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. 12, 1980
Filed:
Aug. 22, 1977
Applicant:
Inventors:
Toshio Yama, Fujisawa, JP;
Kazuaki Shimizu, Fujisawa, JP;
Assignee:
Nissan Motor Company, Limited, Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60T / ;
U.S. Cl.
CPC ...
303 92 ;
Abstract
Locking means locks an expansion valve in a position in which the expansion valve provides communication between the master cylinder and a brake unit when hydraulic fluid pressure is not generated by a pump so that a bypass valve and a differential valve can be omitted and air can be purged without providing an air bleed device.