Method of repairing bolts with replaceable threads

Details Method of repairing bolts with replaceable threads Method of repairing bolts with replaceable threads

1998-06-26

2000-08-15

Echols, P. W.

Metal working

Method of mechanical manufacture

Repairing

2952502, 2952511, B23P 600

Patent

active

061016993

ABSTRACT:
A screw with replaceable threads is particularly useful to releasably join the spiders of rotational molding machines. The screw comprises a master bolt that passes through a first spider, and a tip that is removably assembled to the master bolt. The tip is threaded to selectively engage and disengage a receiver on the second spider. When the tip is assembled to the master bolt, the screw is captured in the first spider. When the tip has worn through use, it can be replaced without disturbing the master bolt. Similarly, when the tip seizes to the receiver, the tip and receiver are replaceable as a unit without disturbing the master bolt.

REFERENCES:
patent: 3119298 (1964-01-01), Brown
patent: 4022099 (1977-05-01), Ballantyne
patent: 4126338 (1978-11-01), Coel et al.
patent: 4238537 (1980-12-01), Kerr
patent: 4931008 (1990-06-01), Morrison
patent: 5118236 (1992-06-01), Rodriguez, II et al.

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