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| Number | Title | Issue Date |
| 7155956 | Medium, method and system for proving a turbine meter A novel medium, method and system for proving a turbine meter for use with natural gas. The novel test medium is a gas having the following characteristics: (a) Density>2×Density of Natural Gas; (b) Dynamic Viscosity | 01/02/2007 |
| 6396385 | Variable resistor A variable resistor includes at least two sliders fixed to the bottom of the concavity of a case, a rotor having an engaging portion for engagement with a tool, on the upper side thereof and rotatably received in the concavity of the case, a resistor subs... | 05/28/2002 |
| 6239688 | Variable resistor in which an electrode connected to a resistor can not be required There is provided a variable resistor comprised of a resistor formed at a movable member arranged to be reciprocatable, and a slider element attached to a fixing member fixed in opposition to the movable member, slidingly contacted with the resistor. The ... | 05/29/2001 |
| 5936512 | Rotary potentiometer A rotary potentiometer device (1) has a rotary potentiometer (4) disposed within a housing (2) and a handle (7) above the housing (2) for rotating a resistive disk (6) of the rotary potentiometer (4). A latching device latches the handle (7) with the uppe... | 08/10/1999 |
| 5838221 | Motor control system and control head A control head for remote actuators on a vehicle heater/air conditioner system comprises variable resistors operated by control knobs to provide variable motor control voltages to the actuators which comprise servo-actuators or a pulse width modulated blo... | 11/17/1998 |
| 5790012 | Variable resistor There is provided a variable resistor having a small number of parts and having an excellent heat releasing property. A rotor is rotatably contained in a concave portion of a case. The rotor has a resistive element provided on the bottom thereof and elect... | 08/04/1998 |
| 5754301 | Potentiometer The potentiometer has a housing in which a carrier plate which supports a resistance strip is disposed. A rotary pin is supported on the housing and has a sliding contact connected to the rotary pin for engaging the resistance strip. The carrier plate is ... | 05/19/1998 |
| 5570076 | Variable resistance device The present invention provides a variable resistance device having at least one pair of channels retaining a conductive ball between them. The channels contain a resistive element and a conductive element and movement of the conductive ball within the cha... | 10/29/1996 |
| 4806901 | Motion transducer A device for transmitting linear motion into rotary motion, particularly as applied to an oil pressure transducer for a vehicle I.C.E. Specifically, the linear movement is produced by action of pressure against a diaphragm as opposed by a yieldable spring... | 02/21/1989 |
| 4563570 | Battery powered cautery with improved protective cover arrangement A battery operated cautery includes a cylindrical housing configured to retain a voltage source, such as a plurality of batteries, and an electrically heated cautery tip carried by the front end of the housing and adapted to be selectively energized from ... | 01/07/1986 |
| 4253082 | Resistance disk A resistance disk that is so constructed that as the disk is rotated between a pair of fixed contact members, there is produced between the contacts a varying and random like resistance pattern of a character unobtainable with any other form of resistance... | 02/24/1981 |
| 4205296 | Rheostat trimmer A rheostat (10) has a disk-shaped base (11) that is slidably mounted between a pair of spaced terminal pins (12, 13). A resistance track (14) is disposed on top of the base (11) and is connected to a collector track (15) that is disposed around the circum... | 05/27/1980 |
| 4137518 | Resistance disk This invention relates generally to electrical resistors and particularly to a resistor disk and contact assembly wherein by reason of the structure of the disk, the radial resistance of the disk is randomly varied to produce a random-like resistance patt... | 01/30/1979 |
| 4086557 | Variable resistance pressure transducer A variable resistance pressure transducer having high resolution, a wide resistance range and usable in conjunction with a limited linear actuation movement is provided. The transducer basically comprises a helical resistance element and a circular ring s... | 04/25/1978 |
| 3978312 | Variable temperature electric cautery assembly A variable temperature portable cautery includes a housing configured to retain a voltage source, such as a plurality of batteries, and an electrically heated cautery tip carried by the front end of the housing in operative relation with each other. A man... | 08/31/1976 |
| 3970985 | Lineal controlled resistance device A device for controlling the amount of resistance in an electric circuit. A variable resistor is fixedly attached to a carriage slidably mounted on a pair of spaced apart guide rods within a hollow frame. A pinion gear is fixedly attached to a shaft of th... | 07/20/1976 |
| 3967231 | Variable resistor with plug-in resistance element An improved variable resistor wherein the resistance element therein is readily removable for repair or replacement through the front of the resistor without otherwise dismantling it. The resistance element is carried on a control shaft which is rotatably... | 06/29/1976 |
| 3950722 | Variable resistance control A variable resistance control employing a support plate and a resistance element having a pair of spaced resistance paths applied on a base and rotatably mounted on the support plate. A pair of terminals with integral contacts are secured to the support p... | 04/13/1976 |
