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. 13, 2001
Filed:
Mar. 04, 1999
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01C 2/108 ;
U.S. Cl.
CPC ...
F01C 2/108 ;
Abstract
A helical blade type compressor comprising a case, a cylindrical cylinder provided in the case, a roller disposed in the cylinder, and helical blades of uneven pitches for dividing a compression chamber so that the volume may be gradually smaller in the axial direction between the cylinder and roller, by revolving the cylinder and roller to move the compression chamber in the volume decreasing direction, thereby compressing the air, wherein at least one seal member is provided in the roller for separating into pressure in the case and the pressure in the compression chamber.