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:
Dec. 21, 1982
Filed:
Feb. 24, 1981
Applicant:
Inventors:
Jacobus H Beun, Maassluis, NL;
Jan van Duijn, Vlaardingen, NL;
Assignee:
Internationale Octrooi Maatschappij 'Octropa' BV, Rotterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ; B67D / ;
U.S. Cl.
CPC ...
417500 ; 222181 ;
Abstract
A disposable pump of plastics material for dispensing small metered amounts of liquid from a single opening container to which it has been attached and which can be closed thereby, comprises a one piece housing and a cylindrical piston; the housing has gas inlet means for allowing gas to enter the container if any subatmospheric pressure should occur therein. A control unit for operating this pump comprises a programme for imparting a certain succession of rotative and sliding movements to the piston of said pump.