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:
Apr. 09, 1991
Filed:
Jul. 25, 1989
Applicant:
Inventors:
Edward D Marlowe, Collinsville, CT (US);
Christian P Marlowe, Nederland, CO (US);
Assignee:
CDF, Inc., Collinsville, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B / ;
U.S. Cl.
CPC ...
340611 ; 340605 ;
Abstract
A restricted flow alert for use in the access arm of the main clean-out plug location in a commercial or residential sewage system includes a diaphragm which moves in response to the presence of to close a switch and actuate an alarm. A pneumatic time delay prevents the alarm from being actuated in response to transient flow conditions in the sewer line and allows operation of the alarm at any physical orientation relative to the axis of the body of the restricted flow alert.