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. 04, 1979
Filed:
May. 03, 1978
Applicant:
Inventor:
Ernest W Schumacher, De Soto, TX (US);
Assignee:
Virginia Chemicals Inc., Portsmouth, VA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210136 ; 210266 ; 210D / ;
Abstract
A filter-drier that provides two-way or bi-directional flow for a heat pump or other refrigeration system is described. This filter-drier contains a spring-loaded check valve at each end of an adsorption space containing an adsorbent such as activated alumina, molecular sieve silica gel or combination thereof. Each check valve is surrounded by a filter pad and a flexible diaphragm. Reverse-discharge and separate-discharge embodiments are particularly described.