"The abolishment of pain in surgery is a chimera. It is absurd to go on seeking it...knife and pain are two words in surgery that must forever be associated in the consciousness of the patient."
Dr. Alfred Velpeau, French surgeon ; 1839
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| Number | Title | Issue Date |
| 7378934 | Negative rate switch methods and systems for resilient actuating device Methods and systems for actuating a negative rate switch. A negative rate switch comprising a plunger and a resilient actuator thereof can be provided, wherein a highest plunger force occurs at a free position and a lowest plunger force occurs at a full over travel ... | 05/27/2008 |
| 6512434 | Circuit breaker with shift guide A thermal overload open-phase tripping device includes in a case bimetals corresponding to different phases; a differential shifter mechanism composed of a push shifter and a pull shifter, linked to operating ends of the bimetals, and an interlocking plat... | 01/28/2003 |
| 6471135 | Adjustment and control unit for gas burner valves with bimetal rod-and-tube thermostat An adjustment and control unit for gas burner valves provided with a bimetal rod-and-tube thermostat which is arranged on a rocker supporting the flow control element of a valve. A translational motion actuator is arranged so as to push on the rocker, on ... | 10/29/2002 |
| 5894259 | Thermal trip unit with magnetic shield and circuit breaker incorporating same A solenoid type magnetic trip assembly for a molded case circuit breaker includes an armature biased against an adjustable stop by a tension spring to set the initial gap for the magnetic trip, so that the spring bias remains constant for the full range o... | 04/13/1999 |
| 5077537 | Thermostatic probe switch apparatus A probe thermostat is shown having a single, stamped metal channel having a first coefficient of expansion coupled to a rod having a second, different, coefficient of expansion. An electrically insulating block is mounted on the channel which in turn cant... | 12/31/1991 |
| 4754253 | Adjustable temperature thermostat A thermostatic switch is shown having a body supporting a temperature sensing probe formed of a rod of one thermal coefficient of expansion connected to a channel of a different thermal coefficient of expansion. The difference in expansion between the rod... | 06/28/1988 |
| 4604603 | Dual temperature thermostat A dual temperature probe-type thermostat is illustrated in which a rod and tube probe is mounted at one end with a swivel on the switch body. The swivel structure is simplified to provide a bearing member engaged and positioned by the rod during swiveling... | 08/05/1986 |
| 4374373 | Multiple contacts, snap-action, thermal switch A snap-action thermal switch adapted to be operated by an expansion element. The switch includes a switch reed pivotable between two switching positions, a switch spring exerting force components in a longitudinal direction and in a pivoting direction of ... | 02/15/1983 |
| 4107638 | Thermostat A thermostat useful for an appliance, which uses a snap action stressed-leaf spring having two stable stressed configurations for the making and breaking of a circuit. Stressing of the spring is provided by differential movement of parts of a heat probe.... | 08/15/1978 |
| 4090165 | Thermostat range limiter A device is disclosed which is easily installed in a standard thermostat mechanism to limit the range of temperature to which the thermostat may be adjusted. The device is a generally flat template which is internally installed in the thermostat and physi... | 05/16/1978 |
| 3999158 | Range limiter for a thermostat A thermostat having an ambient temperature responsive element, a switch mechanically coupled to the temperature responsive element for control thereby so as to cause reverse switch operations above and below a temperature setting, means for controlling th... | 12/21/1976 |