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.

Date of Patent:
Mar. 24, 1998

Filed:

Mar. 15, 1996
Applicant:
Inventors:

Mikael Hansson, Orsa, SE;

Mats Norin, Alvdalen, SE;

Goran Paulsson, Mora, SE;

Assignee:

Pressmaster Tool AB, Alvdalen, SE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21J / ; B21D / ;
U.S. Cl.
CPC ...
7245316 ; 7240914 ;
Abstract

A tool head comprising a fixed jaw (20), a movable jaw (21) journalled for movement towards and away from the fixed jaw, a pressure plunger-cylinder means (12-18) for driving the movable jaw, an electric control circuit (36-38, 40, 41, 51) for operating the plunger-cylinder means, and connecting means (52-55, 57) for connecting the plunger-cylinder means (12-18) and the control circuit to an electrical power and pressure-medium supply source separate from the tool head through the medium of a flexible conduit. The movable jaw (21) is guided for movement relative to the plunger-cylinder means (12-18) and is spring-biassed (22) from a retracted position in which it supports against the plunger-cylinder means towards an outwardly projected position in which it is located adjacent the fixed jaw (20). The movable jaw (21) is coordinated with means (25-27, 29, 31, 32, 35) which can be actuated manually outside the region of the jaws such as to move the movable jaw (21) away from the fixed jaw (20) against the action of the biassing spring (22).


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