Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 6121588 | Thermal actuation device An actuation device comprising: at least two thermal actuators (5A,5B) electrically supplied, each thermal actuator (5A,5B) comprising relevant thrust means (4A,6A,4B,6B) being movable to perform a predetermined stroke; at least a working means (12) moved by m... | 09/19/2000 |
| 5656986 | Bistable actuator device An actuator device varies its functional condition from a state of rest to a working state, both stable and has a body receiving a thermal actuator, an electric heater, electric contacting elements and a transmission shaft for the thrust generated by the ... | 08/12/1997 |
| 4785274 | Thermally-sensible overcurrent protective relay including automatic resetting mechanism A thermally-sensible overcurrent protective relay comprising a toggle mechanism operable in connection with the bending operation of a bimetal bendable in response to current flowing through a main circuit a normally-open contact having a normally-open fi... | 11/15/1988 |
| 4742190 | Device for selectively preventing one or more modes of actuating manual control members equipping an apparatus The invention provides a device for selectively preventing actuating modes of a manual control member equipping the face of the case of an apparatus and able to change over from a first position corresponding to a first function, to a second position corr... | 05/03/1988 |
| 4423400 | Control device to be mounted in a frame for operating the displacement of an arm and use of the device in particular as a switch A control device for operating the displacement of an arm between an on-position and an off-position, comprising a control member operating through a transmission element consisting of a link and a locking means movable between a locked position and an un... | 12/27/1983 |
| 4315233 | Device for shifting a double-throw contact arrangement A device for shifting a contact arrangement in a thermally operating protective relay having a make contact, a break contact, as well as a double-throw contact, provides for shifting the arrangement from self-locking to automatic resetting by shifting the... | 02/09/1982 |
