Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path
Patent
1982-09-29
1985-01-15
Crane, Daniel C.
Metal deforming
By relatively movable offset tool-faces
With tool motion in fixed path
7245319, 2924353, B21D 3100
Patent
active
044932057
ABSTRACT:
Pneumatically powered expansion rivet applicator tools. Each of the tools described herein comprise a rigid body adapted to be manually grasped by the user. First and second pneumatic cavities are housed within the body. Pneumatic coupling means associated with the body supply high pressure air to the first cavity. A fitting associated with the body receives the cylindrical shank of an expansion rivet to be installed by the tool. Fluid flow passageway means interconnect the first and second cavities, and an internal valve permits passage of high pressure air through the passageway between the first and second cavities. Piston means are slidably disposed within the second cavity, and, in response to pressurization of the second cavity, virtually instantaneously contacts associated firing pin means to forceably ram the expansion rivet shank, thereby installing the rivet. In the best mode a tubular handle which is coaxial with the body is moved axially with respect thereto for selectively activating the air valve means to subsequently initiate piston and thus firing pin actuation.
REFERENCES:
patent: 3032771 (1962-05-01), Bisbing
patent: 3042004 (1962-07-01), Fischer et al.
patent: 3442112 (1969-05-01), Abromavage et al.
patent: 3613431 (1971-10-01), Meyer
patent: 3908257 (1975-09-01), Briles
patent: 3933025 (1976-01-01), Briles
Carver Stephen D.
Crane Daniel C.
Jones David B.
Micro Plastics Inc.
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