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. 26, 1994
Filed:
Jul. 27, 1993
Shigeru Suzuki, Kariya, JP;
Nobuaki Hoshino, Kariya, JP;
Takahisa Ban, Kariya, JP;
Kunifumi Goto, Kariya, JP;
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, JP;
Abstract
An automotive air conditioning apparatus includes an input shaft connected to an engine, a pump unit disposed on the input shaft, a compressor unit disposed on the input shaft, and a separator wall disposed between the pump unit and the compressor unit and adapted to seal therebetween in the axial direction of the input shaft. The pump unit includes a first short-circuiting passage communicating the suction space and the discharge space, and the first short-circuiting passage is provided with a first control valve. The compressor unit includes a second short-circuiting passage communicating the suction area and the discharge area, and the second short-circuiting passage is provided with a second control valve. When heating, the first short-circuiting passage is closed with the first control valve, and the second short-circuiting passage is opened with the second control valve to disable the compressor unit. When cooling, the first short-circuiting passage is opened with the first control valve to disable the pump unit, and the second short-circuiting passage is closed with the second control valve.