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Class Information
Number: 338/215
Name: Electrical resistors > With switch
Description: Subject matter wherein a switch is connected in series or parallel with the resistor for effectively connecting or disconnecting the resistor from the circuit; and not otherwise classifiable.










Patents under this class:

Patent Number Title Of Patent Date Issued
8604728 Method and apparatus for controlling dynamic braking on locomotives Dec. 10, 2013
8570139 Variable resister having resistance varying geometrically ratio and control method thereof Oct. 29, 2013
8534160 Retractable control device for domestic appliance Sep. 17, 2013
8362870 Impedance calibration circuit with uniform step heights Jan. 29, 2013
8253007 Potentiometer control for musical instruments Aug. 28, 2012
8018319 Foil-type switching element, in particular for use in collision detection systems Sep. 13, 2011
7642893 Array of independently-addressable resistors, and method for production thereof Jan. 5, 2010
6841745 Battery device Jan. 11, 2005
6774509 Electrical switch assembly Aug. 10, 2004
6653928 Dry load test apparatus Nov. 25, 2003
6593758 Built-in test system for aircraft indication switches Jul. 15, 2003
6079401 Single knob rotary oven control apparatus providing continuous and discrete control information Jun. 27, 2000
6069553 Blower speed control resistors for automotive or other service May. 30, 2000
5770993 Thermal fuse Jun. 23, 1998
5612664 Electronic circuit Mar. 18, 1997
5563573 Pseudo-random switched resistor Oct. 8, 1996
5457294 UHV breaker provided with resistances Oct. 10, 1995
5401923 Resistor-provided UHV breaker Mar. 28, 1995
5182538 Bimetal thermoswitch Jan. 26, 1993
4994634 Sheet switch Feb. 19, 1991
4940959 Reversible resistant device Jul. 10, 1990
4847587 Bimetal thermoswitch Jul. 11, 1989
4811167 Integrated circuit socket Mar. 7, 1989
4746784 Method of attaching a lead to a metal end cap of a safety fuse May. 24, 1988
4713531 Heating element for textiles Dec. 15, 1987
4675645 High-frequency selecting switch terminal Jun. 23, 1987
4553928 Switching device for photoflash unit Nov. 19, 1985
4533893 Monolithic fuse for rotating equipment Aug. 6, 1985
4528544 Control apparatus for variable speed reversible motor Jul. 9, 1985
4489291 Circuit breaker provided with parallel resistor Dec. 18, 1984
4487574 Switching device for photoflash unit Dec. 11, 1984
4380749 One-time electrically-activated switch Apr. 19, 1983
4274075 Electronic multi-range variable resistor Jun. 16, 1981
4227057 Apparatus for ascertaining the upper level of liquids in tanks or the like Oct. 7, 1980
4227236 Flexible body for use in liquid level indicating apparatus Oct. 7, 1980
4163964 Pneumatic or hydraulic pressure sensors with several thresholds of response Aug. 7, 1979
4156227 Jogging switch mechanism May. 22, 1979
4152688 Air flow switch May. 1, 1979
4128826 Electrical high-voltage apparatus Dec. 5, 1978
4006443 Composition resistor with an integral thermal fuse Feb. 1, 1977











 
 
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