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 |
| 7102482 | Relay and cross-connect The present invention relates to a fuse-relay including a first pole (1, 11, 21, 31, 81) and a second pole (2, 12, 22, 32, 82). According to the invention the fuse-relay includes a resilient device (5, 18, 27, 37, 87) that is held in an elastica... | 09/05/2006 |
| 6127913 | Thermal protector A bimetal 40 is secured at a holding portion 40b to a fixed pin 52 and a snap portion 40a is supported by a support portion 12a. The free end 40a" of the snap portion 40a comes in contact with a movable contact plate 30 to thereby rock the plate 30. The d... | 10/03/2000 |
| 5659285 | Double safety thermostat having movable contacts disposed in both ends of a resilient plate An object of the present invention is to provide a thermostat including a protection circuit for protecting a circuit even if contacts of the thermostat are welded. Movable contacts are disposed in both ends of a resilient plate deformed by a thermally re... | 08/19/1997 |
| 5612662 | Thermal fuse and method for its activation A thermal fuse includes a leaf spring formed of a narrow sheet metal strip. The leaf spring has ends and at least two contact points at the ends. At least one of the contact points is a soldering point for connection with corresponding circuit contacts of... | 03/18/1997 |
| 4050044 | Electrical switch An electrical switch comprising a housing, and spring supported in the housing. The spring is made from resilient, flat material and carries a contact at each end thereof, each contact being adapted to engage a respective counter-contact carried by the ho... | 09/20/1977 |
| 3968469 | Detector for radiant heat A detector for radiant heat has a housing with means movable therein between positions for controlling an electrical circuit. A pair of elongate metallic strips are disposed generally in overlaying relation and have adjacent portions thereof respectively ... | 07/06/1976 |
| 3959691 | Motor protector The disclosure relates to a manual reset motor protector device having an arm of a nickel-titanium metal alloy or the like supporting an electrical contact and having a spring arm supporting a second electrical contact, both of these arms being mounted on... | 05/25/1976 |
