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:
Nov. 02, 1982
Filed:
Nov. 27, 1979
Hirokatu Kousokabe, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A fixed scroll and an orbiting scroll each having an end plate and a wrap perpendicular to the end plate and having a mirror-like surface at the forward end are brought into intimate contact with each other such that the mirror-like surface of the wrap and the end plate of one scroll member are brought into sliding contact with the end plate and the mirror-like surface of the wrap of the other scroll member, respectively, to define fluid pockets between the two scroll members. The orbiting scroll is driven by a motor to move in orbiting movement relative to the fixed scroll to compress the fluid in the fluid pockets by gradually reducing the volume of the fluid pockets. A portion of the fluid in the fluid pockets is introduced into a hermetic container for the apparatus through communication ducts each formed on one side of the wrap of the orbiting scroll to increase the internal pressure of the hermetic container, to thereby force the orbiting scroll against the fixed scroll by the increased internal pressure of the hermetic container to provide airtight seal to the fixed and orbiting scrolls.