HEIGHT ADJUSTMENT MECHANISM FOR A VACUUM CLEANER
1 Assignment
0 Petitions
Accused Products
Abstract
A vacuum cleaner including a handle and a base. The base includes a housing, a nozzle defining an inlet of the vacuum cleaner, and a lift assembly including a guide member configured to support the base on a surface. The vacuum further includes a height adjustment mechanism including a knob and a ramp. The knob is operable to rotate the ramp with respect to the housing, and the lift assembly is coupled to the ramp such that the lift assembly moves along the ramp to move the inlet from the lower position to the upper position in response to rotation of the ramp by the knob. The ramp includes a first end that defines a lower position of the inlet and a second end that defines an upper position of the inlet, and the ramp has a continuous incline from the first end to the second end.
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Citations
41 Claims
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1-20. -20. (canceled)
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21. A vacuum cleaner configured to remove debris from a surface, the vacuum cleaner comprising:
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a suction source; a dirt collection chamber in fluid communication with the suction source; a handle coupled to the suction source and the dirt collection chamber; a base coupled to the handle and configured to be moved along the surface by the handle, the base including, a housing, a nozzle defining an inlet of the vacuum cleaner through which debris travels from the surface toward the dirt collection chamber, a lift assembly including a guide member configured to support the base on the surface, the lift assembly coupled to the housing for movement with respect to the housing to move the inlet from a lower position in which the inlet is a first distance above the surface to an upper position in which the inlet is a second distance above the surface, the first distance less than the second distance, and a height adjustment mechanism including a knob and a ramp, the knob operable to rotate the ramp with respect to the housing, and the lift assembly coupled to the ramp such that the lift assembly moves along the ramp to move the inlet from the lower position to the upper position in response to rotation of the ramp by the knob, wherein the ramp includes a first end that defines the lower position and a second end that defines the upper position, and wherein the ramp has a continuous incline from the first end to the second end. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. A vacuum cleaner configured to remove debris from a surface, the vacuum cleaner comprising:
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a suction source; a dirt collection chamber in fluid communication with the suction source; a handle coupled to the suction source and the dirt collection chamber; a base coupled to the handle and configured to be moved along the surface by the handle, the base including, a housing, a nozzle defining an inlet of the vacuum cleaner through which debris travels from the surface toward the dirt collection chamber, a lift assembly including a guide member configured to support the base on the surface, the lift assembly coupled to the housing for movement with respect to the housing to move the inlet from a lower position in which the inlet is a first distance above the surface to an upper position in which the inlet is a second distance above the surface, the first distance less than the second distance, and a height adjustment mechanism including a ramp, a knob rotatable with respect to the housing about an axis to rotate the ramp with respect to the housing, the knob movable along the axis with respect to the housing and the ramp between a locked position and an unlocked position, and a biasing member that biases the knob toward the locked position, wherein the knob is manually rotatable about the axis with respect to the housing when the knob is in the unlocked position to rotate the ramp with respect to the housing, wherein the lift assembly is coupled to the ramp such that the lift assembly moves along the ramp to move the lift assembly with respect to the housing and to move the inlet from the lower position to the upper position in response to rotation of the ramp by the knob, and wherein the knob is fixed from rotation with respect to the housing about the axis when the knob is in the locked position to fix the position of the ramp and retain the inlet in the upper position and the lower position. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39)
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40. A vacuum cleaner configured to remove debris from a surface, the vacuum cleaner comprising:
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a handle; a suction source disposed within the handle; a dirt collection chamber removable coupled to the handle and in fluid communication with the suction source; a base pivotally coupled to the handle and configured to be moved along the surface by the handle, the base including, a housing, a nozzle defining an inlet of the vacuum cleaner through which debris travels from the surface toward the dirt collection chamber, a lift assembly including a guide member configured to support the base on the surface, the lift assembly coupled to the housing for movement with respect to the housing to move the inlet from a lower position in which the inlet is a first distance above the surface to an upper position in which the inlet is a second distance above the surface, the first distance less than the second distance, and a height adjustment mechanism including, a ramp having a first end that defines the lower position, a second end that defines the upper position, and a continuous incline from the first end to the second end, a knob rotatable with respect to the housing about an axis to rotate the ramp with respect to the housing, the knob movable along the axis with respect to the housing and the ramp between a locked position and an unlocked position, and a biasing member that biases the knob toward the locked position, wherein the knob is manually rotatable about the axis with respect to the housing when the knob is in the unlocked position to rotate the ramp with respect to the housing, wherein the lift assembly is coupled to the ramp such that the lift assembly moves along the ramp to move the inlet from the lower position to the upper position in response to rotation of the ramp by the knob, and wherein the knob is fixed from rotation with respect to the housing about the axis when the knob is in the locked position to fix the position of the ramp and retain the inlet in the upper position and the lower position. - View Dependent Claims (41)
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Specification