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:
Feb. 24, 1981
Filed:
Dec. 20, 1978
Applicant:
Inventor:
Douglas J Williams, Valencia, CA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B06B / ;
U.S. Cl.
CPC ...
1161 / ; 116266 ; 116112 ;
Abstract
An automatic signaling device responsive to small pressure variation, said pressure variations being created by a restriction of fluid flow within a flow system. The pressure variation causes fluid to flow through a resonant; loading chamber, activating a longitudinal wave resonator. The generation of longitudinal waves is apparent by the production of an audible signal. The device is mounted to the flow system using attaching means designed as part of or appurtenant to the device. In some embodiments the dimensions of the respective components of the device are adjustable.