Chucks or sockets – Expanding – Fluid-pressure actuator
Patent
1998-05-28
1999-09-14
Bishop, Steven C.
Chucks or sockets
Expanding
Fluid-pressure actuator
2425711, 2425761, 279 411, 294 981, B23B 3140, B23B 3130
Patent
active
059510234
ABSTRACT:
An air chuck includes a central core having a central portion, an enlarged end flange at a first end, a sloped transition section between the central portion and the enlarged end flange and having an outer inclined surface at a first inclination angle of 20.degree., a sloped end section at the opposite end of the central portion and having an outer inclined surface at a second inclination angle of 20.degree., and an air passage connected with an external surface of the central section; a rubber air bladder mounted on the central core; a housing in surrounding relation to the central core and the bladder, and including a central section, one end engaging the end flange with the central section in radially spaced relation from the air bladder, an opposite end, and a plurality of through holes spaced along the central section; a plurality of outer and inner leaves positioned externally and internally of the housing, and being connected by connecting rods so that the leaves move radially outward in response to pressurization of the bladder; a first angled ring at the one end of the housing has a third inclination angle of 25.degree. in the same direction as the first inclination angle, so as to pinch the bladder therebetween; a second angled ring at the opposite end of the housing has a fourth inclination angle of 15.degree. in the same direction as the second inclination angle, so as to pinch the bladder therebetween.
REFERENCES:
patent: 2826445 (1958-03-01), Tidland
patent: 3029037 (1962-04-01), Williams et al.
patent: 3048345 (1962-08-01), Willard
patent: 3286987 (1966-11-01), Bridges
patent: 3741571 (1973-06-01), Prazak
patent: 4135677 (1979-01-01), Warczak
patent: 4195792 (1980-04-01), Hall
patent: 4616392 (1986-10-01), Snyder
patent: 5499780 (1996-03-01), Gensheimer
Bishop Steven C.
Goldberg Richard M.
JRC Web Accessories, Inc.
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