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:
Apr. 25, 1989
Filed:
Apr. 28, 1987
Seiichi Fukuhara, Takasaki, JP;
Eiji Fukushima, Fujumi, JP;
Sanden Corporation, Gunma, JP;
Abstract
A scroll type fluid displacement apparatus is disclosed in which a pair of scrolls interfit at an angular and radial offset, each scroll including a circular end plate and a spiral element. The outer wall surface of each spiral element, which extends from an outer terminal end of the spiral element to the point of contact with the outer terminal end of the opposed spiral element at the orbital position where the sealed off fluid pockets are initially formed, is a rough unfinished surface. Accordingly, the time for manufacturing each spiral element is reduced and waste of material which is produced when the scroll surfaces are finished by turning is decreased.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile