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. 04, 2000
Filed:
Oct. 29, 1998
Applicant:
Inventors:
Mark W Briggs, Holland, MI (US);
Joseph D Wetzel, Hudsonville, MI (US);
Assignee:
Venturedyne, Ltd., Milwaukee, WI (US);
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73663 ; 73665 ;
Abstract
A vibrator has (a) a housing including a wall forming a cavity, (b) a sleeve in the cavity, and (c) a piston received in the sleeve for reciprocating movement therein. In the improvement, the cavity has a boundary surface inside the housing and the vibrator includes an impact block interposed between the boundary surface and the sleeve. Such impact block is positionally retained in the cavity by the boundary surface and the sleeve.