lateral side of the track. The brake pad is to be attached to the vehicle by... | 07/27/1999 |
| 5865122 | Apparatus for attaching buffer stop to railroad track A shoe or clamp assembly for securing a buffer stop or bumping post to railroad track with a predetermined magnitude of retardation against sliding movement of the buffer stop when the same is engaged by a moving railcar to be stopped. The shoe assembly w... | 02/02/1999 |
| 5794533 | Speed control apparatus for waterway traveling vehicle A speed control apparatus for a waterway traveling vehicle which can guide the vehicle when it is traveling along the waterway, while applying a damping force to slow or stop the vehicle. A turning frame is provided in the waterway and is guided by a guid... | 08/18/1998 |
| 5730260 | Shock absorber A shock absorber comprises a cylinder defining a cavity between a pair of end walls. A piston rod extends axially through one of the end walls, and a piston is mounted on the piston rod between the end walls so as to divide the cavity into first and secon... | 03/24/1998 |
| 5676337 | Railway car retarder system A railway car retarder mechanism that employs linear electromagnetic induction to precisely accelerate or decelerate a railcar. The retarder mechanism includes a plurality of linear induction stators having a spaced plurality of primary inductors, a contr... | 10/14/1997 |
| 5636575 | Conveyor speed retarder A retarder apparatus controls the speed of a free, load-carrying conveyor as it moves in a predetermined direction along a path of travel defined by the track in which the conveyor runs. Paddle members are spaced at regular intervals along an endless mova... | 06/10/1997 |
| 5584249 | Shackle snubber for carcass carriers A control device for trolley shackles used to carry animal carcasses or parts thereof on a track for weighing and disposal. The control comprises a snubber device including extending teeth adapted so that each tooth can catch a shackle. Speed control of t... | 12/17/1996 |
| 5575218 | Track brake apparatus with sliding shoes and wear plates for preventing excessive movement of the shoes in the direction of vehicle movement A brake apparatus that is designed to brake a drag race vehicle that is movable within a track of an amusement ride. The braking apparatus includes a pair of braking units that each include movable portions that are movable toward each other so as to clam... | 11/19/1996 |
| 5570639 | Anti-runaway apparatus and method for a power-and-free conveyor system Apparatus for preventing runaway of trolleys in a power-and-free conveyor system that includes a friction bar that extends lengthwise of the free conveyor track on a side of the track remote from the power conveyor for motion lengthwise of the track at an... | 11/05/1996 |
| 5553986 | Indirect lock and lock release mechanism An indirect locking and lock release mechanism is provided that permits remote actuation of the lock release function and automatic reset of the locking function in a chamber. Linear actuation of a push rod from a transfer platform causes linear actuation... | 09/10/1996 |
| 5431521 | Indirect lock and lock release mechanism An indirect locking and lock release mechanism is provided that permits remote actuation of the lock release function and automatic reset of the locking function in a chamber. Components on a transfer carrier permit remote actuation of locking components ... | 07/11/1995 |
| 5388525 | Railway car retarder An improved railway car retarder, fitted with fluid power cylinders, such as hydraulic or pneumatic cylinders. The cylinders function to temporarily release the force of retarder friction rails on train car wheels. The retardation function is still carrie... | 02/14/1995 |
| 5387063 | Indirect lock and lock release mechanism An indirect locking and lock release mechanism is provided that permits remote actuation of the lock release function and automatic reset of the locking function in a chamber. Linear actuation of a push rod from a transfer platform causes linear actuation... | 02/07/1995 |
| 5211266 | Rail skate An improved rail skate intended for mounting on the top of a rail, including an upwardly inclined ramp portion and an entry or toe portion whereby a wheel of an approaching railcar will roll up on top of the entry or toe portion and engage the ramp thereb... | 05/18/1993 |
| 5209165 | Buffer stop In a friction buffer stop, each side wall of the buffer structure has at its lowermost edge mutually spaced slots extending parallel to the adjacent rail, each slot being directly opposite to and of the same length as a slot in the other side wall. Pairs ... | 05/11/1993 |
| 5121695 | Overhead cableway An overhead cableway is disclosed, in particular a chair lift, with a cable revolving between stations and with transport devices having a traveling gear and connected with the cable via removable clamps. Travel segments are provided at every station whic... | 06/16/1992 |
| 5092248 | Railway wagon retarder The retarder is installed adjacent a railway track for reducing the speed of a wagon rolling along the track and additionally has the capability of boosting the speed of a wagon. The retarder includes a hydraulic unit having a portion adapted to be deflec... | 03/03/1992 |
| 5029675 | Method and device for speed control of railway transport facilities A method for speed control of railway transport facilities and a device to accomplish the method are used for deceleration and acceleration of transport vehicles in shunting yards. In the process of speed control a pressure element is introduced into an a... | 07/09/1991 |
| 4901648 | Trolley braking method and apparatus for use with conveyors A weight bearing trolley moves along a track having flanges between which a guide wheel of said trolley is positioned. The movement of the trolley is monitored to determine when braking is desired and, when desired, pressure is applied to said guide wheel... | 02/20/1990 |
| 4867279 | Low-profile railway car retarder A low-profile railway car retarder having a pair of braking bars disposed parallel and on opposite sides of a track rail and having an upper and lower pivotal lever carrying a respective one of the pairs of braking bars. A pneumatic motor pivotally connec... | 09/19/1989 |
| 4739863 | Vat wheel lock A locking assembly for vat wheels mounted in a track includes an air cylinder actuator having a reciprocating piston rod which drives a pivotable rocker assembly. The rocker assembly includes a pair of wheel braces which, in a locking position, cross the ... | 04/26/1988 |
| 4721189 | Retarders suitable for wagon speed control A retarder, suitable when mounted in association with a rail of a railway track for reducing the speed of a wagon rolling along the track, includes an hydraulic unit which comprises a hollow member, a piston slidably housed in that member, and a piston ro... | 01/26/1988 |
| 4650038 | Retarders suitable for wagon speed control A retarder, suitable for mounting with respect to a rail of a railway track for reducing the speed of a wagon rolling along the track, includes an hydraulic unit a portion of which, for retardation of the wagon, is disposed in the path of a wheel of the w... | 03/17/1987 |
| 4568305 | Toy railroad vehicle brake system A toy train set includes a toy train car operative upon a two rail trackway. The trackway includes a braking system for reducing the toy train speed at selected places along the trackway and a track intersection having no moving parts which permits a chil... | 02/04/1986 |
| 4546295 | Electric actuators The present invention provides an electric actuator having an output member movable from a first variable position to a second variable position; an electric motor operable to control a spring system to exert an output force on the output member when in i... | 10/08/1985 |
| 4535872 | Retarders suitable for wagon speed control and having means for holding them in their operative condition A retarder, suitable for reducing the speed of a wagon rolling along a railway track, includes a retainer, which is adapted to be secured upon or adjacent a rail of the track, and an hydraulic unit which is fitted in the retainer. A portion of the unit no... | 08/20/1985 |
