Combinational bolt

Details Combinational bolt Combinational bolt

2005-06-30

2008-03-11

Lugo, Carlos (Department: 3679)

Joints and connections

Member ends joined by inserted section

Section threaded to member

C403S231000, C403S238000, C403S297000, C403S403000, C411S046000, C411S060100, C411S060300

Reexamination Certificate

active

07341395

ABSTRACT:
A combinational bolt which comprises a screw unit and a sleeve unit. The screw unit has a plurality of threads on a surface of a front terminal, the threads make the screw unit connect with a target object, another terminal of the screw unit forms a first concave portion. The sleeve unit, which is set inside the target object, also connects and surrounds the screw unit. A sink-proof portion is set on the surface of one terminal of the sleeve unit, the sink-proof portion makes the sleeve unit clamp onto the target object, and the outer surface of the sleeve unit has a plurality of strengthen circle units and a plurality of cut slots, and a second concave portion forms inside the sleeve unit, the first concave portion and the second concave portion clamp together.

REFERENCES:
patent: 3527486 (1970-09-01), Gamp
patent: 4059041 (1977-11-01), Hassan
patent: 4353663 (1982-10-01), Glickman
patent: 4726705 (1988-02-01), Gomes
patent: 5586364 (1996-12-01), Ferrari et al.

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