Adjustable prying bar

Details Adjustable prying bar Adjustable prying bar

2007-10-09

2007-10-09

Hail, III, Joseph J. (Department: 3723)

Implements or apparatus for applying pushing or pulling force

Nail extractor type

Single throw lever

C081S177900

Reexamination Certificate

active

11492874

ABSTRACT:
An adjustable prying bar includes a prying head having an arcuate body, a flat tipped lower end a lug at upper end wherein the lug has a circular depression and an inverse stop ring on upper portion and inner thread on lower portion, a handle rotatably engaged with the upper end of the prying head having flat front end with a hexagon hole therein engaged within the lug of the prying head, and a checking mechanism including an upper cover, a lower cover, a hexagon plate and a spring separately engaged with the lug and the hexagon hole of the handle wherein the hexagon plate has a stop ring engageable with stop ring of the lug. Thereby, the angle between the prying head and the handle enables to adjust for larger or smaller than 90 degrees.

REFERENCES:
patent: 458337 (1891-08-01), Dodge
patent: 1375751 (1921-04-01), Grannis
patent: 2189480 (1940-02-01), Tessier
patent: 2376978 (1945-05-01), Pate
patent: 2379387 (1945-06-01), Tessier
patent: 2921773 (1960-01-01), Bruce
patent: 4939961 (1990-07-01), Lee
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patent: 5871204 (1999-02-01), Spirer
patent: 5875692 (1999-03-01), Lin
patent: 6158308 (2000-12-01), Huang
patent: 6253645 (2001-07-01), Lin
patent: 6339977 (2002-01-01), Lee et al.

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