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. 17, 1981
Filed:
Aug. 16, 1978
Applicant:
Inventors:
Johann Rothen, Nordstemmen, DE;
Gunther Singbartl, Hanover, DE;
Assignee:
WABCO Westinghouse GmbH, Hanover, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ;
U.S. Cl.
CPC ...
303 91 ; 328167 ;
Abstract
A controllable filter circuit for removing noise from the useful picked up speed sensing signal in an anti-skid vehicular braking system. The controllable filter circuit includes a pickup device, a frequency dependent low-pass filter, a sine-wave to rectangular-wave converter and threshold circuit, a frequency to voltage converter and a switching circuit for actuating the low-pass filter for dampening and blocking troublesome noise signals from the speed signals prior to feeding them to logic, amplifying and output devices.