Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7329323 | Methods and systems for selectively connecting and disconnecting conductors in a fabric Methods and systems for selectively connecting and disconnecting conductors in a fabric are disclosed. First and second conductors are integrated into a fabric such that the conductors intersect at a crossover point. The conductors are bonded to each other at the cr... | 02/12/2008 |
| 7138612 | Electrical connection of flexible conductive strands in a flexible body A flexible body has a conductive resistance pathway which includes conductive resistance flexible strands of material connected in series between two supply bus flexible strands of material, and a temperature dependent variable resistance pathway with temperature de... | 11/21/2006 |
| 7064299 | Electrical connection of flexible conductive strands in a flexible body A flexible body has a conductive resistance pathway which includes conductive resistance flexible strands of material connected in series between two supply bus flexible strands of material, and a temperature dependent variable resistance pathway with temperature de... | 06/20/2006 |
| 6867395 | Variable flow thermostat and method for variably controlling engine temperature A variable flow thermostat, as applied to an internal combustion engine, provides a means for allowing the flow of coolant fluid from the engine block to the radiator to vary in response to the temperature of the engine coolant sensed at the engine block. The thermo... | 03/15/2005 |
| 6496097 | Dual circuit temperature controlled switch A temperature responsive switch includes a housing, an actuator arm for movement in response to temperature conditions, a movable contact, and an adjustable contact connected to a auxiliary terminal for completing an auxiliary circuit. The movable contact... | 12/17/2002 |
| 4558207 | Electric fluid heater having combined heating and flow control mechanism An apparatus for heating and controlling the flow rate of a fluid which includes a fluid inlet, a chamber communicating therewith, an outlet operatively associated with the chamber and an electric resistance heating element within the chamber provided wit... | 12/10/1985 |
| 4484050 | Electric cooking oven having a temperature sensing device with output compensation An electric cooking oven for use a normal cooking mode and defrost mode is provided which comprises a detector for detecting a temperature of a food body during cooking thereof, the detector comprising a thermistor which detachably attached to the food bo... | 11/20/1984 |
| 4338511 | Electronic thermostat equipped with an energy-saving device An energy-saving electronic thermostat operates by means of a single temperature probe. The rapid decrease in temperature of the probe when a window is opened causes the heating to be switched off or reduced by means of a comparator circuit combined with ... | 07/06/1982 |
| 4323764 | Control system and control device for controlling a heating unit and method of making and operating the same A control system for a heating unit that has controls for comparing a variable electrical signal that has a value in relation to the output temperature of the heating unit and a selected electrical signal that has a value in relation to a selected tempera... | 04/06/1982 |
| 4124793 | Aquarium water heater An aquarium water heater having a heater element energized by first and second silicon-controlled rectifiers connected in parallel in opposing conductive relation, one rectifier providing energy to the heater element on one-half cycle of alternating curre... | 11/07/1978 |
| 4109136 | Thermostat controlled flatiron In an electric flatiron with a soleplate and central upstanding boss and having a handle having a temperature adjusting lever in the front of the handle, an improvement is provided in the temperature regulating assembly that comprises a snap action thermo... | 08/22/1978 |
| 4096376 | Temperature control device An automatic device for closely held temperature control of a body of liquid via an electric heater, as for example via a liquid-immersed heater element. The control device provides an enclosed air space with shared exposure to ambient air and to air that... | 06/20/1978 |
