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:
Feb. 17, 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 ...
418-9 ; 418 91 ; 418 97 ; 418166 ; 418201 ;
Abstract
A screw rotor machine is disclosed which comprises a screw cam rotor provided with gudgeons and a screw thread rotor enclosing the screw cam rotor. The screw cam rotor is made as single-thread-screw which is generated in relation to an inner base cylinder. The profile of the single-thread-screw is such that it in each cross section encloses both the inner base cylinder and the cylindrical extensions of the gudgeons. Furthermore the single-thread-screw comprises two parts having different lead angles.