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:
May. 19, 1981
Filed:
Jul. 23, 1976
Applicant:
Inventors:
Wolfram Breuer, Leverkusen, DE;
Klaus Siemer, Leverkusen, DE;
Assignee:
Farbenfabriken Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ; H02P / ;
U.S. Cl.
CPC ...
417 32 ; 318471 ; 318334 ;
Abstract
This invention relates to a method of and means for conveying and measuring gases for gas analysis operations by means of a pump, which conveys the gas with constant volume per working cycle. The means for this purpose, as used in connection with gas analysis instruments, consists of a cyclically operating gas delivery pump with an electric motor drive which is connected to a frequency transmitter for pre-setting the speed of rotation.