Information
-
Patent Grant
-
RE38093
-
Patent Number
RE38,093
-
Date Filed
Wednesday, April 4, 200124 years ago
-
Date Issued
Tuesday, April 29, 200322 years ago
-
Inventors
-
Original Assignees
-
Examiners
Agents
- Kamrath; Alan
- Rider, Bennett, Egan & Arundel, LLP
-
-
US Classifications
Field of Search
US
- 030 169
- 030 340
- 030 342
- 030 343
- 030 344
- 016 1101
- 016 1111
- 016 421
- 016 436
- 016 DIG 19
- 015 1431
- 015 23601
- 015 DIG 10
- 081 489
- 081 492
-
International Classifications
-
Abstract
A mason's hand tool includes a blade, a handle, and a head cap. The blade is fastened with one end of the handle. The handle has a head end opposite to the one end of the handle. The head cap is fastened with the hand end. The handle and the head cap are made integrally of a plastic material by injection molding. The head cap has a plurality of protruding which are anchored in the head end of the handle.
Description
FIELD OF THE INVENTION
The present invention relates generally to a hand tool, and more particularly to a mason's hand tool.
BACKGROUND OF THE INVENTION
As shown in
FIGS. 1 and 2
, a mason's hand tool of the prior art comprises a blade
10
′ , a handle
20
′ , and a head cap
25
30
′ . The handle
20
′ is made of a plastic material and is devoid of a skidproof surface enabling the hand of a person to get a firm grip on the handle
20
′ . The head cap
25
30
′ is fastened with the head end of the handle
20
′ by rivet or adhesive and is therefore vulnerable to being detached from the head end of the handle
20
′ especially at the time when the head cap
25
30
′ is used by a mason to hit a nail or screw that is not completely fastened onto something.
SUMMARY OF THE INVENTION
The primary objective of the present invention is therefore to provide an improved hand tool which is free from the drawbacks of the prior art hand tool described above.
In keeping with the principle of the present invention, the foregoing objective of the present invention is attained by a hand tool comprising a blade, a handle, and a head cap. The handle is provided with a skidproof surface to enable the hand of a person to get a firm grip on the handle. The handle and the head cap are made integrally of a rigid plastic material by injection molding.
The foregoing objective, features, functions, and advantages of the present invention will be more readily understood upon a thoughtful deliberation of the following detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1
shows a perspective view of a hand tool of the prior art.
FIG. 2
shows an exploded view of the hand tool of the prior art.
FIG. 3
shows a perspective view of a hand tool of the preferred embodiment of the present invention.
FIG. 4
shows a perspective view of an embodiment of a head cap of the hand tool of the present invention.
FIG. 5
shows a perspective view of another embodiment of a head cap of the hand tool of the present invention.
FIG. 6
shows a side view, partly sectioned, of the hand grip of the present invention having the head cap in FIG.
4
.
FIG. 7
shows a side view, partly sectioned, of another partial grip of the present invention having the head cap in FIG.
5
4
.
DETAILED DESCRIPTION OF THE EMBODIMENT
As shown in
FIG. 3
, a hand tool embodied in the present invention is composed of a blade
10
, a handle
20
, and a head cap
30
.
The handle
20
is fastened at one end thereof with the blade
10
which is used in spreading cement mortar or things of that nature. The cap
30
is fastened with the head end of the handle
20
. In the preferred embodiment of the present invention, the handle
20
and the head cap
30
are made integrally of a rigid plastic material by injection molding. The handle
20
is provided on the outer surface of the one end thereof with a skidproof area
12
providing friction to enable the thumb and the index finger to hold the skidproof area
12
securely.
In order to enhance the fastening of the head cap
30
with the head end of the handle
20
, the head cap
30
may be provided with a plurality of protrusions
31
each having a retaining head
32
which is greater in diameter than the protrusions
31
, as shown in FIG.
5
and FIG.
7
. The head cap
30
is thus securely attached to the handle
20
, best shown in
FIGS. 5 and 7
. Now referring to
FIG. 4
, and
FIG. 6
, in another embodiment of the invention, the head cap
30
is provided with a plurality of threaded holes
35
and bolts
33
which are engaged with the threaded holes
35
. Each bolt
33
has a head
34
which provides a similar function the retaining head
32
of FIG.
5
. The head cap
30
is thus securely fastened with the handle
20
, thanks to the protrusions
31
or the bolts
33
which are securely anchored in the head end of the handle
20
. The head cap
30
of the present invention is not vulnerable to being separated from the head end of the handle
20
even if the head cap
30
is used to hit a nail or screw that is not completely fastened onto something.
The embodiment of the present invention described above is to be regarded in all respects as being merely illustrative and not restrictive. Accordingly, the present invention may be embodied in other specific forms without deviating from the spirit thereof. The present invention is therefore to be limited only by the scope of the following appended claims.
Claims
- 1. A hand tool comprising a blade, a handle, and a head cap, said blade being fastened with a first end of said handle, said handle having a head end opposite to said first end, said head cap being fastened with said head end; wherein said handle and said head cap are made integrally of a plastic material by injection molding; and wherein said head cap has a plurality of protrusions each having a retaining head, said protrusions being anchored in said head end of said handle.
- 2. A hand tool comprising a blade, a handle, and a head cap, said blade being fastened with a first end of said handle, said handle having a head end opposite to said first end, said head cap being fastened with said head end; wherein said head cap is provided with a plurality of threaded holes and bolts which are engaged with said threaded holes; wherein said head cap and said handle are made integrally of a plastic material by injection molding; and wherein said bolts are anchored in said head end of said handle.
- 3. The hand tool as defined in claim 1, wherein said handle is provided with a skidproof area at an outer surface of said handle to provide friction between said handle and a hand holding said handle.
- 4. The hand tool as defined in claim 2, wherein said handle is provided with a skidproof area at an outer surface of said handle to provide friction between said handle and a hand holding said handle.
- 5. A hand tool comprising, in combination: a handle having a first end and a second end; a blade attached to the first end of the handle; and a head cap fastened with the second end of the handle, the handle being made of a plastic material, the handle and the head cap being made integral by injection molding, and the head cap having at least one protrusion anchored in the second end of the handle, wherein said at least one protrusion includes a retaining head.
- 6. The hand tool as defined in claim 5, wherein the handle and the head cap are made integrally of a plastic material by injection molding.
- 7. The hand tool as defined in claim 5, wherein said handle is provided with a skidproof area at an outer surface of said handle to provide friction between said handle and a hand holding said handle.
- 8. A hand tool comprising, in combination: a handle having a first end and a second end; a blade attached to the first end of the handle; and a head cap fastened with the second end of the handle, the handle being made of a plastic material, the handle and the head cap being made integral by injection molding, and the head cap having at least one protrusion anchored in the second end of the handle, wherein said at least one protrusion comprises at least one bolt securely attached to the head cap, and said at least one bolt being anchored in the second end of the handle.
- 9. The hand tool as defined in claim 8, wherein the head cap includes at least one threaded hole for engaging with said at least one bolt.
- 10. The hand tool as defined in claim 8, wherein the handle and the head cap are made integrally of a plastic material by injection molding.
- 11. The hand tool as defined in claim 8, wherein said handle is provided with a skidproof area at an outer surface of said handle to provide friction between said handle and a hand holding said handle.
US Referenced Citations (24)
Foreign Referenced Citations (4)
Number |
Date |
Country |
825778 |
Dec 1951 |
DE |
2935806 |
Jan 1981 |
DE |
422254 |
Jan 1935 |
GB |
WO 8602849 |
May 1986 |
WO |
Divisions (1)
|
Number |
Date |
Country |
Parent |
09/280705 |
Mar 1999 |
US |
Child |
09/825773 |
|
US |
Reissues (1)
|
Number |
Date |
Country |
Parent |
09/280705 |
Mar 1999 |
US |
Child |
09/825773 |
|
US |