Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 6502648 | 360 degree clutch collar An adjustment mechanism for a clutch. The adjustment mechanism includes an annular adjustment structure having an adjustment profile with a ramp section, a first adjustment segment, a last adjustment segment and a plurality of intermediate adjustment segm... | 01/07/2003 |
| 4799833 | Clutch for positive feed drill The invention relates to a torque-limiting clutch for use in combination with a positive feed drill that has a reversible motor and reversible driving means. A preferred use of the clutch is in combination with a drill that has a reversible motor rapid ad... | 01/24/1989 |
| 4614462 | Rotation device for a foundation pile A rotation device for settling a pre-molded foundation pile into the earth by imparting axial loading thereto and by imparting torque of approximately equal magnitudes to both the upper- and lowermost portions of the foundation pile. A clutch assembly com... | 09/30/1986 |
| 4546834 | Mechanical quill having selective braking capability A mechanical quill having selective braking capability, achieved by a pneumatic cylinder (110) mounted to one motor (80) for selectively driving a braking member (120) into a braking material (104) coupled to a motor armature (84). This braking member (12... | 10/15/1985 |
| 4538942 | Positive feed drill with stop control A positive feed drill having a spindle drive gear train and a spindle feed gear train, coupled to the drive gear train by side teeth on respective drive and feed coupling gears mounted on a common shaft, is provided with a spring between the feed coupling... | 09/03/1985 |
| 4453868 | Air-operated, hydraulically-controlled drillmotor Air-operated, hydraulically controlled portable drill-countersink tool automatically clamping to workpiece. A spindle attached to drill is connected to gearing from a motor by helical splines to withdraw the spindle, to counter spindle-feeding force, resp... | 06/12/1984 |
| 4421183 | Flexible drive apparatus for boring lateral bore holes from well Apparatus is provided for penetrating boreholes in oil wells. The apparatus includes a shaft rotatable by power means. First means may be operatively associated with the shaft and a rod to obtain a rotation of the rod by the shaft. Second means obtain a l... | 12/20/1983 |
| 4241623 | Vertical drive mechanism for a cutting apparatus A vertical drive mechanism is provided for a cutting apparatus. The cutting pparatus can be used for in place machining of a valve seat which may include an annular turntable adapted to be rotatably mounted on the valve above the valve seat. A feed shaft i... | 12/30/1980 |
| 4201271 | Quill drive with variable feed A quill drive comprising a housing adapted for mounting on machine tools. A quill is slidably mounted in a longitudinal bore in the housing, and is longitudinally positioned by a ball screw. The ball screw is driven for longitudinal positioning of the qui... | 05/06/1980 |
| 3955629 | Mechanical quill feed unit This application discloses an improved quill feed unit of the type used in automatic or semi-automatic machines for holding and advancing the tool during the machining operation, wherein the rapid advance, feed, and rapid retract movements present in each... | 05/11/1976 |
