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:
Jul. 14, 1987
Filed:
Dec. 20, 1985
Applicant:
Inventor:
John Stein, Spokane, WA (US);
Assignee:
Kim Hotstart Mfg. Co., Inc., Spokane, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
138 26 ; 181280 ;
Abstract
A liquid pulsation dampening device comprises a sound transmitting tube structure, including a helical fin that causes incoming pulsations within a liquid to first traverse a spiral path. Vibrations and pulsations transmitted through the liquid are transferred to the tube and are effectively cancelled during their subsequent reverse axial movement through the tube interior. The housing includes a port leading between the housing and tube. One end wall includes a port leading to the tube interior. Passages are provided at the opposite end of the device for free-flow of liquid between the space separating the housing and tube and the tube interior.