Brushing – scrubbing – and general cleaning – Implements – Brush or broom
Reexamination Certificate
1998-12-10
2001-05-29
Chin, Randall E. (Department: 1744)
Brushing, scrubbing, and general cleaning
Implements
Brush or broom
C015S176100, C015S176600
Reexamination Certificate
active
06237183
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to a toothbrush according to those having interchangeable brush heads for ready replacement when the brush head is worn or for insertion of differing brush heads for use by plural users, and to a brush head for the toothbrush.
Toothbrushes and brush heads of this type are known and are available on the market in a variety of designs. Illustrative of prior art constructions are seen in the U.S. patents to Hansen et al U.S. Pat. No. 4,80,924 or Arsenault et al U.S. Pat. No. 5,224,234, for example.
The object of the present invention is to provide a toothbrush and a brush head which, in addition to ensuring that used-up brush heads can be exchanged in a straightforward manner, also ensure that the brush head is fastened securely when the toothbrush is used.
BRIEF SUMMARY OF THE INVENTION
This object is achieved according to the invention by a toothbrush and a brush head having the unique axial insertion and removal of a brush head from the toothbrush handle which insures releasable latching of the head to the handle.
Preferred developments of the toothbrush according to the invention and of the brush head form the structure seen in the drawings and include the flat groove in the handle cooperating with the flat tongue spaced from the base of the brush head, including parallel resilient latches on the brush head detachably interengaging with recesses on the handle adjacent the groove therein.
REFERENCES:
patent: 3181189 (1965-05-01), Leyden
patent: 3369265 (1968-02-01), Halberstadt et al.
patent: 4780924 (1988-11-01), Hansen et al.
patent: 5224234 (1993-07-01), Arsenault et al.
patent: 5412831 (1995-05-01), Mongelluzzo
patent: 5737792 (1998-04-01), Quigless
patent: 5875510 (1999-03-01), Lamond et al.
patent: 900692 (1954-01-01), None
patent: 0199849 (1986-11-01), None
patent: 2559656 (1985-08-01), None
patent: 2044089 (1979-03-01), None
patent: 2067894 (1980-01-01), None
patent: DM031636 (1994-12-01), None
Chin Randall E.
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