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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 5708553 | Automatic switching-off structure for protecting electronic device from burning An electronic device integrally formed with an automatic switching-off structure for protecting the device from overheating. At least one conducting lead of the electronic device is mechanically and electrically connected to its corresponding electrode by... | 01/13/1998 |
| 4739297 | Electric relay with a thermistor associated with a casing enclosing a thermally expandable mass and a rod actuating a rocker lever An electric relay has a casing enclosing a thermally expandable mass associated with a thermistor (PTC) as a heat source, connected to an electric excitation circuit. A rod projects from said casing to come in contact with a rocker lever which, in conjunc... | 04/19/1988 |
| 4379220 | Method of heating liquid A heater for heating liquids such as water in an aquarium comprises a water-impermeable housing including a heating section for immersion in the water. Within the heating section of the housing is a flexible, distributed planar heating element. The housin... | 04/05/1983 |
| 4276466 | Heater with distributed heating element A heater for heating liquids such as water in an aquarium comprises a water-impermeable housing including a heating section for immersion in the water. Within the heating section of the housing is a flexible, distributed planar heating element. The housin... | 06/30/1981 |
| 4254312 | Temperature compensated fill valve/pressure switch A device for filling a pneumatic tire and sensing the air pressure therein has a check valve disposed within a valve stem and a pressure sensing switch which is temperature compensated to adjust for air pressure changes within the tire due to changes in a... | 03/03/1981 |
| 4021643 | Immersion heater for aquariums A thermostatically controlled safety heater for upright immersion in an aquarium includes a housing with an axially extending, heat-transmitting tube forming a chamber in which an electric heating element is disposed in radially spaced relation from the t... | 05/03/1977 |
