Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Reexamination Certificate
2001-03-23
2003-12-30
Till, Terrence R. (Department: 1744)
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
C015S049100, C015S383000, C015S385000, C015S400000
Reexamination Certificate
active
06668420
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a cleaner such as a carpet cleaning device having a powered brush assembly. More particularly, the present application pertains to such a brush assembly that can be easily removed from the nozzle of a carpet extractor.
2. Background Information
It is known in the prior art to provide a carpet extractor having powered brushes to assist in scrubbing of the surface being cleaned. The brush assembly is generally affixed to the main body of the carpet extractor. However, after many times of use, a user may want to remove the brush assembly to clean the brushes or replace them due to the wear and tear of their bristles.
One example of a brush removal device is illustrated by commonly owned U.S. Pat. No. 6,009,593 issued to Crouser. This patent generally comprises an elongate brush support beam having integrally molded, spaced apart, vertically aligned cylindrical bearings each receiving therein a vertically directed axle shaft of an associated rotary scrubbing brush. The brush assembly has outwardly projecting resilient tangs
51
depending from the lower end of gear guard
32
A. Each tab snaps into vertically elongated grooves or slots
53
and
57
respectively of lower housing in the base module
10
of the carpet extractor. Each tab has hook portions at its free end that will engage the bottom end of the vertical slot to support the guard and brush support beam. The resilient tabs are pressed inwardly by a user to disengage the hooks from the bottom end of the vertical slot and thus, allow removal of the brush block. However, due to the structure and arrangement of the tangs with respect to the brush block, a user has some difficulty in accessing, grasping, and pressing the tabs inwardly. Often, a tool such as a screwdriver has to used by the user to press the tabs inwardly.
Hence, it is an object of the present invention to provide a brush block having a device that allows it to be easily removed by a user from the cleaner, carpet extractor, or the like.
It is another object of the present invention to provide a simple inexpensive removal device for a brush block of a cleaner, carpet extractor, or the like.
SUMMARY OF THE INVENTION
The foregoing and other objects of the present invention will be readily apparent from the following description and the attached drawings. In one embodiment of the present invention a cleaner for cleaning a surface is provided comprising a main body and a brush assembly for engaging the surface being cleaned. An engaging member on either the main body or brush assembly and a retaining portion on the other main body or brush assembly. The engaging member and retaining portion are releasably connected to each other such that either the engaging member or retaining portion is accessible for engagement by a user to disengage the engaging member from the retaining portion.
REFERENCES:
patent: 1720153 (1929-07-01), Simpson
patent: 2130635 (1938-09-01), Dow et al.
patent: 2276943 (1942-03-01), Dow
patent: 3683444 (1972-08-01), Schaefer et al.
patent: 4319379 (1982-03-01), Carrigan et al.
patent: 4610047 (1986-09-01), Dick et al.
patent: 4720891 (1988-01-01), Rennecker et al.
patent: 5918340 (1999-07-01), Young
patent: 6009593 (2000-01-01), Crouser et al.
patent: 0 192 943 (1986-09-01), None
patent: 1-201221 (1989-08-01), None
Page UD-01 From Service Manual for Bissell Upright Deep Cleaner (Models 1690, 1695) issued Jan., 1998.
Photograph of triangular cap for the dirty tank assembly for the Bissell Upright Deep Cleaner Model 1690, received on Jun. 29, 1998.
Pages 15, 17 & 19 from Owner's Manual For A Kenmore Vacuum Cleaner (Models 116.31732 and 116.31722) received on Nov. 3, 2000.
Photograph of the filter tabs for the filter cover and locking tabs for the agitator cover on Kenmore Vacuum Cleaner (Model 116.31732), received on Nov. 3, 2000.
Hannan Larry W.
Steiner Ryan S.
Thomas Leron R.
Lowe A. Burgess
Schenck Brett A.
The Hoover Company
Till Terrence R.
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