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.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6845720 | Conveyor shock absorber A shock absorbing tow bar for connecting between a drive trolley and a load carrying trolley of a conveyor system. The tow bar includes a pair of tubes that reciprocate relative to each other. A plunger is located within a first of the tubes and attached to a second... | 01/25/2005 |
| 5529194 | Variable angle friction clutch mechanism for a draft gear assembly A draft gear assembly having a variable angle friction clutch mechanism is provided. Such assembly includes a housing member having a compressible cushioning element disposed adjacent a closed end thereof. A seat is disposed between one end of the compres... | 06/25/1996 |
| 5443170 | Variable angle friction clutch mechanism for a draft gear assembly A draft gear assembly having a variable angle friction clutch mechanism is provided. The assembly includes a housing member having a compressible cushioning element disposed adjacent a closed end thereof. A seat member is disposed between one end of the c... | 08/22/1995 |
