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:
Jan. 11, 1983
Filed:
Jan. 07, 1981
Aisin Seiki Kabushiki Kaisha, Toyota, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Kariya, JP;
Abstract
A pneumatically operated device responsive to a signal pressure applied thereto from a source of negative pressure for controlling the atmospheric air applied to a control device and for controlling an electric signal applied to an electric control circuit. The pneumatically operated device includes a diaphragm assembly assembled within a housing to subdivide the interior of the housing into first and second chambers respectively in open communication with the negative pressure source and the atmospheric air, and valve and switch mechanisms arranged within the housing to be operated in response to movement of the diaphragm assembly caused by the pressure difference between the first and second chambers.