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:
Jul. 25, 1978
Filed:
May. 26, 1977
Tomoyuki Nogami, Toyota, JP;
Takaaki Ohta, Okazaki, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Abstract
An inertia-controlled valve unit comprises a differential piston slidable within a stepped bore of a housing to provide first and second fluid chambers respectively in open communication with inlet and outlet ports of the housing, the piston being exposed at the smaller end thereof in the first chamber and at the larger end thereof in the second chamber. The valve unit further comprises a tubular spool slidable within an axial bore of the piston and having one end fixedly engaged with the inner wall of the housing in the second chamber and the other end exposed in the first chamber, the spool including an axial passage permitting fluid flows between the first and second chambers, and a cut-off valve including a valve seat provided on the other end of the spool and an inertia-controlled ball located within the first chamber to co-operate with the valve seat and rolling toward the valve seat to cut-off fluid flow from the first chamber to the second chamber when the ball is subjected to a deceleration in excess of a predetermined value.