Telescopic handle for a cleaning implement

Details Telescopic handle for a cleaning implement Telescopic handle for a cleaning implement

2002-12-12

2004-03-09

Mah, Chuck Y. (Department: 3676)

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Handle, handle component, or handle adjunct

Extensible handle

C016SDIG004, C016S436000, C015S144400

Reexamination Certificate

active

06701578

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention is related to a cleaning implement, and more particularly to a telescopic handle for the cleaning implement.
2. Description of Related Art
Referring to
FIG. 6
, a conventional telescopic handle for a cleaning implement has an outer tube (
41
) and an inner tube (
42
) movably provided in the outer tube (
41
). A rear end of the outer tube (
41
) is mounted in a seat (
43
), and a sealing member (
44
) is secured at a rear end of the inner tube (
42
). A positioning sleeve (
45
) including an inner sleeve (
451
) and an outer sleeve (
452
) is mounted at a front end of the outer tube (
41
). A joint (
46
) is mounted at a front end of the inner tube (
42
) for attaching a brush (not shown or numbered).
The inner tube (
42
) can be extended out from the outer tube (
41
) to lengthen an overall length of the handle, and positioned by screwing the outer sleeve (
452
) of the positioning sleeve (
45
). Water or cleanser can flow through the inner tube (
42
) and out of from the joint (
46
).
However, a caliber of the inner tube (
42
) is slightly smaller than a caliber of the outer tube (
41
), so that the weight of the handle when full of water or cleanser is great, which is very difficult and inconvenient to use.
Referring to
FIG. 7
, another conventional handle has an outer tube (
51
) and an inner tube (
53
) received in the outer tube (
51
). The outer tube (
51
) and the inner tube (
53
) are mounted on a seat (
54
). A middle tube (
52
) is movably provided between the outer tube (
51
) and the inner tube (
53
); A cap (
55
) is provided at a rear end of the middle tube (
52
), and a sealing member (
58
) including two sealing rings (
581
) is provided at a front end of the inner tube (
53
). The sealing rings (
581
) are tightly abutted an inner wall of the middle tube (
52
). A positioning sleeve (
56
) including an inner sleeve (
561
) and a taper outer sleeve (
562
) is provided at a front end of the outer tube (
51
). A joint (
57
) is mounted at a front end of the middle tube (
52
).
Because the middle tube (
52
) is provided, a caliber of the inner tube (
53
) can be significantly smaller than that of the outer tube (
51
) to reduce the weight of the handle when full of water or cleanser. However, because the sealing rings (
581
) have a round cross section which must be deformed to tightly abut the inner wall of the middle tube (
52
) for achieving a watertight effect, a friction between the sealing rings (
581
) and the middle tube (
52
) is large, which makes it difficult for a user to extend or retract the middle tube (
52
). Furthermore, the sealing ring (
581
) is generally made of rubber, and the outer tube (
51
) and the middle tube (
52
) are generally made of aluminum harder than rubber. Thus, the sealing ring (
581
) will be worn out after using the cleaner only a very short time.
Therefore, the invention provides a telescopic handle for a cleaning implement to mitigate and/or obviate the aforementioned problems.
SUMMARY OF THE INVENTION
The main objective of the invention is to provide a telescopic handle for a cleaning implement which is easy to operate.
Another objective of the invention is to provide a telescopic handle for a cleaning implement which has a good watertight effect.
A further objective of the invention is to provide a telescopic handle for a cleaning implement which is durable.


REFERENCES:
patent: 2841425 (1958-07-01), Oeters
patent: 2902592 (1959-09-01), Cole et al.
patent: 3380097 (1968-04-01), Pharris
patent: 3489451 (1970-01-01), Guckenberger
patent: 4524484 (1985-06-01), Graham
patent: 4659125 (1987-04-01), Chuan
patent: 4856929 (1989-08-01), Smahlik et al.
patent: 4967484 (1990-11-01), Nosek
patent: 5011319 (1991-04-01), Levi et al.
patent: 5692856 (1997-12-01), Newman et al.
patent: 5887314 (1999-03-01), Jordan, Jr.
patent: 5940933 (1999-08-01), Chang
patent: 6182539 (2001-02-01), Webster
patent: 9228595 (1993-05-01), None
patent: 2448877 (1976-04-01), None
patent: 3123160 (1983-01-01), None
patent: 2272632 (1994-05-01), None

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