Coating processes – Solid particles or fibers applied – Interior or hollow article coating
Patent
1976-07-12
1977-10-18
Hoag, Willard E.
Coating processes
Solid particles or fibers applied
Interior or hollow article coating
264121, 264126, 264269, 264309, 264310, 427184, 427195, 427234, 427239, 427261, 427375, B29F 500
Patent
active
040546888
ABSTRACT:
Improved process for applying locking patches of resilient resin to internally threaded articles such as nuts having openings at both ends of the threaded portions in which process there is used apparatus including, a support and treating member, preferably a rotatable, circular table with edge notches complementary to a portion of the exterior of a threaded article to be treated, which receives a succession of threaded articles heated to a temperature above the melting point of the resin to be applied and moves the articles along a path for treatment with the axes of the threaded articles in an up and down position and with the openings at the upper and lower ends of the threaded portions substantially uncovered, conduits on the support and treating member are associated with each threaded article to direct particles of heat fusible resin upwardly through the opening at the lower end of the article against a portion of the threaded surface of the article to form a first deposit of resin on an area of the threaded surface during movement along a first portion of the treatment path and a turning device at an intermediate location on the treatment path turns each threaded article, as it reaches that location, a predetermined angle so that the conduit associated with the article directs resin against a further area of the threaded surface to form a second deposit of resin during movement along a further portion of the treatment path.
REFERENCES:
patent: 3324824 (1967-06-01), Palmer et al.
patent: 3557750 (1971-01-01), Gallagher
patent: 3592676 (1971-07-01), From et al.
patent: 3720533 (1973-03-01), Gallagher
Duffy Richard J.
Rodden Philip J.
Hoag Willard E.
Megley Richard B.
Pollard Benjamin C.
USM Corporation
White Vincent A.
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