1
William K Brockelsby, Conrad M B Walker, Michael H Hryciuk, Donald P Gillis: Roadway antennae. Mark IV Transportation Products Corporation, Francis J Lidd, March 9, 1993: US05192954 (53 worldwide citation)

Antennas designed for use in producing effective electromagnetic capture zones for transponders mounted on moving vehicles. The antenna systems disclosed are principally designed to be mounted at or near the surface of a roadway carrying the vehicle whose transponder is to be interrogated. A princip ...


2
Marc Zweili: Door drive equipment for mass transit vehicle. Mark IV Transportation Products Corporation, Francis J Lidd, January 16, 1996: US05483769 (33 worldwide citation)

A power door operator for vehicles requiring uninterrupted car surfaces in a door area and minimal use of car interior space, particularly in the closed position. The equipment provided utilizes a rotary motor drive and distributed gear system for moving opposing door panels away from an opening in ...


3
Redreddy S Reddy: Power door drive and door support having motor operated locks. Mark IV Transportation Products Corporation, Francis J Lidd, August 30, 1994: US05341598 (25 worldwide citation)

Rotary locks used on transit vehicle doors when opened and closed by a rotating helical door drive member. In a preferred embodiment, a first lock utilizes a negative thread portion of the helical drive. A second lock utilizes a rotating lock pawl and stop. The drive and lock can be used to operate ...


4
Robert G Bayard, Anthony J Walsh, Roger J Weseloh: Pneumatic door operator having pneumatic actuator and lock. Mark IV Transportation Products Corporation, Francis J Lidd, September 22, 1992: US05148631 (22 worldwide citation)

A power door operator for transit vehicles utilizing a rodless pneumatic cylinder as a prime mover in opening and closing doors in the sidewall of a transit vehicles. Door movement having a controlled, predetermined door edge force is achieved through mechanical coupling an external piston of the ro ...


5
Robert T Brady, Dean C Townsend, George A Weller, Joseph H Werling: Method and apparatus for low NOX combustion of gaseous fuels. Mark IV Transportation Products Corporation, Francis J Lidd, November 9, 1993: US05259342 (17 worldwide citation)

A method and apparatus for low NOX combustion of natural gas in a compact steam boiler having output steam delivery controlled by predetermined outlet steam pressure. The compact boiler employs a small high heat release combustor discharging into a forced draft convective heat exchange section. In o ...


6
Robert T Brady, Dean C Townsend, George A Weller, Joseph H Werling: Method and apparatus for low NOX combustion of gaseous fuels. Mark IV Transportation Products Corporation, Francis J Lidd, July 18, 1995: US05433174 (11 worldwide citation)

A method and apparatus for low NOX combustion of natural gas in a compact steam boiler having output steam delivery controlled by predetermined outlet steam pressure. The compact boiler employs a small high heat release combustor discharging into a forced draft convective heat exchange section. In o ...


7
George W Dailey: Resilient edges for power operated doors. Mark IV Transportation Products Corporation, Francis J Lidd, July 18, 1995: US05433031 (8 worldwide citation)

A pair of flexible interlocking edges for power operated doors primarily used on mass transit vehicles such as subway cars. If door closing is prevented, edge design allows withdrawal of obstructions, including deformable objects caught in the interstices of mating edges.


8
Robert T Brady, Joseph H Werling: Compact boiler having low NOX emissions. Mark IV Transportation Products Corporation, Francis J Lidd, August 2, 1994: US05333574 (8 worldwide citation)

Method and apparatus for reducing the NOX levels in stack emissions of compact boilers and fluid heaters through selective injection of exhaust flue gases into the combustion process. Flue gas injection into the primary and secondary air of the burner along with flue gas injection directly into the ...


9
Robert T Brady, Joseph H Werling: Compact boiler having low NO.sub.x emissions. Mark IV Transportation Products Corporation, Francis J Lidd, December 5, 1995: US05471957 (4 worldwide citation)

Method and apparatus for reducing the NOX levels in stack emissions of compact boilers and fluid heaters through selective injection of exhaust flue gases into the combustion process. Flue gas injection into the primary and secondary air of the burner along with flue gas injection directly into the ...


10
Steven J Heiress: Pressure wave switch having improved contact structure and pressure equilization. Mark IV Transportation Products Corporation, Francis J Lidd, July 14, 1992: US05130503 (3 worldwide citation)

An improved pressure switch of the pulse or pressure wave sensitive type includes a switch housing with an internal diaphragm chamber. A relief vent with a fixed orifice disk is provided in the diaphragm chamber. A diaphragm is mounted in the diaphragm chamber which includes an electrical contact mo ...