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:
May. 09, 1978
Filed:
Dec. 15, 1975
Laddie A DePas, Sr, Louisville, KY (US);
Other;
Abstract
A fluid operated system for controlling a brake applicable to a vehicle wheel having a flywheel, driven by an unpowered vehicle wheel, connected to the vehicle brake pedal and adapted to disconnect the flywheel from the unpowered wheel to rotate independent thereof when the brake pedal is operated. Upon vehicle deceleration, the flywheel slides forward in the direction of vehicle movement due to inertia and slidably presses against a brake pad which decelerates the flywheel at a rate proportional to vehicle deceleration. A fluid operated valve having a housing containing spaced fluid inlet, storage and outlet chambers which open onto a concave base of the housing is employed to sense the rotational speed of the flywheel. A collar, connected to the flywheel so as to rotate in unison therewith, slidably engages the concave base and contains a slot which alternately connects the inlet and storage chambers and thereafter, the storage and outlet chambers together to generate a fluid output signal in the outlet chamber which is a function of the rotational speed of the flywheel. A wheel speed senser is used to sense the rotational speed of a vehicle wheel to which the brake is applied. A fluid valve, connected to the flywheel speed senser and the wheel speed sensor, generates a brake controlling response in accordance with a difference between the speeds of the wheel and vehicle and is operatively connected to the brake to limit the difference. Additional features include a manual override assembly which insures normal brake operation upon failure of the fluid operated system, and a pendulum arrangement associated with the flywheel to eliminate errors in vehicle speed sensing caused by gravity when the vehicle travels on steep inclines.