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:
May. 03, 1994
Filed:
Aug. 08, 1990
Applicant:
Inventors:
Eymard J Chitty, Norwalk, CT (US);
David S Rimkoski, Naugatuck, CT (US);
Assignee:
Emhart Inc., Newark, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21J / ;
U.S. Cl.
CPC ...
227-1 ; 227111 ;
Abstract
A rivet tool is mounted on a bracket which can be moved vertically up and down suitable guides. To counterbalance the system an air cylinder supports the bracket and a precision pressure regulator responds very rapidly to continuously maintain a selected pressure in the cylinder. The tool will accordingly be maintained in a perfectly counterbalanced condition continuously.