Metal working – Method of mechanical manufacture – Obtaining plural product pieces from unitary workpiece
Patent
1976-03-15
1977-12-13
Hoag, Willard E.
Metal working
Method of mechanical manufacture
Obtaining plural product pieces from unitary workpiece
29447, 29453, 264 1, 264138, 264159, 264271, 264294, 264342R, 264334, B29C 2700, B29F 500
Patent
active
040620999
ABSTRACT:
A shield for a radiation piping rod is formed by shrinking a length of plastic resin tubing on a rod or on a mandrel having a portion conforming to a portion of the rod to be shielded. The shrunken tubing is provided with a lengthened slit to permit stripping from the rod or mandrel to form the shield. The shield is mounted on the rod after stripping, and an air interface is formed between the rod and the shield to minimize loss of radiation caused by the shield.
REFERENCES:
patent: 1435311 (1922-11-01), Knight
patent: 1965865 (1934-07-01), Thompson
patent: 2042536 (1936-06-01), Leguillon
patent: 3396460 (1968-08-01), Wetmore
patent: 3499210 (1970-03-01), Schellstede et al.
patent: 3614415 (1971-10-01), Edelman
patent: 3641332 (1972-02-01), Reick et al.
patent: 3894731 (1975-07-01), Evans
Dentsply Research and Development Corporation
Hoag Willard E.
Pearce James W.
Schaeperlaus Roy F.
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