Vacuum cleaner base with nozzle height adjustment
First Claim
Patent Images
1. A vacuum cleaner comprising:
- a base assembly having a housing, a suction nozzle, a pair of wheels at a rear portion of the housing, a support at a front portion of the housing, and an adjuster between the housing and the support to selectively adjust the vertical position of the suction nozzle with respect to a surface to be cleaned;
wherein the adjuster comprises;
a ratchet mechanism comprising a drum movably mounted between the support and the housing for movement between a raised position and a lowered position, the ratchet mechanism being shaped to raise the housing with respect to the support in the raised position and to lower the housing with respect to the support in the lowered position, wherein the drum comprises a plurality of detents in an outer surface thereof;
a first actuation rod; and
a foot pedal moveably mounted to the housing and coupled at one end to the first actuation rod to incrementally move the ratchet mechanism between the raised and lowered positions as the foot pedal is pressed;
wherein the first actuation rod is positioned between the foot pedal and the drum and is adapted to rotate the drum and selectively register with successive detents on the drum when the foot pedal is pressed.
3 Assignments
0 Petitions
Accused Products
Abstract
An upright vacuum cleaner comprises a base assembly pivotally connected to an upright assembly. The base assembly comprises housing, a support, and a ratchet-operated nozzle height adjustment mechanism for raising or lowering a suction nozzle on the base assembly relative to a surface to be cleaned. The ratchet-operated nozzle height adjustment mechanism includes a ratchet mechanism for raising and lowering the housing relative to the support.
13 Citations
11 Claims
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1. A vacuum cleaner comprising:
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a base assembly having a housing, a suction nozzle, a pair of wheels at a rear portion of the housing, a support at a front portion of the housing, and an adjuster between the housing and the support to selectively adjust the vertical position of the suction nozzle with respect to a surface to be cleaned; wherein the adjuster comprises; a ratchet mechanism comprising a drum movably mounted between the support and the housing for movement between a raised position and a lowered position, the ratchet mechanism being shaped to raise the housing with respect to the support in the raised position and to lower the housing with respect to the support in the lowered position, wherein the drum comprises a plurality of detents in an outer surface thereof; a first actuation rod; and a foot pedal moveably mounted to the housing and coupled at one end to the first actuation rod to incrementally move the ratchet mechanism between the raised and lowered positions as the foot pedal is pressed; wherein the first actuation rod is positioned between the foot pedal and the drum and is adapted to rotate the drum and selectively register with successive detents on the drum when the foot pedal is pressed. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vacuum cleaner comprising:
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a base assembly having a housing, a suction nozzle, a pair of wheels at a rear portion of the housing, a support at a front portion of the housing, and an adjuster between the housing and the support to selectively adjust the vertical position of the suction nozzle with respect to a surface to be cleaned; wherein the adjuster comprises; a ratchet mechanism movably mounted between the support and the housing for movement between a raised position and a lowered position, the ratchet mechanism being shaped to raise the housing with respect to the support in the raised position and to lower the housing with respect to the support in the lowered position; a first actuation rod; and a foot pedal mounted to the housing for movement between a raised position and a lowered position and adjustably connected at one end to the ratchet mechanism to incrementally move the ratchet mechanism between the raised and lower positions as the foot pedal is moved between the raised and lowered positions; wherein the ratchet mechanism comprises; a drum mounted to the support and including a plurality of detents on an outer surface thereof, wherein the first actuation rod is positioned between the foot pedal and the drum and is adapted to selectively register with successive detents on the drum as the foot pedal is moved between the raised and lowered positions; and a second actuation rod that is slideably mounted to the support and has a tooth that selectively engages one of the detents and retains the drum in a predetermined position between movements of the first actuation rod. - View Dependent Claims (9, 10, 11)
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Specification