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. 30, 1976
Filed:
Jul. 18, 1974
Applicant:
Inventor:
Hans Kristoffer Olofsson, Huddinge, SW;
Assignee:
Atlas Copco Aktiebolag, Huddinge, SW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01C / ; F04C / ;
U.S. Cl.
CPC ...
418203 ; 418164 ;
Abstract
A screw rotor machine is disclosed in which a screw thread rotor enclosing a screw cam rotor is axially balanced through having an area enclosed by a seal between the screw thread rotor and the housing which area stands in a predetermined relation to the hole area of the screw thread rotor.