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:
Feb. 03, 1987
Filed:
Dec. 24, 1984
Melvin C Zoerb, Renton, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
A port control member (24) of a metering valve (10) is mechanically connected to a pilot operated foot pedal (38). Foot pedal (38) movement of this member (24) meters fluid pressure to a second electrically controlled metering valve (108, 110, 112). Pressure from the second metering valve (108, 110, 112) is delivered to one end of a port control member (126) of a third metering valve (126, 136, 138, 140). The third metering valve (126, 136, 138, 140) meters pressure and flow from a supply pressure to wheel brakes (50). Feedback pressure from the brakes (142) is applied to the port control member (126) in opposition to the command pressure (124). The command pressure (108, 110, 112) is fed back to act on the port control member (24) of the first stage valve (10) in opposite relation to the pilot developed pedal force.