Famous Patents
Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 6443795 | Transmission chain for toys A transmission chain includes a plurality of unitary chain links, each of which has parallel first and second side plates, first and second connecting pins, first and second pivot pins, and first and second pivot seats. The first and second pivot pins of ... | 09/03/2002 |
| 6334828 | Power transmitting silent chain apparatus A power transmitting silent chain apparatus comprises a silent chain and a sprocket. The silent chain is comprised of a plurality of link plates interconnected by connector pins. Each link plate has a pair of teeth. The sprocket has a plurality of involut... | 01/01/2002 |
| 5288278 | Bicycle chain A bicycle chain having link plates connected to be oscillatable relative to one another within a predetermined range of flexion. To determine the range of flexion, outer link plates include engaged members, and inner link plates include engaging members f... | 02/22/1994 |
| 4750325 | Chain links A chain link having a pair of curved extremities and being generally in the shape of an elongated loop. The loop defines two sides which converge towards the middle of the link where the two sides are rigidly jointed together, as by a weld, thereby formin... | 06/14/1988 |
| 4610647 | Chain link connection A connection for use with chain links includes a main body portion which has at least one and preferably two support bars extending outwardly from each side of the main body portion, a recess or groove in the support bar adjacent its distal end spaced fro... | 09/09/1986 |
| 4428740 | Infinitely variable ratio transmission apparatus A variable ratio transmission apparatus for converting an input torque at a first RPM to an output torque at a second RPM includes a pair of driving discs disposed on an input drive shaft and in spaced parallel relationship thereto, a pair of driven discs... | 01/31/1984 |
