REMOTE CONTROL FOR VACUUM CLEANER MOTOR

• US 3,855,665 A
• Filed: 12/15/1972
• Issued: 12/24/1974
• Est. Priority Date: 12/28/1971
• Status: Expired due to Term

• Current Assignee: Osten Schwartz
• Original Assignee: Osten Schwartz
• Inventors: Schwartz, Osten
• Primary Examiner(s): Bleutge, Robert L.
• Assistant Examiner(s): Moore, C. K.
• Application Number:
  US05/315,438
• Time in Patent Office: 739 Days
• Field of Search: 15/339,412 323/36,24
• US Class Current: 15/339
• CPC Class Codes: A47L 9/2842 Suction motors or blowers
• CPC Class Codes: A47L 9/2857 User input or output elements for control, e.g. buttons, switches or displays
• CPC Class Codes: A47L 9/2894 Details related to signal transmission in suction cleaners
• CPC Class Codes: H02P 25/14 Universal motors H02P25/12 takes precedence
• CPC Class Codes: H02P 7/285 controlling armature supply only
• CPC Class Codes: Y10S 388/919 Triggered by resistor or capacitor

Abstract

In a household appliance, such as a vacuum cleaner, a remote control is provided for the vacuum cleaner motor speed as well as the on/off function of the motor. The control unit is low voltage where connected to the operating member and complies with government safety requirements.

Claims

1. A remote control arrangement for a vacuum cleaner provided with a motor having an electrical energy source, a flexible hose, a cleaning appliance, a coupling means operatively connecting the flexible hose with the cleaning appliance, said coupling means also functioning as a hand grip comprising a. an electrical circuit adapted to connect the source of electrical energy to the motor and including 1. a thyristor device provided with a phase shifting network controlling the power input to the motor, 2. a standard type transformer generating a conventional hysteresis curve in which the primary winding thereof is a first variable impedance that is a part of the phase shifting network, 3. a second variable impedance including the secondary winding of the transformer and a variable resistor located at a distance from the motor, an operating member for the variable resistor located on said hand grip, and a low voltage conduit positioned on said hose coupling the variable resistor to the secondary winding of the transformer, 4. the magnitude of the first variable impedance which affects the phase shifting network being dependent upon and changeable by the second variable impedance, 5. said phase shifting network including a capacitor coupled in parallel to the primary winding of said transformer whereby a desirable curve shape of said control pulses of said thyristor is produced.

2. The arrangement as claimed in claim 1 wherein the operating member is a rotatable knob.

3. a second variable impedance including the secondary winding of the transformer and a variable resistor located at a distance from the motor, an operating member for the variable resistor located on said hand grip, and a low voltage conduit positioned on said hose coupling the variable resistor to the secondary winding of the transformer,

4. the magnitude of the first variable impedance which affects the phase shifting network being dependent upon and changeable by the second variable impedance,

5. said phase shifting network including a capacitor coupled in parallel to the primary winding of said transformer whereby a desirable curve shape of said control pulses of said thyristor is produced.