Bizarre Patents
Pillow with retractable umbrella
A pillow assembly having a supporting assembly and a retractable umbrella assembly that is easily transportable and allows a user to support his/her head while covering their face from sunlight.
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| Number | Title | Issue Date |
| 7282884 | Procedure for driving a moveable part of an item of furniture A method of driving a moveable part and, in particular, a drawer by a drive unit and, in particular, an electric drive unit. At least over a partial length of track (S2), forming part of the total track traversed by the moveable part, the force exerted on... | 10/16/2007 |
| 4366423 | Industrial robot system In order to attain a more suitable control of a robot unit which serves a machine tool in accordance with various conditions of the operations of the machine tool and the robot unit, the number of the kinds of signals produced in the machine tool is incre... | 12/28/1982 |
| 4283667 | Motor field exciter Disclosed is an exciter circuit for an electrical load such as the field winding of a direct current (DC) motor. The exciter circuit regulates the DC current applied to the load from an alternating current (AC) source in response to an isolated feedback s... | 08/11/1981 |
| 4214190 | Tension controlling Shunt motor field control for setting motor torque (and thereby controlling tension on a reeler or the like driven by the motor) comprising thyristor control gated by a comparator with a ramp-form voltage input compared to a reference level established by... | 07/22/1980 |
| 4181875 | Drive circuit for a DC motor A drive circuit for a DC motor provided with an armature having an armature winding and a plurality of field poles. The field poles are each composed of a main pole excited by a field winding and an auxiliary pole formed with a permanent magnet of the sam... | 01/01/1980 |
| 4088972 | Electrical circuit arrangement for filtering motor brush noise An electrical circuit arrangement for filtering electrical brush noise transmitted from an open switching wire connected at one end to an intermittently used brush of a multi-speed electric motor driven by a power source and having an electrically grounde... | 05/09/1978 |
| 4080556 | Compound D.C. electrical motor with shunt field demagnetization protection A DC electrical motor of the form having one field winding connected in series with the armature winding in addition to a shunt field winding connected in parallel with the armature winding is provided with a diode or the like in the shunt field winding c... | 03/21/1978 |
| 4048550 | Flux corrective control apparatus for motor drives A direct current motor control apparatus includes corrective circuit for eliminating the influence of non-linearities on speed regulation as a result of load variations. A summer circuit at the input of the speed regulator algebraically combines signals r... | 09/13/1977 |
| 3989990 | Feedback field control for an electric vehicle An electric vehicle having a separately excited field controlled direct current drive motor powered by a direct current power supply wherein field current is pulse-width modulated in response to operator control and the vehicle operating parameters. An ar... | 11/02/1976 |
