Tools – Wrench – screwdriver – or driver therefor – Having work engaging and force exerting portion inserted...
Patent
1997-06-06
1999-03-30
Scherbel, David A.
Tools
Wrench, screwdriver, or driver therefor
Having work engaging and force exerting portion inserted...
811762, 8117615, B25B 1348
Patent
active
058874968
ABSTRACT:
A wrench for soft spike assemblies. The wrench provides a wrench head and a ribbed handle. The wrench head includes a plurality of symmetrically-spaced torque members and insert grip members, the former designed to frictionally engage the individual spikes and the latter designed to engage and grasp the perimeter of the spike assembly thereby facilitating hands-free installation and removal of the spike assemblies. The handle is provided with a hexagonal insert passage fore receiving an Allen-type wrench which may be used to provide increased torque in installing or removing a soft spike assembly.
REFERENCES:
patent: 2300866 (1942-11-01), Bernstein
patent: 2448805 (1948-09-01), Ingram
patent: 2459610 (1949-05-01), Zadina
patent: 3243831 (1966-04-01), Wigley
patent: 4356852 (1982-11-01), Smith
patent: 5272943 (1993-12-01), Edwards
patent: 5400680 (1995-03-01), Spangler
Pollard Owen Craig
Ziminsky Mark J.
McDonald Shantese
Scherbel David A.
Tachner Leonard
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