Metal deforming – By use of non-deforming work-gripping clamp and relatively... – Clamp structure constitutes sole initial metal-deforming...
Patent
1987-04-21
1988-07-05
Crane, Daniel C.
Metal deforming
By use of non-deforming work-gripping clamp and relatively...
Clamp structure constitutes sole initial metal-deforming...
72317, B21D 4100
Patent
active
047546344
ABSTRACT:
The device is composed of an inverted-U-shaped frame, a jig and a pipe fixture, and the inverted-U-frame is formed in such a way that the inverted-U-frame is formed in an inverted-U-shape and being formed with two pieces of leg portions for liftably guiding the jig, and a clamping screw shaft is provided for applying pressure to the jig disposed between the leg portions and a clasp is provided for holding the jig disposed between the leg portions on the clamping screw shaft and mount base portions are provided for mounting the pipe fixture at the lower portions of the leg portions, and the jig is formed as a pressure element formed with an annular groove for engaging the pawls of the clasp on an upper portion of its outer periphery, and for example, the pipe fixture that holds the end portion of an aluminum pipe in condition where the end portion of the pipe projects upward in a desired length is mounted at the mount base portions of the inverted-U-frame, and when the clamping screw shaft is screwed in, the pressure element descends to form a bead to the connecting end portion of the pipe, namely, the portion in the vicinity of the end of the pipe to enlarge it to form a ring-like flange integrally.
REFERENCES:
patent: 919924 (1909-04-01), McQuaide
patent: 3109479 (1963-11-01), Wolcott
patent: 3209571 (1965-10-01), Wilson
patent: 3842652 (1974-10-01), Yonezawa et al.
patent: 4535616 (1985-08-01), Eason
Crane Daniel C.
Philpitt Fred
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