Method of forming spark plug boots with radiation cure

Details Method of forming spark plug boots with radiation cure Method of forming spark plug boots with radiation cure

1986-11-07

1988-04-12

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

29447, 29517, 29856, 264150, 264230, 264236, 264343, 264347, 439125, 439932, B29C 3508, B29C 6514

Patent

active

047373245

ABSTRACT:
A method is shown for forming a spark plug boot having at least one internal shoulder. An outer tube is first formed of an elastomeric material having an internal bore and a selected length. An inner tube, also formed of an elastomeric material, is inserted within the bore of the outer tube. The inner tube has an external diameter selected to allow it to be slideably received within the bore of the outer tube and has a length which is less than the length of the outer tube. The inner and outer tubes thus assembled are then exposed to electromagnetic radiation for a time sufficient to bond the external diameter of the inner tube to the internal bore of the outer tube.

REFERENCES:
patent: 2080948 (1937-05-01), Mazoyer et al.
patent: 2709161 (1955-05-01), Kilbourne et al.
patent: 2763609 (1956-09-01), Lewis et al.
patent: 3396460 (1968-08-01), Wetmore
patent: 3448182 (1969-06-01), Derbyshire et al.

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