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| Number | Title | Issue Date |
| 7231739 | Inflatable component connector An inflatable device that includes a inflatable component and a base inflatable component. The inflatable component is releasably connected to the base inflatable component by a component connector. The component connector includes a base and a cap, wherein the cap ... | 06/19/2007 |
| 7052213 | Hydraulic food cutter with improved accelerator tube assembly A hydraulic accelerator tube is provided for an improved hydraulic food cutting assembly. The accelerator tube is formed of polyurethane having a durometer hardness within the range of 20–70. It is encased within a clamshell housing which, when installed in the fo... | 05/30/2006 |
| 6626675 | Multiple activity center A multiple activity apparatus is disclosed for educational, therapeutic, or recreational use comprising three rectangular frame members joined at abutting ends in a triangular configuration having open triangular ends. The triangular configuration has a b... | 09/30/2003 |
| 5217406 | Mine ventilation tubing system and method of installation Mine ventilation tubing system for use in a mine tunnel including a plurality of tubing sections having, in transverse cross section, three sides connected together by three radiused corners, one of the corners having a substantially larger radius than th... | 06/08/1993 |
| 5104194 | Continuous miner with improved duct system and method of increasing duct cross section A self-propelled continuous mining machine which includes a mobile frame assembly having a material dislodging device, and a conveying system. A dust collecting system is positioned on the mobile frame assembly for inducing a flow of air through a duct sy... | 04/14/1992 |
| 4632462 | Continuous miner-mounted mine ventilation system In a continuous mining machine equipped with a sprayfan ventilation system for methane and dust control, the sprayfan ventilation system including a plurality of sprayfans positioned on the front portion of the mining machine to direct intake air to and a... | 12/30/1986 |
| 4625631 | Method and apparatus for extending ventilation ductwork An apparatus and method for advancing extendable ventilation ductwork in an underground facility is disclosed wherein a mechanical cable and pulley system is utilized in conjunction with a support swivel. The support swivel permits support clips to advanc... | 12/02/1986 |
| 4361079 | Apparatus for extending ventilating conduits Apparatus for continuously extending ventilating conduits in tunnelling or mining environments includes a tubular store to which a funnel guide is releasably connected. A folded flexible ventilating pipe is received on the store and fastening means are pr... | 11/30/1982 |
| 4344357 | Apparatus for extending ventilating conduits Apparatus for continuously extending ventilating conduits in tunnelling or mining environments includes a tubular ventilating pipe store to one end of which a nozzle is releasably connected and to the other end of which a nozzle is releasably connected an... | 08/17/1982 |
| 4235163 | Mine face ventilation system A mine face ventilating method and apparatus are disclosed which serve to supply fresh air from a ventilated crosscut. A duct system containing a blower draws air from the crosscut and expels a jet of air out of a duct in the tunnel. Arcuately shaped trou... | 11/25/1980 |
