Method of breaking loose vulcanized hose from a rigid mandrel

Details Method of breaking loose vulcanized hose from a rigid mandrel Method of breaking loose vulcanized hose from a rigid mandrel

1982-09-16

1984-03-06

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264512, 264573, 425437, B29C 700, B29H 714

Patent

active

044353510

ABSTRACT:
A method of breaking loose a vulcanized hose from a rigid mandrel on which the hose has been vulcanized is described. A first end of the hose is clamped securely to prevent movement relative to the mandrel. The second end of the hose is clamped less securely so as to permit movement relative to the mandrel. Fluid pressure is thereafter introduced between the hose and the mandrel thereby causing the hose to increase in diameter and shorten in length, thus breaking the hose loose of its associated mandrel. The hose construction must be such that it will increase in diameter without rupture when subjected to sufficient internal pressure.

REFERENCES:
patent: 2045123 (1936-06-01), Chambers
patent: 2361026 (1944-10-01), Greene
patent: 2384055 (1945-09-01), Tritt
patent: 2568128 (1951-09-01), Morris

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