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. 30, 1991
Filed:
Jul. 19, 1990
Keith Denham, Welwyn, GB;
Aiden R Dear, Stotfold, Nr. Hitchin, GB;
Avdel Systems Limited, Welwyn Garden City, GB;
Abstract
Repetition pull-through blind riveting apparatus (10), of the type comprising a reusable and reloadable mandrel with an enlarged head which is pulled through each tubular rivet in turn to install the rivet is provided with a safety device (141) for counting the total number of times the mandrel has been pulled. The apparatus includes pneumatically-operated mandrel pulling device, and a counter (132) counts the number of times the pressure of the air powering the pulling device reaches a pressure slightly below that required to pull the mandrel head through a rivet. The counter (132) is arranged to actuate, when a safe limit number of pulls has been counted, both a shut-off valve (137) to shut-off the supply of pressure air to the mandrel pulling device, and a visual indicator (135). The visual indicator (135) may be actuated at a warning count number rather lower than the safe limit number. The counter (132) can be reset to zero only by use of a separate key (142), when a new mandrel is installed in the rivet placing apparatus.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile