Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7304232 | Joystick gain control for dual independent audio signals A joystick control (20) mounted on the body (12) of an electric guitar (11) adjacent to the customarily picked section of the strings (16) provides convenient simultaneous independent gain control of two pickup signals. A pick may be held... | 12/04/2007 |
| 7280369 | Multi-layer printed circuit board for a keyboard A multi-layer printed circuit board for a keyboard has an upper and lower layers, an insolating separation positioned between the upper and lower layers, multiple thin film switches having two thin conductive element respectively formed on the upper and lower layer,... | 10/09/2007 |
| 7271699 | Changing an electrical resistance of a resistor A resistor and a structure for changing an electrical resistance of a resistor. Initially, the resistor is provided, wherein the resistor has a length L and an electrical resistance R1. A portion of the resistor is exposed to a laser radiation, wherein th... | 09/18/2007 |
| 7046118 | Signal processing circuit board with variable resistor which is hardly declined in the mechanical strength while its variable resistor is not limited to one particular location for the installation A signal processing circuit board includes a board body, a variable electronic element, and a hole. The variable electronic element is mounted in a mounting side of the board body. The variable electronic element has an operating member to control an output outputte... | 05/16/2006 |
| 6995650 | Electrical part prevented from improper mounting on circuit board, and mounting structure for the electrical part A mounting structure is provided to mount, on the same circuit board, two types of electrical parts in each of which an operating member is rotatably supported by a housing including sliders and a conductive pattern, such as a contact pattern, and which are similar ... | 02/07/2006 |
| 6853290 | Switch/volume control assembly The present invention relates to switch or volume control assemblies, in particular to switch or volume control assemblies to be mounted in e.g. hearing aids, said assembly comprising a movable member, such as a wheel-like member positioned between at least two deta... | 02/08/2005 |
| 6778063 | Angular position sensor An angular position sensor determines the angular orientation of a rotatable shaft. The device includes a rotor rotatable with the shaft. A first housing receives the rotor and a second housing at least partially surrounds the first housing. A flexible member betwee... | 08/17/2004 |
| 6667683 | Planar trimming resistor, applications and method for its manufacture A trimming resistor is manufactured by depositing a resistive layer on a substrate, with a passivation layer having windows, and a contact layer which is in contact with the resistive layer via the windows. Trimming is carried out by interrupting the cont... | 12/23/2003 |
| 6538555 | Throttle valve having potentiometer with supporting plate The invention relates to a throttle valve comprising a potentiometer with a supporting plate (1) the supporting plate (1) to be mounted on a substrate wherein the supporting plate (1) has an upper side (18) on which the resistance tracks (3, 4), wiper tra... | 03/25/2003 |
| 6405432 | Potentiometer mounting clip for a joystick controller A mounting clip for a rotary potentiometer. In a preferred embodiment, the mounting clip comprises front and back generally vertical opposing side segments elastically deformable relative to each other between a naturally biased position and an outward fl... | 06/18/2002 |
| 6259351 | Toggle and slide dimmer switch The present invention presents an electrical control box which provides a common platform for either a sliding switch or a toggling switch. The present invention uses the same PC board for both types of operation. A common wrap around heat sink provides a... | 07/10/2001 |
| 6040758 | Potentiometer mounting clip for a joystick controller A mounting clip for a rotary potentiometer. In a preferred embodiment, the mounting clip comprises front and back generally vertical opposing side segments elastically deformable relative to each other between a naturally biased position and an outward fl... | 03/21/2000 |
| 5973383 | High temperature ZrN and HfN IR scene projector pixels A structure and method of making resistive emitting members which exhibit high resistivity while at the same time providing high temperature operation significantly above that known in the art. Specifically the use of nitrides of Group IVB transition meta... | 10/26/1999 |
| 5520044 | Bearing free spring free throttle position sensor The rotor of a rotary position sensor mounts directly upon the rotary shaft to be sensed. The rotor prior to installation is retained in position by a pair of small protrusions extending from the rotor that cooperatively engage a pair of small indentation... | 05/28/1996 |
| 5493148 | Semiconductor device whose output characteristic can be adjusted by functional trimming A semiconductor device includes a resistor network having a plurality of trimming polysilicon resistors. The polysilicon resistors have the same width and different lengths and can be selectively fused according to the value of current which is caused to ... | 02/20/1996 |
| 5079537 | Apparatus for assembling and holding a potentiometer assembly A support plate for mounting one or more potentiometers includes a receptor for receiving a potentiometer and alignment tabs for guiding the potentiometer into position and preventing it from rotating during mounting. The potentiometer may be secured to t... | 01/07/1992 |
| 5039975 | Resistor substrate A resistor substrate for a variable resistor of the enclosed type which may be employed in a throttle sensor of an automobile. The resistor substrate has a disk portion and a rectangular apron provided at a circumferential portion of the disk portion. The... | 08/13/1991 |
| 4973939 | Potentiometer combination mounted on a circuit board A balancing and a setting potentiometer, in combination, arranged one above the other in a common housing, mounted on a circuit board, with electric connections guided to the circuit board and with a full-length hollow shaft arranged for adjusting the pot... | 11/27/1990 |
| 4748437 | Connector for a picture tube A picture tube connecting device, including a common integral insulating housing, connector contacts in the common housing for electrically contacting a picture, and at least one potentiometer, including a focus adjusting potentiometer in the housing, ele... | 05/31/1988 |
| 4679025 | Construction for electrical control panel An electrical part, either of rotary type or linear slide type, including a circuit pattern, a sliding member sliding on the circuit pattern, and an operating member for operating the sliding member, in which the circuit pattern is provided on a circuit s... | 07/07/1987 |
| 4588854 | Panel mountable module housing A housing for panel mountable modules and comprising a base having dependent therefrom yieldable support pedestals disposed for pressing resiliently against an adjacent surface of a panel and latching projections disposed for engaging an opposing surface ... | 05/13/1986 |
| 4527440 | Self-aligning control mechanism A self-aligning mechanism utilizes a flexible shaft affixed at one end to a means for rotating it. The other end of the rod is configured to engage a complementarily-shaped opening in a coupler provided with a funnel-shaped front surface to guide the flex... | 07/09/1985 |
| 4502034 | Electric component An electrical component comprises a holder having shaft holes and a plurality of rotary members each consisting of a shaft portion fitting into a respective shaft hole in the holder. Connection members formed unitarily with the rotary members each connect... | 02/26/1985 |
| 4496791 | Spring-biased connector for electrically bonding a device to a supporting wall A mounting assembly for mounting an electrical device on a supporting wall of conductive material and including a flanged bushing of conductive material with an integral threaded stem portion extending through an aperture in the wall, and a threaded faste... | 01/29/1985 |
| 4495547 | Bushing for use between a control knob and a housing A bushing is disclosed for protecting a printed circuit board mounted potentiometer or the like from transverse and axial loads which are applied to the potentiometer during adjustment thereof. The potentiometer or other control device has a control shaft... | 01/22/1985 |
| 4453152 | Sewing machine control A control for a sewing machine is provided with a turnable outer knob for operating a potentiometer, and a slidable inner knob within the outer knob for moving a contact member to connect conductive paths on a printed circuit board which supports both the... | 06/05/1984 |
| 4420795 | Electronic component mounting A mounting bracket supports electronic components, particularly a plurality of resistors in a parallel array. The mounting bracket is secured to a printed circuit board to which the resistors are attached in a predetermined circuit arrangement. The mounti... | 12/13/1983 |
| 4400686 | Variable electrical resistance device A rotary variable electrical resistance device comprises a housing; a spindle, arranged for rotation in the housing to adjust the setting of the device, and arranged to be rigidly secured to the end of a rotatably supported shaft serving as an extension o... | 08/23/1983 |
| 4390859 | Electric thermostat with adjusting knob An electric thermostat having a knob and potentiometer means with a simple adjusting means to couple the two together. A single clip means made of a resilient material allows for connecting the knob to the potentiometer and allows for repositioning the kn... | 06/28/1983 |
| 4363018 | Electronic components of rotary type In an electronic component of rotary type comprising a bearing sheath which has a front portion and a rear portion and is to be fixedly mounted on a frame of an electric appliance, an operation shaft disposed in the bearing sheath, a substrate fixed at a ... | 12/07/1982 |
| 4146866 | Variable resistance control An epoxy glass fabric strip is used to carry a carbon based resistive path.... | 03/27/1979 |
| 4001759 | Variable electric resistor device A variable electric resistor device comprises a block of electrical insulating material. An elongated member of current resistive metal is removably positioned in the insulating material. A pair of electrically conductive terminal leads are each electrica... | 01/04/1977 |
