Method of making expandable member for forming seals and applyin

Details Method of making expandable member for forming seals and applyin Method of making expandable member for forming seals and applyin

1978-11-28

1981-04-21

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

With step of making mold or mold shaping, per se

264130, 264261, 264263, 264264, 264267, 264314, B29C 102, B29C 300, B29D 300, B29H 900

Patent

active

042632374

ABSTRACT:
An expandable member is disclosed that includes a molded body of elastomeric material with a core embedded therein. At least a portion of the core is not bonded to the body. A fluid conduit is provided through which fluid can be injected between the core and the unattached portion of the body to move the core and the unattached portion apart and expand the member.

REFERENCES:
patent: 3346924 (1967-10-01), Lombard
patent: 3585828 (1971-06-01), Roper
Anon., Mod. Plastics Encyclopedia, McGraw-Hill, N. Y. (1964), pp. 167-170, relied on.

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