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. 26, 1989
Filed:
Aug. 06, 1987
Applicant:
Inventors:
Nicholas F D'Antonio, Liverpool, NY (US);
Nicholas J D'Antonio, Liverpool, NY (US);
Assignee:
Pfizer Hospital Products Group, Inc., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
604319 ; 604320 ; 604321 ; 604324 ;
Abstract
A pressure regulator including high and low pressure chambers separated by a divider having an opening, a closing member biassed to a closing position for closing the opening with a biassing force according to a desired pressure differential between the chambers, and a damping device for damping the resulting force on the closing member. There is also disclosed a fluid drainage system having a suction chamber with a suction regulator, and various arrangements of diaphragms for measuring pressure differentials. An anti-spill device for the draining system is disclosed as well.