Fastener apparatus

Details Fastener apparatus Fastener apparatus

1975-06-11

1977-02-01

Jones, Jr., James L.

Tools

Tool jaw

Jaw features

81 51R, B25B 702

Patent

active

040056236

ABSTRACT:
Theft-resistant fastener apparatus for attaching an object to a platform is disclosed. The apparatus employs a shoulder bolt having a hardened, smooth, non-wrenchable head and a cup-washer rotatably positioned on the bolt to partially enclose the head. Force can be applied by an installation tool (also disclosed) to hold the bolt and washer together so that a torquing moment can be applied to the apparatus to thread the bolt into the object. When the bolt is seated the force is removed the washer is free to rotate on the bolt, thwarting efforts to unscrew the bolt from the object. Hardened rotatable sheathing means for protecting any exposed portion of the shank of the bolt are also disclosed.

REFERENCES:
patent: 641191 (1900-01-01), Champion
patent: 2342479 (1944-02-01), Miles et al.
patent: 2550866 (1951-05-01), Rosan
patent: 2555197 (1951-05-01), Lasky
patent: 2584433 (1952-02-01), Diepen
patent: 2608229 (1952-08-01), Brutus
patent: 2836918 (1958-06-01), Pula et al.
patent: 3060785 (1962-10-01), Corlett et al.
patent: 3098541 (1963-07-01), Kadas
patent: 3315341 (1967-04-01), Lara
patent: 3826160 (1974-07-01), Allen et al.

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