Pressurized injector

Details Pressurized injector Pressurized injector

2000-05-09

2001-06-12

Scherbel, David A. (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Including supply holder for material

Follower in holder

C222S389000, C169S009000, C169S033000

Reexamination Certificate

active

06244523

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates generally to an injector, and more particularly to a pressurized injector which is used in a construction site to inject a filling material.
BACKGROUND OF THE INVENTION
As shown in
FIG. 1
, a pressurized injector of the prior art comprises a barrel
1
A and a pressurized container
1
B which is detachably fastened with a starting end “B” of the barrel
1
A. The barrel
1
A is provided with an injecting end “A” opposite to the starting end “B”. The barrel
1
A is provided therein with a piston
4
A. The barrel
1
A contains a construction filling material, which is forced out of the injecting and “A” by the piston
4
A which is acted on by the pressure of gas contained in the pressurized container
1
B.
Such a prior art injector as described above is defective in design in that it is vulnerable to gas leak in the event that the pressurized container
1
B is not securely engaged with the starting end “B” of the barrel
1
A in the wake of the adding of a filling material. If the filling material is added to the barrel
1
A from the injecting end “A” of the barrel
1
A, the piston
4
A is vulnerable to being forced out of the starting end “B” of the barrel
1
A by the excess pressure of the filling material.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a pressurized injector which is free from the drawbacks of the prior art injector described above.
The features and the advantages of the present invention will be readily understood upon a thoughtful deliberation of the following detailed description of a preferred embodiment of the present invention.


REFERENCES:
patent: 1104079 (1914-07-01), Snyder
patent: 1302678 (1919-05-01), Lauterbach
patent: 1302679 (1919-05-01), Lauterbach et al.
patent: 2925942 (1960-02-01), Schmidt et al.
patent: 3405845 (1968-10-01), Cook et al.
patent: 4385714 (1983-05-01), Szabo et al.
patent: 5409084 (1995-04-01), Graf
patent: 5518145 (1996-05-01), Chen

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