Bizarre Patents
Hands free towel carrying system
A hands free towel carrying system for coupling a towel to a user to prevent loss, theft or contamination.
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 |
| 7775748 | Shield support A shield support for underground mining has a slider and a roof bar between which a ram is arranged, with an inclination detector being provided with which the inclination of the roof bar can be measured. ... | 08/17/2010 |
| 7740421 | Arrangement for the admission of pressurized water to spray systems A water system for the admission of pressurized water to spray systems arranged on a powered support assembly for underground mining, having at least one spray system for plow or shearer track spraying and having at least one further spray system for goaf space spra... | 06/22/2010 |
| 7428861 | Valve for hydraulic props of shield-type support frames, and shield-type support frame The invention relates to a valve 120, especially a check valve, for hydraulic plungers (3) of shield-type support frames in underground mining with a valve housing 121 and a switchable valve insert received therein, connections 126-129... | 09/30/2008 |
| 7416369 | Timbering and walling control for controlling the movements of timbering and walling units in the coal face of a mine A longwall support control for controlling the movements of longwall support units in the longwall of a mine that includes a central control system and a plurality of control units, of which a separate control unit (mining shield control device) is locally and opera... | 08/26/2008 |
| 7237983 | Hydraulic shield support A hydraulic shield support is disclosed with at least two adjustable-length hydraulic props supporting a dedicated shield, which are connected through a control bank to a hydraulic fluid supply and borne on base shoes, and to which a pressure in excess of the pressu... | 07/03/2007 |
| 7177709 | Controller for underground mining A controller is disclosed for control operations in underground mining, especially for controllers to control support shields. The controller utilizes a central unit with a microprocessor and assigned, programmable memory devices for the storage and processing of so... | 02/13/2007 |
| 6957166 | Method and apparatus for load rate monitoring A system for real-time monitoring of the dynamic loading rate on support systems used in underground mines and other situations is provided. The load rate monitoring apparatus uses a programmable microcontroller to monitor and calculate the loading rates on the supp... | 10/18/2005 |
| 6945738 | Method and apparatus for safety protection of temporary roof support Embodiments of the present invention are directed to a method and apparatus for safety protection control of temporary roof support. In one embodiment, a temporary roof support has a load sensing member. In another embodiment, a beam structure of temporary roof supp... | 09/20/2005 |
| 6942301 | Method for boring and placing bolts for imbedding adhesively and device for carrying out this method A method and device for drilling and setting adhesive anchor bolts close to the mine face during the cutting operation of a tunneling or mining machine which is capable of being displaced on a traveling mechanism and includes a cutting cylinder or cutting head rotat... | 09/13/2005 |
| 6857705 | Mining machine and method A control system for a mining machine which moves in passes across a seam to be mined using absolute coordinates is disclosed. The machine is carried on rail and co-ordinates of the rail are measured along the length of rail. The rail is then moved to a new position... | 02/22/2005 |
| 6361119 | Mining control system for adjusting the advance of mining tools A mining control system for adjusting the advance of the working tools of a mining machine with respect to working depth and/or working height connects to a detection device that is for recognizing the rock being mined and is carried along by the mining m... | 03/26/2002 |
| 6257962 | Apparatus and methods for forming hollow-ground knife blades Hollow-ground surfaces are simultaneously formed along opposite sides of a knife blade blank by passing the knife blade blank between a pair of grinding wheels. The grinding wheels carry grinding belts about idler pulleys. The idler pulleys are adjustable... | 07/10/2001 |
| 6248705 | Stable perfumed bleaching compositions Stable, perfumed, highly acidic liquid compositions are disclosed which comprise a source of active oxygen, a surfactant and a cyclic terpene/sesquiterpene compound (e.g. eucalyptol). Said compositions are particularly suitable to clean hard surfaces like... | 06/19/2001 |
| 5741092 | Cable bolt driver A cable mine roof bolt driver is disclosed for rotating a cable mine roof bolt in resin grouted applications. The bolt driver includes a body having a front face and a rear face. A cable receiving bore is positioned within the body extending into the body... | 04/21/1998 |
| 5454669 | Yield valve A yield valve comprises a valve body, a first inlet port, an outlet port, a valve seat, and a valve member movable between a first position in which it cooperates with the valve seat to prevent fluid communication between the inlet port and the outlet por... | 10/03/1995 |
| 5423638 | Mine roof supports A mine roof support having means for monitoring the angles made by the canopy 11 and the base 10 with respect to a datum. The angular information may be gathered in a number of different ways and the information used to control subsequent movements of the... | 06/13/1995 |
| 5401123 | Control device for mine-roof support The control device is adapted to be inserted between the control valves of a pilot device and the pressure-medium consumers (hydraulic prop and hydraulic working cylinder) in an hydraulic self-advancing mine-roof support and is connected to a pressure-med... | 03/28/1995 |
| 5362133 | Method of mining coal seams at a defined preset depth of cutting during ploughing with a cutter In a method of mining coal seams using a ploughing cutter, a longwall conveyor extending along the coal face is moved forwards by the extension of self-advancing cylinders, the advance being controlled in dependence on a piston stroke of a respective self... | 11/08/1994 |
| 5275469 | Method of working coal seams to a defined preset depth of cutting during ploughing with a cutter A method of working coal seams to a defined preset cutting depth during ploughing with a cutter, a face conveyor moving along a face behind the cutter being advanced by the defined preset cutting depth and this advance being made by extension of self-adva... | 01/04/1994 |
| 5234256 | Cutting apparatus for mining operations with automatic control A cutting machine for mining minerals from a seam thereof, the machine executing reciprocal movements parallel to the face of the seam and being provided with switches for generating signals indicative of the direction of movement of the machine for contr... | 08/10/1993 |
| 5222838 | Power mine door system A mine door system including a door frame to be installed in a mine passageway to define a generally rectangular doorway. A mine door is defined by a pair of generally rectangular door leafs which are hinged on the door frame at opposite sides of the door... | 06/29/1993 |
| 5137336 | Process for the automated winning of mineral, such as coal, in a longwall working A process for automatic ploughing during the winning of coal and the like in a longwall working with a hydraulic advancing lining with individual support units controlled by an electro-hydraulic control means. A plough guide is shifted automatically in st... | 08/11/1992 |
| 5135264 | Flow coupling with frangible pressure sensitive holding member to allow venting A through flow coupler comprises two parts having intercommunicating passages therein so that fluid can flow through the two parts. A sealing member provides a fluid tight seal between the two parts when the two parts are held together in a sealed conditi... | 08/04/1992 |
| 5110187 | Apparatus for the mining of mineral matter, especially coal A mining apparatus of the type in which a mining machine excavates a mining face, especially a coal face in a subterranean mining application, and has a plurality of emitters of electromagnetic waves of different character diverging toward receivers on th... | 05/05/1992 |
| 5073067 | Mine roof support A mine roof support comprises a canopy, a base section, hydraulic props for raising and lowering the canopy relative to the base section, a hydraulic valve for supplying hydraulic fluid under pressure to the props via a check valve, and a yield valve conn... | 12/17/1991 |
| 5062033 | Electro-hydraulic control system for a mineral mining installation An electro-hydraulic control system for a mineral mining installation has a plurality of control units (4) sub-divided into operational groups (I, II, III) with associated roof supports. Each group has its own power source (5) and power at an intrinsicall... | 10/29/1991 |
| 5060556 | Arrangement for emergency operation of hydraulic appliance in an electro-hydraulically controlled mineral mining installation An electro-hydraulic control system for a mineral mining installation has a series of valve blocks, each contain a number of valves which are operated in dependence on electrical signals to cause hydraulic appliances of roof supports to operate. To allow ... | 10/29/1991 |
| 5029943 | Apparatus for transmitting data Apparatus for transmitting data relating to a mining machine in a longwall mining operation, comprising a data collection device mountable on a mining machine for collecting data relating to the machine, a data transmission device also mountable on the mi... | 07/09/1991 |
| 5026218 | Temporary roof support cylinder A hydraulic temporary mine roof support cylinder is disclosed. The support cylinder includes an outer housing and a coaxial intermediate housing member and inner cylinder. A downwardly extending piston is provided between the outer housing and intermediat... | 06/25/1991 |
| 5017051 | Electrohydraulic control means for hydraulic self-advancing support units A control means for hydraulic self-advancing support units for underground working, comprising at least one electrohydraulic control device comprising an electric circuit for energizing electromagnets which actuate hydraulic valves, a command keyboard con... | 05/21/1991 |
| 5000622 | Shaking control unit for a hydraulic cylinder A shaking control unit for a hydraulic cylinder, wherein a first predetermined pressure is admitted to the piston space of the cylinder through a first hydraulic line. A three/two-way valve connects in its zero position a second hydraulic line to a return... | 03/19/1991 |
| 4964675 | Method of electro-hydraulic control of longwall mine units A method of electro-hydraulic control of the cutting and self-advancing mine-roof support units in an automated longwall is carried out in dependence on the measured lengths to which the rams pushing the support are extended, with extraction by the cutter... | 10/23/1990 |
| 4957327 | Methods of translating a face support Methods are provided for translating a face support comprising a plurality of support units arranged side-by-side at an initial position. In the first embodiment, a first pair of alternately positioned support units are moved a predetermined distance from... | 09/18/1990 |
| 4946316 | Method and device for moving a shield-type support trestle A method and device is provided for the moving of a shield-type support trestle 1 having stamps 4, 5 arranged between a roof pressure cap 3 and a lying skid 2, a pushing ram 6 is in the lying skid 2, and control valves 11, 12, 13, 14 for controlling the d... | 08/07/1990 |
| 4936714 | Valve devices for use with mining equipment A pressure-relief valve device employs a connector welded to the base of mining equipment equipment such as an hydraulic prop, so as to communicate with the pressure fluid in a working chamber thereof. A housing is screwed into the connector and the conne... | 06/26/1990 |
| 4913499 | Equipment and method for measuring convergence A transducer is placed in a telescopic strut and connected to a roof cam and a floor cam. The cams are pivoted to a roof support and a constant load is applied to the cams by a gas spring. As convergence takes place a transducer in the telescopic strut re... | 04/03/1990 |
| 4907918 | Shaking control unit for a hydraulic cylinder A shaking control unit for a hydraulic cylinder, wherein a first predetermined pressure is admitted to the piston space of the cylinder through a first hydraulic line. A three/two-way valve connects in its zero position a second hydraulic line to a return... | 03/13/1990 |
| 4906143 | Electro-hydraulic control systems An electro-hydraulic control system has a valve unit allocated to a roof support (support shield, support trestle or the like) and equipped with electromagnetic valves. The unit is controlled by a control unit via a cable which includes two current supply... | 03/06/1990 |
| 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 |
| 4900091 | Electrohydraulic coal-mining system A mining system comprises a laterally deflectable segmented conveyor extending longitudinally along a longitudinal face from which material is to be cut, a mining machine displaceable longitudinally along the conveyor and engageable with the face to cut m... | 02/13/1990 |
