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:
Jan. 04, 1983
Filed:
Oct. 16, 1980
Applicant:
Inventors:
Alex R Peters, Worksop, GB;
Stephen O Blaydes, Worksop, GB;
Assignee:
Dosco Overseas Engineering Limited, Newark, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210234 ; 210235 ;
Abstract
The invention relates to strainers or filters, particularly such oil strainers of the type which have removable filter elements held, against spring bias in a casing. As shown in FIG. 1 the strainer comprises a casing 10 with inlet apertures 11 and outlet apertures 12. Spring biased shutters 17 and 21 are held in their open positions (as illustrated) by the filter element 13 when the closure cap 24 is screwed down. On removal of the filter element 13 the springs 18 and 22 cause shutters 17 and 21 respectively to close the inlet and outlet apertures automatically.