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Class Information
Number: 290/1E
Name: Prime-mover dynamo plants > Miscellaneous > Spring motor
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7589428 |
Electro gravity plates for generating electricity from passage of vehicles over the plates |
Sep. 15, 2009 |
| 7554212 |
Mechanically powered cordless pointing device |
Jun. 30, 2009 |
| 7476984 |
Spring activated energy transducer generating A/C electricity from reciprocating natural forces |
Jan. 13, 2009 |
| 7432608 |
Generator and power supply for use therein |
Oct. 7, 2008 |
| 7408266 |
Shock-absorbable electricity-producing apparatus |
Aug. 5, 2008 |
| 7402915 |
Pedal generator |
Jul. 22, 2008 |
| 7304398 |
Spring activated energy transducer generating A/C electricity from natural forces-frictionless magnetic plate |
Dec. 4, 2007 |
| 7276805 |
Manual-powered generator and assemblies therewith |
Oct. 2, 2007 |
| 7157802 |
Electrical power source |
Jan. 2, 2007 |
| 7148583 |
Electrical power generators |
Dec. 12, 2006 |
| 7129592 |
Portable, human-powered electrical energy source |
Oct. 31, 2006 |
| 7107960 |
Starter assist device for an engine |
Sep. 19, 2006 |
| 7109594 |
Cord reel box with recharging unit |
Sep. 19, 2006 |
| 7049708 |
Mobile electrical power source |
May. 23, 2006 |
| 6949840 |
Apparatus for generating power from passing vehicular traffic |
Sep. 27, 2005 |
| 6930403 |
Mobile electrical power source |
Aug. 16, 2005 |
| 6924571 |
Spring-driven generator |
Aug. 2, 2005 |
| 6858951 |
Wire rewinding box with recharge unit |
Feb. 22, 2005 |
| 6707191 |
Clockspring generator |
Mar. 16, 2004 |
| 6483276 |
Electronic device with variable chopping signal and duty ratio selection for strong braking |
Nov. 19, 2002 |
| 6291900 |
Electrical energy management for manually powered devices |
Sep. 18, 2001 |
| 6281594 |
Human powered electrical generation system |
Aug. 28, 2001 |
| 6236118 |
Method of generating electricity |
May. 22, 2001 |
| 5917310 |
Spring operated current generator for supplying controlled electric current to a load |
Jun. 29, 1999 |
| 5880532 |
Wind-up power source with spring motor and vehicle incorporating same |
Mar. 9, 1999 |
| 5668414 |
Spring driven electricity generator with a control circuit to regulate the release of energy in the spring |
Sep. 16, 1997 |
| 4799003 |
Mechanical-to-electrical energy converter |
Jan. 17, 1989 |
| 4746806 |
Manually operated electrical generator apparatus |
May. 24, 1988 |
| 4524283 |
Energy converter |
Jun. 18, 1985 |
| 4287428 |
Automatic spring powered battery charging device |
Sep. 1, 1981 |
| 4169992 |
Feedback speed control of spring powered generator |
Oct. 2, 1979 |
| 4131842 |
Automatic spring-powered battery charging device |
Dec. 26, 1978 |
| 3970939 |
Signal generating and transmitting apparatus |
Jul. 20, 1976 |
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