# US 7,466,041 B2 · Wireless powerless switch sensor

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- Number: US 7,466,041 B2
- Document ID: US7466041B2
- Status: Granted
- Kind: B2
- Application number: 11/817,353
- Filed: 2006-03-01
- Published: 2008-05-15
- Granted: 2008-12-16
- Earliest claimed: 2005-03-04
- Assignees: Wabtec Holding Corp.
- Inventors: Robert Urman
- Web page: https://patentgrep.com/patent/US7466041B2

## CPC

- B61D 19/02: for carriages (B61D19/003 takes precedence)
- E05F 15/00: Power-operated mechanisms for wings (motor-operated accessories in locks for completing closing or initiating opening of a wing E05B17/00)
- E05F 15/70: with automatic actuation
- E05Y 2400/854: Switches
- E05Y 2400/86: by hand
- E05Y 2900/51: for railway cars or mass transit vehicles
- H01H 9/168: {making use of an electromagnetic wave communication}
- B61D: BODY DETAILS OR KINDS OF RAILWAY VEHICLES (vehicles in general B60; adaptation of vehicles to special systems B61B; underframes B61F)
- E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- H01H: ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00)

## Abstract

A passenger door open request switch for use in a multi-passenger, mass-transit vehicle. A wireless, powerless switch sensor which includes an RFID reader, a circuit located remotely from the RFID reader that is formed by connecting an RFID antenna with a control/storage element, and a switch. The switch is connected between the antenna and the storage element in such a way as to either enable or disable the antenna. This allows the system to be configured to monitor the status of the switch.

## Claims

### Claim 1

A passenger door open request system for a multi-passenger mass transit vehicle comprising:
a door operator for controlling the opening and closing of a door mounted to a doorframe of a multi-passenger mass transit vehicle;
a door open request switch mounted on or near the door;
a controller comprising an RFID reader antenna and a logic unit, wherein the logic unit of the controller is coupled to the door operator, said RFID reader antenna repetitively transmitting and awaiting a response;
an RFID circuit formed by connecting an RFID antenna with a control/storage element and an electrical switch connected to said RFID antenna, wherein the electrical switch is coupled to the door open request switch such that when the door open request switch is closed, the RFID circuit responds to the controller to cause the door to open.