Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 6993821 | Manufacturing cell using tooling apparatus A manufacturing cell having a plurality of work stations, where at least one of the work station comprises a metalworking machine, and where at least one metalworking machine is provided with a modular tooling apparatus. The modular tooling apparatus consists of a b... | 02/07/2006 |
| 6929254 | Swing-arm clamp A swing-arm clamp is provided. The swing-arm clamp has a locating member that is movable in concert with a rod which is disposed in the clamp. The locating member engages a guide when the arm is located in a first position and separates from the guide when in a seco... | 08/16/2005 |
| 6524174 | Clamp for connecting/disconnecting a rotary head to/from a spindle in apparatus for manufacturing a semiconductor device An apparatus for manufacturing a semiconductor device includes a rotatable spindle, a head detachably connected to the spindle, and a clamp for clamping outer circumferential surfaces of the spindle and the head to one another so that the head may be driv... | 02/25/2003 |
| 5247846 | Quick disconnectable screw device A quick-disconnectable device with a screw piece, a first threaded part and a second threaded part, the threaded of which fits with the first threaded part, wherein the screw piece has a straight guide for the first threaded part, and the screw piece has ... | 09/28/1993 |
| 4432538 | Machine tool clamp A machine tool clamp includes an elongated clamping member with its mid-section anchored at an adjustably spaced distance above a base plate. The front end of the clamping member is adapted to clamp a work piece to a machine tool work platform. The rear e... | 02/21/1984 |
