Pumps – Miscellaneous
Reexamination Certificate
1999-04-28
2001-04-24
Walberg, Teresa (Department: 3742)
Pumps
Miscellaneous
C417S467000, C137S231000
Reexamination Certificate
active
06220836
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a clamp device for a hand air pump that has a protective ring to avoid damage to a rubber sealing plug of the clamp device.
2. Description of the Related Art
FIG. 7
of the drawings illustrates a conventional clamp device attached to a hand air pump
1
for holding a valve
90
of an article (e.g., a bicycle tire) to be inflated. The clamp device includes a sleeve
82
, a rubber plug
81
mounted in the sleeve
82
, a nozzle
83
communicating an interior of the rubber plug
81
with the hand air pump
1
, and an end cap
80
that holds the tire valve
90
. In use, the sleeve
82
is rotated to be in threading engagement with the valve
90
such that the rubber plug
81
that provides a sealing effect for inflation tends to wear and thus be damaged. The present invention is intended to provide an improved clamp device to solve this problem.
SUMMARY OF THE INVENTION
It is a primary object of the present invention to provide an improved clamp device that has a protective ring mounted between the sleeve and the rubber sealing plug to protect the rubber sealing plug.
In accordance with the present invention, a clamp device is provided for a hand air pump. The clamp device comprises a sleeve including a first end securely attached to an output end of a cylinder of the hand air pump and a second end for receiving a valve of an article to be inflated, a plug mounted in the sleeve, a protective ring mounted between the sleeve and the plug such that the plug does not move when the sleeve rotates, and a nozzle communicating the output end of the cylinder with an interior of the sleeve.
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: 3592439 (1971-07-01), Ritchie
patent: 4017057 (1977-04-01), Strybel
patent: 4063708 (1977-12-01), Smith
patent: 4328948 (1982-05-01), Pearl, II
patent: 5819781 (1998-10-01), Wu
patent: 5975109 (1999-11-01), Wu
patent: 5983920 (1999-11-01), Gapinski et al.
patent: 6135733 (2000-10-01), Wu
Kamrath Alan
Rider Bennett Egan & Arundel, LLP.
Van Quang
Walberg Teresa
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