Hammer with a nail digging function

Details Hammer with a nail digging function Hammer with a nail digging function

1999-10-22

2001-09-04

Watson, Robert C. (Department: 3723)

Implements or apparatus for applying pushing or pulling force

Nail extractor type

Single throw lever

Reexamination Certificate

active

06283449

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a hammer that provides a nail digging function for digging nails that cannot be extracted easily.
2. Description of the Related Art
FIG. 8
of the drawings illustrates a conventional hammer with a pair of claws
80
with a slit
81
therebetween for extracting a nail
60
from a wooden plate. However, only a nail with a head beyond the surface of the wooden plate can be extracted. As illustrated in
FIG. 9
, a nail with a head buried in the wooden plate cannot be extracted easily. Forcible extraction of the nail may damage the wooden plate. In addition, the claw
80
of the hammer is designed to extract larger nails only. The present invention is intended to provide a hammer with a digging function to solve these problems.
SUMMARY OF THE INVENTION
A hammer in accordance with the present invention comprises:
a handle;
a head attached to an end of the handle, the head including an end with a pair of claws having a nail extracting slit therebetween for extracting nails; and
at least one of the claws having a nail-digging means formed on a distal free end thereof for digging a nail.
Each claw includes a slanted inner face that defines a portion of the nail extracting digging slit, and wherein the slanted inner face guides upward movement of the nail during extraction of the nail.
The nail-digging means includes a nail receiving slit in a mediate portion thereof and defined by an arcuate, slanted surface. In a preferred embodiment of the invention, the nail-digging means includes two branches separated by the nail receiving slit. Each branch has an end face processed to form a chamfered slanted face that faces upward and outward. Each chamfered slanted face includes a lower edge, the two lower edges of the chamfered slanted faces together forming an arrow configuration, thereby forming a three-dimensional nail digging section consisting of the chamfered slanted faces, the arcuate, slanted face, and the lower edges.
Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.


REFERENCES:
patent: 960193 (1910-05-01), Peterson
patent: 2330092 (1943-09-01), Vanesse
patent: 4776568 (1988-10-01), Perel
patent: 135131 (1919-11-01), None
patent: 74511 (1949-01-01), None

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