Patents by Inventor Robert N. Scharpf
Robert N. Scharpf has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 9114788Abstract: A pneumatic manifold for a braking system of a railway vehicle includes a first manifold section and a second manifold section, each having an interior surface thereon and a plurality of ports and passageways extending therethrough, and a manifold joint seal for creating a sealing engagement between the first manifold section and the second manifold section. The manifold joint seal is removably mounted inside a slot provided on the surface of one or both manifold sections. The manifold joint seal includes a retainer body having an opening extending therethrough, and two sealing elements are disposed within respective channels provided on opposing surfaces of the retainer body in the axial direction of the annular opening.Type: GrantFiled: January 16, 2012Date of Patent: August 25, 2015Assignee: Wabtec Holding Corp.Inventors: Robert N. Scharpf, S. Clay Evatt
-
Patent number: 8967591Abstract: A trip cock device includes a housing, a cam dog, a handle engaging the cam dog, a piston assembly at least partially received within the housing, and a fault detection valve secured to the piston assembly. The piston assembly includes a piston and the fault detection valve is configured to open and close. The fault detection valve engages the cam dog when closed.Type: GrantFiled: February 24, 2011Date of Patent: March 3, 2015Assignee: Wabtec Holding Corp.Inventor: Robert N. Scharpf
-
Publication number: 20120217427Abstract: A trip cock device includes a housing, a cam dog, a handle engaging the cam dog, a piston assembly at least partially received within the housing, and a fault detection valve secured to the piston assembly. The piston assembly includes a piston and the fault detection valve is configured to open and close. The fault detection valve engages the cam dog when closed.Type: ApplicationFiled: February 24, 2011Publication date: August 30, 2012Applicant: WABTEC HOLDING CORP.Inventor: Robert N. Scharpf
-
Publication number: 20120192957Abstract: A pneumatic manifold for a braking system of a railway vehicle includes a first manifold section and a second manifold section, each having an interior surface thereon and a plurality of ports and passageways extending therethrough, and a manifold joint seal for creating a sealing engagement between the first manifold section and the second manifold section. The manifold joint seal is removably mounted inside a slot provided on the surface of one or both manifold sections. The manifold joint seal includes a retainer body having an opening extending therethrough, and two sealing elements are disposed within respective channels provided on opposing surfaces of the retainer body in the axial direction of the annular opening.Type: ApplicationFiled: January 16, 2012Publication date: August 2, 2012Applicant: WABTEC HOLDING CORP.Inventors: Robert N. Scharpf, S. Clay Evatt
-
Patent number: 7661770Abstract: A pneumatic emergency brake assurance module comprises a high capacity transfer valve connected in a first position to the output of the variable load relay valve and in a second position connected to a source of emergency braking air pressure. A timing reservoir is in communication with the pilot port of the high capacity transfer valve. A check valve/choke circuit provides parallel connections between a double check valve and the output of the variable load relay valve such that flow from the variable load relay valve passes through a charging choke and opposite flow to the variable load relay valves passes through a dissipation choke.Type: GrantFiled: August 16, 2006Date of Patent: February 16, 2010Assignee: Wabtec Holding Corp.Inventors: James A. Wood, Robert N. Scharpf, David E. Schweikert
-
Patent number: 7543796Abstract: A high flow calibration test point has entry, inlet, and outlet ports and a spring-biased plunger that in one position provides communication between the entry port and both the inlet and outlet ports, in another position provides communication between the entry port only with the outlet port, and in yet another position allows communication only between the inlet and outlet ports.Type: GrantFiled: July 14, 2006Date of Patent: June 9, 2009Assignee: Wabtec Holding CorporationInventors: James T. Dewberry, Robert N. Scharpf, John A. Crispin
-
Patent number: 7520574Abstract: A pneumatic emergency brake release timer comprises a high capacity transfer valve, a timing reservoir in communication with the pilot port of the high capacity transfer valve, the check valve and choke circuit providing parallel connections between the main source of pressure and the reservoir through a check valve and opposite flow through a dissipating choke.Type: GrantFiled: March 28, 2006Date of Patent: April 21, 2009Assignee: Wabtec Holding CorporationInventors: David E. Schweikert, Robert N. Scharpf, James A. Wood
-
Publication number: 20090057072Abstract: A pneumatic emergency brake assurance module comprises a high capacity transfer valve connected in a first position to the output of the variable load relay valve and in a second position connected to a source of emergency braking air pressure. A timing reservoir is in communication with the pilot port of the high capacity transfer valve. A check valve/choke circuit provides parallel connections between a double check valve and the output of the variable load relay valve such that flow from the variable load relay valve passes through a charging choke and opposite flow to the variable load relay valves passes through a dissipation choke.Type: ApplicationFiled: August 16, 2006Publication date: March 5, 2009Applicant: WABTEC HOLDING CORP.Inventors: James A. Wood, Robert N. Scharpf, David E. Schweikert
-
Publication number: 20080121291Abstract: A high flow calibration test point has entry, inlet, and outlet ports and a spring-biased plunger that in one position provides communication between the entry port and both the inlet and outlet ports, in another position provides communication between the entry port only with the outlet port, and in yet another position allows communication only between the inlet and outlet ports.Type: ApplicationFiled: July 14, 2006Publication date: May 29, 2008Applicant: Wabtec Holding CorporationInventors: James T. Dewberry, Robert N. Scharpf, John A. Crispin
-
Patent number: 7374252Abstract: A wheel slip assurance module comprises a device for disabling the wheel slip valve, a timing reservoir in communication with the disabling device, and a check valve and choke circuit providing parallel connections between the output of the wheel slip valve and the timing reservoir having a first connection path comprising a check valve and charging choke and a second connection path comprising a dissipating choke such that flow from the output of the wheel slip valve passes through the check valve and charging choke to charge the reservoir when the brake cylinders are pressurized and opposite flow passes through the dissipating choke allowing the reservoir to discharge when the brake cylinders are exhausted.Type: GrantFiled: March 16, 2006Date of Patent: May 20, 2008Assignee: Wabtec Holding CorporationInventors: David E. Schweikert, Robert N. Scharpf, James A. Wood
-
Patent number: 6847869Abstract: By calculating energy used by friction brake equipment, the amount of friction brake shoe/pad wear is monitored. As amount of energy supplied reaches a percentage of the friction brake shoe/pad energy design limit, and indication for inspection is provided. If the supplied friction energy continues to increase the brake material must be replaced. The software logic limits are tunable for custom configuration by maintainace personnel. This invention measures amount of friction effort supplied with respect to time and distance in a software controller brake system and allows the software to determine when the friction brake material must be replaced on actual data and avoids costly damage from braking with worn out shoes/pads. This invention annunciates through the software when the friction material requires inspection and replacement and provides software logic to indicate remaining material thickness.Type: GrantFiled: January 9, 2003Date of Patent: January 25, 2005Assignee: Westinghouse Air Brake Technologies CorporationInventors: James T. Dewberry, David E. Schweikert, Robert N. Scharpf
-
Publication number: 20040138791Abstract: By calculating the energy used by the friction brake equipment, the amount of friction brake shoe/pad wear can be monitored. As the amount of energy supplied reaches a percentage of the friction brake shoe/pad energy design limit, an indication for inspection is provided. If the supplied friction energy continues to increase beyond this point, the brake material must be replaced. The software logic limits are tunable for custom configuring by the transit authority and maintenance personnel. This invention measures the amount of friction effort supplied with respect to time and distance in a software controlled brake system. Furthermore, this invention allows the software to determine when the friction brake material must be replaced based on actual data, which simplifies the maintenance personnel operation procedures, maximizes brake material wear, and avoids costly damage from braking with worn out shoes/pads.Type: ApplicationFiled: January 9, 2003Publication date: July 15, 2004Applicant: WESTINGHOUSE AIR BRAKE TECHNOLOGIES CORPORATIONInventors: James T. Dewberry, David E. Schweikert, Robert N. Scharpf
-
Patent number: 6739675Abstract: A brake effort monitor for railcar braking systems includes means connected to receive a brake effort request signal and a vehicle speed signal for generating an energy requested signal. Another device is connected to receive a brake effort actual signal and a vehicle speed signal for generating an actual energy signal. There is a mechanism connected to receive the energy requested signal and add it to one of a previous energy requested signal and a predetermined value for generating an energy requested sum signal. A device is connected to receive the actual energy signal and add it to one of a previous actual energy signal and a predetermined value for generating an actual energy sum signal.Type: GrantFiled: January 10, 2003Date of Patent: May 25, 2004Assignee: Westinghouse Air Brake Technologies CorporationInventors: Robert N. Scharpf, David E. Schweikert, James T. Dewberry