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Patent No. 6681419

Forehead support apparatusĀ 

A forehead support apparatus for resting a standing users forehead against a wall above a bathroom commode or urinal or beneath a showerhead.

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Class 318/531 - Variable length or tapped field winding


Subclass of Class 318 - Electricity: motive power systems
Definition: Subject matter in which means are provided for tapping or
No. of patents: 5
Last issue date: 09/09/2003


NumberTitleIssue Date
6617737Apparatus and method of powering light source
An apparatus and method of powering a light source are provided. The apparatus includes a motor, a voltage stabilizing circuit, and a light source. The motor includes a field assembly and an armature assembly. The field assembly includes an intermediate t...
09/09/2003
5757162Method and apparatus for operating an electric induction motor with a long and lossy extension cord
An alternating current induction motor having a multitapped RUN winding and including a controller which automatically determines an instant tap selection in response to changes in applied a.c. electric power voltage level appearing immediately at the mot...
05/26/1998
5521471Series (or compound) motor and control circuit for adjusting effective exciting turn ratio of series field winding according to rotational speed or load current
A switch device is mounted between the power supply and a multi-tap series field winding in a series or compound motor. The switch is responsive to changes in rotational speed or load current in order to change the effective excitation turn ratio of the s...
05/28/1996
4843286Vehicle window wiper with three brush motor and speed limiting
A wiper apparatus using a three brush, permanent magnet motor in which a zener diode has a cathode connected to the low speed brush and an anode connected to the high speed brush. The zener breakdown voltage of the zener diode is chosen so that it reverse...
06/27/1989
4780653Anti-stall motor drive
An anti-stall motor drive circuit for a very slow running permanent magnet d.c. motor is disclosed. The slow running speed of the motor sometimes allows an insulating film to build up between the brushes and the commutator which causes the stalled conditi...
10/25/1988
 
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