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Pneumatic Shoe Lacing Apparatus
This invention provides a pneumatic shoe lacing apparatus for the pneumatic lacing of shoe.
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| Number | Title | Issue Date |
| 7174958 | Drill string member A drill-string member includes at least one grooved portion on an outer surface thereof. A pair of axially spaced-apart grooved portions are typically provided, with two such pairs axially spaced along the longitudinal length of the member. A plurality of grooves ar... | 02/13/2007 |
| 5857710 | Multi-cycle releasable connection A releasable connection between the lower end of a running string and a well tool that is subject to being stuck in a well includes inner and outer members movable telescopically between contracted and extended positions, a tension sleeve connecting the m... | 01/12/1999 |
| 5495902 | Coil tubing hydraulic jar device A hydraulic jar device for use in connection to coil tubing which consists of an elongate tube having an upper hammer sub, a kelly cylinder and a hydraulic cylinder with central restrictor. A lower sub connects to the bottom end of the hydraulic cylinder.... | 03/05/1996 |
| 4576229 | Device for facilitating release of stuck drill collars A device is disclosed which is to be incorporated into a drill string used for drilling in subterranean formations. The device includes a first member concentrically mounted with drill pipes disposed above the device and a second member concentrically mou... | 03/18/1986 |
| 4466621 | Rotary drill bit multiple seal assembly An improved seal assembly for utilization with earth boring drilling bits employing roller cutters. The improved seal is constructed utilizing two resilient O-rings or other resilient seals engaging opposing surfaces in the roller cutter and the corner fo... | 08/21/1984 |
| 4081043 | Hydraulic jars for bore hole drilling Hydraulic jar apparatus to be disposed in a drilling string used in drilling a well bore or other bore hole, embodying inner and outer telescopically arranged bodies, with a hammer on the inner body adapted to strike an anvil on the outer body, the bodies... | 03/28/1978 |
| 4007790 | Back-off apparatus and method for retrieving pipe from wells A new and improved apparatus and method for lowering the apparatus downwardly in a drill string on a wireline to releasably engage a recess in a threaded joint or collar of the drill string to prevent further downward movement of the apparatus and to ther... | 02/15/1977 |
