Bizarre Patents
Nicotine Containing Dental Floss
Keep away cavities and cancer at the same time.
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 |
| 8070394 | Versatile grout bag type of underground support A support assembly (1) is provided for the roof or hanging wall (36, 114) of an underground mine. The assembly comprises at least one support elongate (30) and a grout bag (2, 60, 80, 90, 102, 108, 120) used in association therewith and w... | 12/06/2011 |
| 7232103 | Load-bearing pressurized liquid column A load-bearing, pressurized-fluid column apparatus and method for supporting a load or mine ceiling with respect to a support surface or mine floor includes an elongated, flexible sleeve and bladder retain a substantially incompressible liquid. The sleeve and bladde... | 06/19/2007 |
| 7044686 | Apparatus and method for supporting a structure with a pier A pier assembly (2, 60) is provided that utilizes a rotatable shelf (12, 70) structure to place a screw jack assembly (15) under a footing (28) of a foundation. ... | 05/16/2006 |
| 7004686 | Rock bolts with expandable element In a method and device for drilling, in particular impact drilling or rotary percussion drilling, a hole in soil or rock material and forming an anchorage in the hole, wherein a bore hole is formed by the introduction of a drill bit, it is provided that the drill ro... | 02/28/2006 |
| 6910834 | Mine prop A mine prop is comprised of an elongate tube having a slenderness ratio that would generally allow buckling or kneeling of the elongate tube when exposed to a sufficient axial force. A plurality of elongate support members having a length less than the elongate tube... | 06/28/2005 |
| 6637159 | Load-bearing pressurized liquid column A load-bearing, pressurized-fluid column apparatus and method for supporting a load or mine ceiling with respect to a support surface or mine floor includes an elongated, flexible sleeve retains a substantially incompressible liquid. The elongated, flexib... | 10/28/2003 |
| 6558085 | Mine support and method of forming the same A method of forming a mine support capable of bearing an axial compressive load involves providing an outer container arranged in use to define a base. There is located within the container a tube of a flexible material divided by dividing walls of a flex... | 05/06/2003 |
| 6547492 | Inflatable mine support An inflatable bag for use in a mine support has an inlet for the admission of a pumpable load bearing material such as a cementitious grout and an outlet for the air. The outlet is provided with a valve comprising a porous element the pores of which are c... | 04/15/2003 |
| 6394707 | Yieldable mine roof support A mine roof support designed to extend vertically in a mine passageway. The support includes a containment structure having at least two telescoping containment members freely telescopically movable relative to one another, and a filler material introduci... | 05/28/2002 |
| 5669739 | Prestressing of mine props The mine prop prestressing device (10) has a tube (12), a cup-shaped member (14) inside the tube which has a base (18) and a cylindrical side wall (20) fixed internally to the wall of the tube. A counter-member is also fixed to the tube in opposition to t... | 09/23/1997 |
| 5615979 | Mine support bag A mine support bag comprises an inner fabric tube of selected length and selected circumference having an inner surface and outer surface. A first fabric sheet is laminated to the outer surface on the one side of the tube, the first fabric sheet having a ... | 04/01/1997 |
| 5454866 | Grout composition This invention relates to a grout composition comprising a Portland cement, a high alumina cement, anhydrous calcium sulphate, an effective amount of a lithium salt and an effective amount of a strong base. According to another aspect of the invention, in... | 10/03/1995 |
| 5435670 | Spacer assembly and method The invention concerns a method and apparatus for providing yielding support for a hanging wall above a footwall in a mine working. A support assembly is installed between the hanging wall and the footwall, the assembly including a spacer (10), a pack (30... | 07/25/1995 |
| 5427476 | Mine prop headboard The mine prop headboard (10) is used to support an inflatable grout bag (44) and is located transversely on an end of an elongate mine prop (12) which is in use installed upright between a hanging wall and a footwall in a mine working. The headboard inclu... | 06/27/1995 |
| 5308196 | Yieldable confined core mine roof support A yieldable confined core mine roof support including a container and a filler placed within the container. The container is yieldable and the filler is compressible. The combination of a filler within a container produces a mine roof support which is yie... | 05/03/1994 |
| 5288178 | Preload headboard for an elongate prop The invention concerns a prop headboard (10) which is used in conjunction with an elongate mine prop. The headboard supports a preload bag (50) inflatable with a settable grout. The headboard is composed of a headboard member (12) and a pot (34). The head... | 02/22/1994 |
| 5149228 | Prop preloading apparatus The prop preloading apparatus comprises a frame and means for supporting the frame on an end of an elongate prop in a manner permitting at least limited swivelling movement of the frame relative to the prop about at least one axis transverse to the axis o... | 09/22/1992 |
| 5143340 | Load support A support between the floor (22) and the roof (24) of e.g. a mine stope, is made by using an inflatable container comprising an inner bag (10), received in an outer bag (12). An inlet valve (14) extends through both bags as does a relatively higher pressu... | 09/01/1992 |
| 4906133 | Mining apparatus for utilization in recovering coal A mining apparatus for utilization in recovering coal includes a series of four cooperating legs: a right fore leg, left fore leg, right rear leg and left rear leg. Each leg is formed from a box-like shield. An inflatable bag is provided in each leg. When... | 03/06/1990 |
| 4773792 | System for stabilizing structural elements A system for stabilizing a first structural element relative to a second structural element wherein a flexible container containing a foaming agent is positioned between the structural elements, the agent is expanded within the container and partially mig... | 09/27/1988 |
| 4490076 | Underground support devices An underground support, e.g. for the roof of a mine, has a roof engaging canopy 10 which can be raised and lowered in a controlled manner by hydraulic legs 14. Inflatable flexible membrane means, for example in the form of bags 12, are provided on the upp... | 12/25/1984 |
| 4465405 | Method and device for the backfilling of roadway supports in mine and tunnel construction with the aid of support hoses having a hardening filler The invention relates to a process and device for backfilling of a roadway structure of mine and tunnel construction utilizing support hoses filled with a hardening filler. The hoses, when empty, are supported by the roadway support, after being put in pl... | 08/14/1984 |
| 4195111 | Load supporting means and the formation thereof A displaceable load supporting cell for supporting a load. The cell comprises at least one compacted layer of particulate material compacted under a pressure of at least 800 kPa. The cell has a height less than its minimum lateral dimension. The cell incl... | 03/25/1980 |
| 4167361 | Temporary mine roof prop The base member of a mine roof prop is provided with a closed lower chamber and an adjoining open-top upper chamber in which the lower end of a post is slidably mounted, with means at the upper end of the post for engaging a mine roof. A body of liquid is... | 09/11/1979 |
| 4124985 | Collapsible tunnel liner section and method of lining a tunnel A collapsible concrete tunnel liner section formed from a number of arcuate segments each connected together by hinges to form a closed loop. In collapsed condition the segments are arranged in a compact stack having a cross section less in its maximum di... | 11/14/1978 |
| 4120164 | Underground roadway or tunnel support A method and apparatus is provided for supporting an underground mine roadway or tunnel having a series of spaced rigid support members installed along the roadway or tunnel, the rigid support members being erected in turn adjacent to newly exposed mine o... | 10/17/1978 |
| 4102138 | Method for closing off a mine gallery especially for use to prevent spreading of underground explosions A device for closing off a mine gallery, especially for use to prevent spreading or underground explosions, in which a bag of flexible substantially airtight material is first inflated with a gas under pressure, for instance air, until the inflated bag en... | 07/25/1978 |
| 4072015 | Borehole aerostatic ground support system A method and the apparatus for implementing the method to provide temporary ground support in a mine. After an auger or other type of hole has been bored in an underground mine, at least one inflatable bladder with a fluid conduit therethrough is inserted... | 02/07/1978 |
| 4072018 | Tunnel support structure and method In this invention there is taught the use of air tubes or fluid-filled containers to define permanent hollow tubular space within a body of solidified fill material placed in a mining excavation. The fill uses a mixture of solids and liquids with the addi... | 02/07/1978 |
| 4036024 | Device for closing off a mine gallery especially for use to prevent spreading of underground explosions A device for closing off a mine gallery, especially for use to prevent spreading of underground explosions, in which a bag of flexible substantially airtight material is first inflated with a gas under pressure, for instance air, until the inflated bag en... | 07/19/1977 |
| 4023372 | Means to seal-off portions of underground mines and the like An apparatus for sealably closing off or separating portions of a mine for safety or other reasons including an inflatable member having a size and shape which corresponds substantially to the cross-sectional size and shape of a mine passage, tunnel or th... | 05/17/1977 |
| 3978675 | Mine roof support equipment Roof support equipment for a mining machine comprises a canopy supporting plurality of deformable, inflatable bags which can be temporarily deflated to allow advance of the equipment. The canopy is mounted on a movable base which may be constituted by the... | 09/07/1976 |
| 3948057 | Portable mine stopping device A ribbed sheet of flowable material is positionable on the sides and roof of an air passage of a mine for sealing irregularities in the sides and roof and extends across the air passage to prevent the flow of air therealong. A plurality of air cells are p... | 04/06/1976 |
| 3937025 | Inflatable envelope systems for use in excavations This invention pertains to inflatable envelope apparatus or pressurized container structures and associated methods to be used together with slurry products of concentrated or metallurgical plants in backfilling and other operations involving subterranean... | 02/10/1976 |
