The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 1994
Filed:
Nov. 03, 1993
Louis P Rossigno, Granger, IN (US);
Wayne A Hewitt, LaPorte, IN (US);
AlliedSignal Inc., Morristown, NJ (US);
Abstract
A servomotor having a control valve independently by a manual input applied to an operator pedal assembly to effect a brake application or a traction control force derived from a signal developed by a controller to selectively apply brake force to synchronize rotational spin of the wheels of a vehicle. An input rod connected to the control valve has a housing attached thereto with a traction control chamber therein. A sleeve which surrounds the input rod has a first flange that engages a shoulder on the input rod and a second flange that is connected to a diaphragm retained in the traction control chamber. A return spring acts on the first flange to urge the second flange and diaphragm against a stop in the housing. In response to an input signal the controller allows vacuum to be communicated to the traction control chamber to create a traction control pressure differential. The traction control pressure differential acts on the diaphragm to develop a force which is applied to the second flange to compress the return and permit a pressure differential to move the control valve and permit environmental air to create an operational pressure differential to develop a traction control output force. The traction control output force pressurized fluid in the master cylinder which is selectively applied to the wheel brakes to synchronize the rotational spin of the wheels.