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:
Mar. 02, 1976
Filed:
Feb. 25, 1974
Robert M Moore, Englewood, CO (US);
Other;
Abstract
Disclosed herein is a signal device for detecting the condition of a fluid line filter and automatically activating a signal indicating that the filter requires cleaning or replacement. The signal device may be built in or installed as an attachment in the fluid lines leading to and from a filter for removing moisture and/or contaminants from the line. The signal device comprises a piston housing containing a piston movable to signalling position in response to reduced fluid pressure adjacent one end of the piston resulting from reduced volume of fluid passing through the filter, locking means for retaining the piston in said signalling position, and signal actuating means activated by fluid pressure when the piston is in said signalling position. The signal may be visual or audible, actuated mechanically or electrically.