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:
Mar. 10, 1987
Filed:
Nov. 14, 1984
Aisin Seiki Kabushiki Kaisha, Aichi, JP;
Abstract
With a driving system being separated by a diaphragm into two sections, a predetermined pressure is applied to the primary side of the diaphragm using air and helium gas or the like is used on the secondary side of the diaphragm, so that the pressure on the primary side of the diaphragm is transmitted to an artificial heart or the like connected to the secondary side thereof. Independently of a control system for maintaining the output from a pressure sensor to a predetermined value at all times, a solenoid valve for directly providing a higher pressure produced by a compressor or the like at the given drive timing is provided in a pressure regulating system, thereby causing a sharp rise in drive of the diaphragm. In an operation mode for automatically exhausting air from the secondary side of the diaphragm, the higher and lower pressures are alternately applied to the secondary side with the primary side being subject to the lower pressure, thus replacing air by another gas.