Vacuum cleaner control
First Claim
1. In a vacuum cleaner having a suction motor constructed to draw a first full load current, and a brush motor constructed to draw a second full load current, the sum of said currents being greater than a preselected current to be provided from a power source to the vacuum cleaner for operation thereof, the improvement comprisingcontrol means carried by a portion of the vacuum cleaner for causing the current provided from the power source to be reduced such that it will not exceed said preselected current during concurrent operation of the suction and brush motors.
7 Assignments
0 Petitions
Accused Products
Abstract
A vacuum cleaner structure having a control for reducing the total current delivery to the vacuum cleaner as when both a suction motor thereof and a brush motor thereof are being operated concurrently. The control includes an "On-Off" switch mounted on a portion of the suction hose for the vacuum cleaner. The invention comprehends the provision of such a current-reducing control where the full load currents of the suction and brush motors cumulatively total an amount greater than a preselected safe current deliverable to the vacuum cleaner. The control is arranged to be used with a vacuum cleaner having a suction hose connected between a suction unit and a cleaning unit thereof, such as a floor cleaning unit. In one form, the control utilizes a two-conductor wire suction hose, and in another form, the control utilizes a three-conductor wire suction hose. The "On-Off" switch is mounted on the handle on the end of the suction hose which may be attached to a cleaning unit and circuitry is provided in a control portion carried by the suction unit responsive to the disposition of the "On-Off" switch to effect the desired current and speed control of the system. The handle-mounted "On-Off" switch also controls the suction unit during cleaning operations which do not employ a floor cleaning unit including a motor-driven brush.
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Citations
36 Claims
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1. In a vacuum cleaner having a suction motor constructed to draw a first full load current, and a brush motor constructed to draw a second full load current, the sum of said currents being greater than a preselected current to be provided from a power source to the vacuum cleaner for operation thereof, the improvement comprising
control means carried by a portion of the vacuum cleaner for causing the current provided from the power source to be reduced such that it will not exceed said preselected current during concurrent operation of the suction and brush motors.
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7. In a vacuum cleaner having suction means including a suction motor constructed to draw a first full load current, and floor cleaning means including a brush motor constructed to draw a second full load current, the sum of said currents being greater than a preselected current to be provided from a power source to the vacuum cleaner for operation thereof, the vacuum cleaner further having a suction hose having a first end associated with said suction means and an opposite end associated with said floor cleaning means, said hose being provided with only two electrical conductors connected to the power source, the improvement comprising
control means having a portion carried by said suction hose for causing the current provided from the power source to be no greater than said preselected current during concurrent operation of the suction and brush motors.
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10. In a vacuum cleaner having a suction unit including a suction motor arranged to draw a first full load current, a floor cleaning unit including a brush rotatably driven by a brush motor arranged to draw a second full load current, and a suction hose connected between the suction unit and the floor cleaning unit and having a handle and only two electrical conductors extending lengthwise thereof, the improvement comprising:
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an "On-Off" switch carried by said handle and connected to at least one of said hose conductors; brush motor conductors carried by said floor cleaning unit for providing controlled energization of said brush motor by said "On-Off" switch; and control means carried by said suction unit responsive to said "On-Off" switch for causing energization of said suction motor concurrently with energization of said brush motor while preventing the total electrical current drawn by said suction and brush motors from being greater than a preselected current less than the total of said full load motor currents. - View Dependent Claims (11, 12, 13, 14)
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15. In a vacuum cleaner having a suction unit including a suction motor, a floor cleaning unit including a brush rotatably driven by a brush motor, and a suction hose connected between the suction unit and the floor cleaning unit and having a handle and only two electrical conductors extending in parallel lengthwise thereof, the improvement comprising:
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an "On-Off" switch carried by said handle and connected to at least one of said hose conductors; brush motor conductors carried by said floor cleaning unit for providing controlled energization of said brush motor by said "On-Off" switch; and control means carried by said suction unit responsive to said "On-Off" switch for causing energization of said suction motor concurrently with energization of said brush motor, said control means including a gated electronic switch in series with said suction motor and circuitry responsive to current flow through said brush motor to effect said energization of the suction motor. - View Dependent Claims (16, 17)
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18. In a vacuum cleaner having a suction unit including a suction motor arranged to draw a first full load current, a floor cleaning unit including a brush rotatably driven by a brush motor arranged to draw a second full load current, and a suction hose connected between the suction unit and the floor cleaning unit and having a handle and electrical conductors extending in parallel lengthwise thereof, the improvement comprising:
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an "On-Off" switch carried by said handle and connected to at least one of said hose conductors; brush motor conductors carried by said floor cleaning unit for providing controlled energization of said brush motor by said "On-Off" switch; and control means carried by said suction unit and floor cleaning unit responsive to said "On-Off" switch for causing energization of said suction motor concurrently with energization of said brush motor, said control means including a gated electronic switch in series with said suction motor and circuitry connected to said "On-Off" switch to be responsive to a condition of said "On-Off" switch causing current flow through said brush motor to cause said gated switch to effect said energization of the suction motor, and adjustable means for varying the firing angle of said gated switch for controlling the speed of the energized suction motor. - View Dependent Claims (19, 20)
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21. In a vacuum cleaner having a suction unit including a suction motor arranged to draw a first full load current, a floor cleaning unit including a brush rotatably driven by a brush motor arranged to draw a second full load current, and a suction hose connected between the suction unit and the floor cleaning unit and having a handle and electrical conductors extending in parallel lengthwise thereof, the improvement comprising:
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an "On-Off" switch carried by said handle and connected to at least one of said hose conductors; brush motor conductors carried by said floor cleaning unit for providing controlled energization of said brush motor by said "On-Off" switch; and control means carried by said suction unit and floor cleaning unit responsive to said "On-Off" switch for causing energization of said suction motor concurrently with energization of said brush motor, said control means including a gated electronic switch in series with said suction motor and circuitry connected to said "On-Off" switch to be responsive to a condition of said "On-Off" switch causing current flow through said brush motor to cause said gated switch to effect said energization of the suction motor, and adjustable means for varying the firing angle of said gated switch for controlling the speed of the energized suction motor, said "On-Off" switch being operable to energize said suction motor and said brush motor concurrently, said circuitry further including current-reducing means for reducing the permissible current flow through the suction motor when energized concurrently with said brush motor. - View Dependent Claims (22, 23, 24, 25, 26)
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27. In a vacuum cleaner having a suction unit including a suction motor arranged to draw a first full load current, a floor cleaning unit including a brush rotatably driven by a brush motor arranged to draw a second full load current, and a suction hose connected between the suction unit and the floor cleaning unit and having a handle and electrical conductors extending in parallel lengthwise of said suction hose, the improvement comprising:
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an "On-Off" switch carried by said handle and connected to at least one of said hose conductors; brush motor conductors carried by said floor cleaning unit for providing controlled energization of said brush motor by said "On-Off" switch; and control means carried by said suction unit and handle responsive to said "On-Off" switch for causing energization of said suction motor concurrently with energization of said brush motor, said control means including a gated electronic switch in series with said suction motor and circuitry connected to said "On-Off" switch to be responsive to a condition of said "On-Off" switch causing current flow through said brush motor to cause said gated switch to effect said energization of the suction motor by reducing the current draw of said suction motor, three said electrical conductors being provided in association with said suction hose, and said "On-Off" switch comprising a single pole single throw switch connected between one of said electrical conductors and said suction motor. - View Dependent Claims (28, 29, 30)
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31. In a vacuum cleaner having suction means including a suction motor adapted for attachment to a power source, a suction hose, surface cleaning means attached to said suction means by said suction hose, said suction hose including at least two electrical conductors for connection to a power source and having a first end associated with said suction means and an opposite end associated with said surface cleaning means and having a handle attached to said surface cleaning means, the improvement comprising
a control circuit including switch means mounted on said handle and a gated switch means in series with said suction motor, a trigger circuit for gating said gated switch means, a first current sensor responsive to the condition of said handle mounted switch for effecting operation of said trigger circuit, and a second current sensor responsive to the magnitude of the current in said control circuit for reducing the voltage applied to said suction motor when the current in said control circuit exceeds a predetermined level.
Specification