Patent Application
20070277344
These and other features, aspects and advantages of the present invention will become better understood with reference to the accompanying drawings, wherein:
The carpet cleaner 100 with a base 90, a handle 92, and a plurality of wheels 94 includes a suction opening 10, a fulcrum 20, a lever 30, and a cable line 40.
The suction opening 10 is provided at a front portion of the base 90 of the carpet cleaner 100.
The fulcrum 20 is provided at a rear portion of the base 90 of the carpet cleaner 100.
The cable line 40 is extended from the rear portion of the lever toward the handle.
The suction opening 10 is pressed down to the carpet floor by pulling up the cable line 40, and the suction opening 10 contacts the carpet floor tight for facilitating suction of the carpet cleaner 100.
The suction opening 10 is fixed to the base 90 of the carpet cleaner 100. The base forms a lever 30 about the fulcrum 20, and the base 90 of the carpet cleaner 100 is tilted as a whole when the cable line 40 is pulled up.
The suction opening 10 is oblong, and the suction opening 10 is perpendicular to the moving direction of the carpet cleaner 100.
The fulcrum 20 is vertically aligned with the handle 92 and the wheels 94.
The lever 30 is integrated with the base 90 of the carpet cleaner 100, the fulcrum 20 is integrated with the base 90, and the fulcrum 20 is defined by the position of the handle 92.
The lever 30 may further include a rear bar 50 of a predetermined length extended from the rear side of the base. 90. The cable line 40 is fixed to the end of the rear bar 50 as shown in
The carpet cleaner 100 may further include a plurality of guide rings 96 provided along the rear side of the handle 92, and the cable line 40 is queued through the guide rings 96.
The carpet cleaner 100 may further include a hand lever 44, fixed to the handle 92 and connected to the cable line 40, for pulling the cable line 40. The hand lever 44 is disposed directly below the handle 92.
The cable line 40 controls the pressing-down force from the suction opening 10 through the hand lever 44.
The base 90 may further include a wheel axle 98, and the wheel axle 98 works as the fulcrum 20.
In the second embodiment as shown in
The carpet cleaner 100 further includes a lever 30, and the lever 30 includes two front legs 32, a rear fork 34, and a rear bar 50 as shown in
The rear fork 34 is for connecting to the two front legs 32 for forming the active end of the lever 30. The rotatable axle 98 works as a wheel axle.
The rear bar 50 is extended from the rear fork 34.
The fulcrum 20 includes a rotatable axle 98 provided through the base 90 and fixed to the two legs 32 of the lever 30 at the fulcrum point.
The rotatable axle 98 is integrated with the lever 30.
The suction opening 10 is partially extracted and presses down the carpet floor when the cable line 40 is pulled up. Only the lever 30, formed by the suction opening 10, two front legs 32, and the rear fork 34, is tilted.
The fulcrum 20 further includes two fulcrum caps 122 for covering and fixing the connection between the lever 30 and the rotatable axle 98 as shown in
Alternatively, as shown in
The suction opening 10 is provided at a front portion of the base 90 of the carpet cleaner 100.
The detachable pressing bar 80 is extended from the front portion of the base 90 above the suction opening 10.
The suction opening 10 is pressed down to the carpet floor by pushing down the detachable pressing bar 80, and the suction opening 10 contacts the carpet floor tight for facilitating suction of the carpet cleaner 100.
The detachable pressing bar 80 includes a built-in spring 82 for regulating the amount of pressure to the detachable pressing bar 80.
The pressing bar 80 includes a handle 84 adapted to grab and push.
The carpet cleaner 100 may further include one of more rear wheels 74 provided under the base 90.
While the invention has been shown and described with reference to different embodiments thereof, it will be appreciated by those skilled in the art that variations in form, detail, compositions and operation may be made without departing from the spirit and scope of the invention as defined by the accompanying claims.
