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| Number | Title | Issue Date |
| 5730504 | Release assuring arrangement for combined electro-pneumatic/automatic pneumatic brake An electro-pneumatic brake control system for a railroad freight car comprises application and release solenoid valves controlled by a microprocessor overlayed with the conventional car automatic pneumatic brake control system, including control for bleed... | 03/24/1998 |
| 5566793 | Railway brake shoe An improved railway brake shoe member characterized by longitudinally tapered sidewalls of the brake shoe that provide adaptive response to braking under conditions of mis-alignment between the brake shoe member and the tread of a railway car wheel by fac... | 10/22/1996 |
| 5564794 | Train brake pipe pressure exhaust control system and regulating valve therefor A brake pipe pressure control system for a railroad train including a regulating valve device under control of a microprocessor wherein the regulating valve device is housed in the existing end-of-train device and effects service and emergency reductions ... | 10/15/1996 |
| 5269595 | Empty/load changeover valve for railway car An empty/load changeover valve device for a railway car having a proportioning valve via which the car control valve supplies brake cylinder pressure. The proportioning valve comprises a balance piston having equal opposing pressure areas and a combined s... | 12/14/1993 |
| 5241819 | Tappet valve assembly for automatic railway vehicle couplers A tappet valve arrangement for a railway car coupler having a main valve for supplying air pressure from one railway car to another coupled railway car. A piston and cylinder valve for supplying air pressure to a coupler centering device when the railway ... | 09/07/1993 |
| 5224994 | Apparatus and method for liquid treatment of article surfaces An apparatus and method is provided for liquid treating, particularly with coating materials such as paint, of an article, especially an article having a plurality of internal passages. The article is simultaneously rotated on an axis of rotation of the a... | 07/06/1993 |
| 5222788 | Microprocessor based electro-pneumatic locomotive brake control system having brake assurance circuit A microprocessor based, electro-pneumatic brake control system for a locomotive including electro-pneumatic valves operated by a microprocessor for controlling the locomotive brake pressure in parallel with a pneumatic back-up control valve that includes ... | 06/29/1993 |
| 5220863 | Conical diaphragm and method of making A fabric reinforced molded conical diaphragm and method of making in which the parting line of the diaphragm mold is arranged such that the flashing and reinforcing fabric of the molded diaphragm are on the sidewall of the outer clamping bead at a locatio... | 06/22/1993 |
| 5213749 | Method of forming a rubber seal having a metallic insert A method of forming a rubber seal containing a metal insert where a transfer mold having a cavity is provided with a post and a plurality of upwardly extending arcuated bosses on the base of the cavity. A metallic insert is disposed on the bosses and a fl... | 05/25/1993 |
| 5213397 | Freight brake control valve for railway cars A piston valve assembly for a freight brake control valve device in which axial displacement of a piston member is provided relative to its slide valve in response to slide valve friction creating excessive resistance to movement of the piston assembly fr... | 05/25/1993 |
| 5207482 | Vent valve device having disabling means A railway car vent valve device having a bleed valve that is selectively operable to disable the vent valve device during a single car test procedure in which the service stability of the car control valve is checked. The bleed valve is automatically rese... | 05/04/1993 |
| 5144985 | Variable load valve for railway vehicles A variable load valve device for a railway car having an arrangement for changing the axial position of a variable area piston in order to adjust the output pressure of piston valve assembly in accordance with different load weights of the railway car. Th... | 09/08/1992 |
| 5141293 | Hydraulic isolation valve for railway vehicle An isolation valve device for a hydraulic brake system of a railway vehicle including passageways via which hydraulic pressure communication is established between a pressure controller and the brake units of each truck of a railway vehicle, and a bore to... | 08/25/1992 |
| 5131667 | Hose coupling gasket An improved hose coupling gasket in which the standard gasket retaining flange is modified to include an additional sealing bead strategically formed on the upper surface of the flange such as to engage the adjacent surface of the gasket retaining groove ... | 07/21/1992 |
| 5115927 | Strengthening mechanism for a female articulated coupling member for providing additional strength in response to loads exerted at bearing assembly connection shaft The present invention provides a strengthening mechanism for a female connection member used in a articulated coupling arrangement. Such female connection members include a first end portion configured for connection to one end of a railway car center sil... | 05/26/1992 |
| 5113694 | Modified pressure regulator valve for single car testing device A conversion kit for modifying a single car test device regulator valve, such as to provide an adjustable maximum test operating pressure in one position of the regulator valve handle, and a reduced operating test pressure in another handle position of th... | 05/19/1992 |
| 5106168 | Empty-load changeover valve for railway car An empty/load changeover valve for a railway freight car having a proportioning valve via which the car control valve supplies and releases brake cylinder pressure. The proportioning valve comprises a balance piston having equal opposing pressure areas an... | 04/21/1992 |
| 5105955 | Spherical connector apparatus in an articulated slackless-type coupler arrangement used in a railway application Provided is an articulable spherical connection for a railway coupling arrangement. The connection includes a male connection member having a spherical connection portion secured to one end of a body portion and a female connection member having a split b... | 04/21/1992 |
| 5098169 | Magnet valve safety check and fault indication integrator A magnet valve safety check and fault indication integrator including a first comparator for selecting the highest axle speed of a vehicle, a second comparator for determining whether the highest axle speed is less than a preset speed, an indicator for in... | 03/24/1992 |
| 5090780 | Binary weighted digital flow regulating system A binary weighted digital fluid flow regulating arrangement including a microprocessor responsive to a brake command controller for initiating the energization and deenergization of select ones of a plurality of parallel connected electromagnetic flow con... | 02/25/1992 |
| 5085243 | Hydraulic isolation valve for railway vehicle An isolation valve device for a hydraulic brake system of a railway vehicle including passageways via which hydraulic pressure communication is established between a pressure controller and the brake units of each truck of a railway vehicle, and diaphragm... | 02/04/1992 |
| 5076401 | Spring-applied, hydraulically released brake actuator having positive clearance slack adjuster mechanism A spring-applied, hydraulic pressure released brake actuator having a modular slack adjuster assembly in which a friction ring is arranged to limit axial movement of a nut member to which a brake shoe is connected, thereby establishing a predetermined bra... | 12/31/1991 |
| 5071198 | Emergency valve for ABD freight brake control valve device An improved freight brake emergency valve device having improved stability against undesired emergency brake applications, without loss of emergency sensitivity. Flow regulator in the form of a valve and choke combination or a choke itself is employed bet... | 12/10/1991 |
| 5069312 | Handbrake for single-cylinder truck-mounted railway car brake A handbrake system for use with a truck-mounted, single-cylinder brake rigging including truss-type brake beams, there being a single handbrake pivotal lever supported intermediate its ends by a twisted transfer link that is, in turn, fixed to the brake r... | 12/03/1991 |
| 5064251 | Electropneumatic air brake control system for railway vehicles An electromagnetic air brake control system including a module portion and an integral relay valve portion. The module portion includes a brake pipe cut-off valve. A bistable electropneumatic valve device pneumatically connected to the brake pipe cut-off ... | 11/12/1991 |
| 5046921 | Moisture-removal device for a compressed air system A filter arrangement for a moisture-removal device used in compressed air systems in which an inner filter adapted to remove water from the air is encircled by an outer filter that is adapted to remove oil from the air. A space between the inner and outer... | 09/10/1991 |
| 5031731 | Brake actuator with slack adjuster disabling mechanism A brake actuator having a service brake coupled to an emergency/parking brake through a lost-motion connection that allows the service brake to be applied independently of the emergency/parking brake includes a slack adjuster, the pawl of which is withhel... | 07/16/1991 |
| 5025734 | Locomotive equipment carriage An equipment carriage for locomotive air brake valve components including a box-like frame having a rear section separating parallel end sections. The frame is arranged to guidably receive, through an open front section, a group of one or more unitized va... | 06/25/1991 |
| 5005915 | Empty/load changeover valve for railway car A dual capacity empty/load changeover valve for a railway freight car in which a piston-operated check valve controls the supply of compressed air delivered from the auxilary reservoir to the brake cylinder via the car control valve. The check valve is co... | 04/09/1991 |
| 4993521 | Tread brake unit A tread brake unit including a spring actuated compensating mechanism for maintaining the brake unit piston stroke constant. A roller associated with the compensating mechanism is adapted to ride along an operating surface of a lever arm that rotates acco... | 02/19/1991 |
| 4978179 | Brake assurance circuit operative in response to a low brake pipe pressure A low brake pipe pressure detecting circuit for a railway train is provided in conjunction with a conventional vent valve device typically associated with the locomotive brake valve device to exhaust the train brake pipe pressure and thereby effect an eme... | 12/18/1990 |
| 4974910 | Freight brake control valve having improved quick service function A freight brake control valve device for a railway vehicle having a service piston slide valve arranged with a detent to latch the service piston in preliminary quick service position until such time as the application pressure differential acting on the ... | 12/04/1990 |
| 4974911 | Vent valve device A vent valve device having a pair of diaphragm-type piston members forming a pilot chamber therebetween. The one piston controls a vent valve via which brake pipe pressure is vented locally, while the other piston controls a pilot valve a control venting ... | 12/04/1990 |
| 4957193 | Actuating cylinder having mechanical advantage An actuating cylinder having a fluid pressure operated piston member connected by a friction member to a push rod to which a brake shoe, or the like, may be attached as the output member. A force transfer lever is arranged between the piston and push rod ... | 09/18/1990 |
| 4951516 | Force multiplication mechanism A force transfer mechanism including a force lever through which an input force is transmitted to an output member with mechanical advantage only after the output member encounters sufficient resistance to overcome a friction connection between an input m... | 08/28/1990 |
| 4951554 | Low stress diaphragm A diaphragm for a diaphragm-type piston characterized by an S-shaped or ogee-like profile approximating a theoretical model that is substantially free of distortion in a selected position of the piston assembly in which a convolution is formed in the annu... | 08/28/1990 |
| 4944564 | Brake valve device arranged for electro-pneumatic control An operators's brake valve device for a railway locomotive that is adapted to provide brake pipe recharging in a holding position of the brake valve handle in which the release of brake cylinder pressure is cut off by a release magnet valve device that, i... | 07/31/1990 |
| 4915018 | Diaphragm piston assembly A diaphragm piston assembly in which an annular ring member is provided, preferably at the outer clamping periphery of the diaphragm between the underside of the diaphragm and body, to exert a force on the diaphragm in the direction of the cover that clam... | 04/10/1990 |
| 4911615 | Hydraulic pump unloader An unloader device for controlling the output of a hydraulic pump, for example, in a constant pressure-type motor vehicle braking circuit. Delivery to hydraulic accumulators in the circuit is halted by a resilient seal defining an annulus forming part of ... | 03/27/1990 |
| 4875739 | Independent continual quick service valve device A continual type quick service valve adapted to be independently mounted on a railway car to provide local, supplemental venting of the car brake pipe pressure, as long as the brake pipe pressure continues to be reduced externally. This quick service vent... | 10/24/1989 |
