Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Externally threaded fastener element – e.g. – bolt – screw – etc. – Separate head element
Patent
1992-07-23
1993-06-29
Wilson, Neill R.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Externally threaded fastener element, e.g., bolt, screw, etc.
Separate head element
411 84, 411104, 42521, F16B 2300, F16B 2700
Patent
active
052228517
ABSTRACT:
A bolt head assembly comprises a circular bottom and a longitudinal straight walled section extending upwardly therefrom. Only the longitudinal section is threaded. A separate shank is threaded into an internal threaded portion of the bolt head. A washer and nut at the end of the bolt are used to secure a commode. In the event that the commode has to be replaced or any other exigency exists the shank can be easily removed from the head despite binding of the nut and washer to the bolt because of corrosion. Application of torque to the nut would cause the threaded shank to separate from the internal threaded portion of the head and be removed along with the nut and washer.
REFERENCES:
patent: 789553 (1905-05-01), Lang
patent: 1507488 (1924-09-01), Kraemer
patent: 4227722 (1980-10-01), Barber
patent: 4784554 (1988-11-01), Break
patent: 4850063 (1989-07-01), Abbate
patent: 4907923 (1990-03-01), McGrath, Jr.
Halper Robert
Wilson Neill R.
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