Cleanout cap wrench

Details Cleanout cap wrench Cleanout cap wrench

2005-09-06

2005-09-06

Thomas, David B. (Department: 3723)

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

C081S125100, C081S176100

Reexamination Certificate

active

06938523

ABSTRACT:
A wrench having at least four square voids therein which will permit manipulation of the cover or cap of a port or clean out of a sewer system, as well as permitting manipulation of other fasteners having square protrusions thereon, as is common with plumbing devices. The wrench has four generally square apertures of varying sizes, descending from a relatively large aperture to a relatively small aperture.

REFERENCES:
patent: 64662 (1867-05-01), Gold
patent: 172277 (1876-08-01), Norris
patent: 356925 (1887-02-01), Chamberlin
patent: 726782 (1903-04-01), Stone
patent: 896458 (1908-08-01), Morgan
patent: 1464132 (1923-08-01), Haggardt
patent: 1596602 (1926-08-01), Eagan et al.
patent: 5425292 (1995-06-01), Mobile
patent: 5544379 (1996-08-01), Chen
patent: D393578 (1998-04-01), Keddie

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