Motors: expansible chamber type – Cutoff after single complete cycle
Patent
1985-05-06
1988-01-05
Hershkovitz, Abraham
Motors: expansible chamber type
Cutoff after single complete cycle
91417A, 227139, F15B 1115
Patent
active
047168137
ABSTRACT:
A pneumatically operated fastener driving device having an adjustable staple leg length clinching mechanism and an improved actuating mechanism including a drive piston controlling valve member, a trigger member, an actuating member mounted on the trigger member and a control member. A first interengaging connection is provided between the control member and the actuating member for enabling the control member (1) when in a control postion to control the relative movement of the actuating member with respect to the trigger member so that the actuating member will be moved with the trigger member through a valve actuating movement in response to the movement of the trigger from a normal position into a cocked position and (2) when moved into a release position to control the relative movement of the actuating member with respect to the trigger member so that the actuating member will be enabled to move through a valve releasing movement following its valve actuating movement, while the trigger member is maintained in its cocked position. A second interengaging connection is provided the actuating member and the valve member for enabling the valve member (1) to move from a normal position into a piston firing position in response to the valve actuating movement of the actuating member and (2) from its firing position into its normal position in response to the valve releasing movement of the actuating member. A cam is provided for moving the control member from its control position to its release position in response to the movement of the drive piston and the fastener driving element through the end portion of its drive stroke.
REFERENCES:
patent: 2703402 (1955-03-01), Forrester
patent: 2897502 (1959-08-01), Schafroth
patent: 2989948 (1961-06-01), Forrester
patent: 3191841 (1965-06-01), Schafroth
patent: 3279673 (1966-10-01), Schafroth et al.
patent: 3301139 (1967-01-01), Garfinkel
patent: 3335856 (1967-08-01), Libby
patent: 3685396 (1972-08-01), Obergfell
patent: 4030655 (1977-06-01), Rothfusss
Hershkovitz Abraham
Stanley-Bostitch Inc.
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