Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7097402 | Lock nut A lock nut comprising a solid nut body having a flange, from which a neck projection extends axially, being provided at its end surface with an annular shroud, from which at least two claws extend radially. ... | 08/29/2006 |
| 6905297 | Locking nut, bolt and clip systems and assemblies The locking nut and bolt system utilizes a bolt with thread having a plurality of notches generally longitudinally spaced in a predetermined pattern. Each notch has a lock face and an opposing slope. The locking unit carries one or more tines. The tine has a distal ... | 06/14/2005 |
| 6679663 | Locking nut, bolt and clip systems and assemblies The locking nut and bolt system utilizes a bolt with thread having a plurality of notches generally longitudinally spaced in a predetermined pattern. Each notch has a lock face and an opposing slope. The locking unit carries one or more tines. The tine ha... | 01/20/2004 |
| 6220803 | Self-locking and self-retained structural fastener A self-lock and self-retained structural fastener assembly (10) is disclosed. The fastener assembly (10) comprises a plate member (12) having an opening (14) and a pair of receivers (16, 18). A retainer (20) that has a threaded opening (22), a pair of opp... | 04/24/2001 |
| 6010289 | Locking nut, bolt and clip systems and assemblies The locking nut and bolt system utilizes a bolt with thread having a plurality of notches generally longitudinally spaced in a predetermined pattern. Each notch has a lock face and an opposing slope. The locking unit carries one or more tines. The tine ha... | 01/04/2000 |
| 5713708 | Fastener assembly including a self-locking ratchet nut A self-locking nut designed to work with a male thread's that have a slot, keyway or hole along their threads. A novel locking ring (13) placed in a cavity (23)in one end of the nut. One or more fingers (24) on the locking ring lock into a slot, recess, h... | 02/03/1998 |
| 5538378 | Self-locking threaded connecting device A self-locking threaded connecting device comprising a male component (11) with a recess locking thread type (31) and a female component (12) with a flexible thread segment (21). Tension from the alignment of the internal flexible thread segment urges pro... | 07/23/1996 |
| 4168731 | Locking nut and bolt assembly Disclosed is a nut having an internally threaded cylindrical inner wall portion joined at one end by a connecting portion to an outer wall portion and separated by an annular volume. The outer wall portion possesses resilient reentrant fingers located opp... | 09/25/1979 |
| 4137959 | Self-locking knob and stud assembly A self-locking knob and stud assembly includes a self-locking knob consisting of an internally threaded knob with an apertured spring retainer clip slidably received in a transverse slot provided in the knob, the aperture through the retainer clip being o... | 02/06/1979 |
