Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 5259469 | Drilling tool for percussive and rotary drilling A drilling tool for percussive and rotary drilling in advance of a trailing casing tube (20) has a reamer (15) pivotally journalled and an eccentric shaft (12) rearwardly of a centric pilot bit (11). The reamer (15) has an eccentric portion (32) carrying ... | 11/09/1993 |
| 5249645 | Pressure fluid actuated lubricator A pressure fluid actuated lubricator having a housing (46), a pressure fluid channel (43, 42, 21) leading from an inlet opening (2) to an outlet opening (7), a reservoir (44) for a lubricant and a discharge device (19) for the lubricant. The reservoir (44... | 10/05/1993 |
| 5244049 | Rock drilling device Rock drilling device comprising a drilling tool with a set of tubes (7) and a set of rods (9) arranged therein. The drilling tool comprises a number of sections which each comprises a tube (7), a rod (9) and an end piece (11). The rod is provided with pro... | 09/14/1993 |
| 5228752 | Tunnel boring machine Tunnel boring machine whose driving shaft (4) adjacent to the boring head (6) is journalled in a bearing (12) which is intended to take up only radial forces. Shaft (4) is at its other end journalled in bearings (13,14) which take up both radial and axial... | 07/20/1993 |
| 5209311 | Drill string component Drill string component for top hammer drilling comprising a rod (13) surrounded by a tube packet (4,5). The rod is provided with a thickened section (14) for cooperation with a diameter reduction (15) in the tube packet which at upwards drilling is situat... | 05/11/1993 |
| 5207280 | Device in hammer machines Device in hammer machines. The device comprises a machine housing (1) and a hammer piston (2) movable to-and-fro in the machine housing. A drilling tool connected to the machine housing comprises a drill bit (5), a set of tubes (4) for rotating the drill ... | 05/04/1993 |
| 5165825 | Rock bolting device Rock bolting device comprising a swingable bolting unit (2) which carries a conduit (4) for transport of hardenable mass to a drill hole (3). The conduit is surrounded by a tube (5) in which a thickened part (6) of the conduit is movable to-and-fro under ... | 11/24/1992 |
| 5161645 | Lubricator connected to a pressure fluid line A lubricator intended to feed lubricant, by a short impulse, to a pressure fluid line each time that tapping of pressure fluid is started. In the lubricator, a pressure fluid valve (29) is provided which, after a delay of a fraction of a second, is opened... | 11/10/1992 |
| 5159814 | Pneumatic impulse motor with gas cushion An impulse motor for a hand held hammer machine comprises a housing (10) with a cylinder (11) therein, in which a reciprocating drive piston (40) via a gas cushion in a working chamber (44) of said cylinder (11) repeatedly drives a hammer piston (15) to i... | 11/03/1992 |
| 5146687 | Compass The improvement of the present invention provides a camper's compass having a plate or member, such as an arcuate bow, having a direction pointer, which is pivotably mounted over the compass housing in such as way that it can swing between a normal forwar... | 09/15/1992 |
| 5138758 | Method for joining two or several overlaying sheet formed members together, metal or non-metal, and apparatus for carrying out the method The present invention provides method and apparatus for joining together two or more overlaying sheet formed metals, either metallic or non-metallic, in which a movable punch is moved towards a stationary die axially in a first direction and into a first ... | 08/18/1992 |
| 5114279 | Device for setting a rock bolt Device for setting a rock bolt. The device is provided with a bolt magazine (6) arranged on a feed beam (1). Rock bolts (8) are transferred from the bolt magazine to the setting position in line with a hole drilled in the rock by means of a swingable arm ... | 05/19/1992 |
| 5104261 | Tunnel boring machine Tunnel boring machine for reaming of a pilot tunnel (11). The machine housing (12) is provided with a projecting part in front of the boring head (13), said projecting part comprising a part (20) being fixed relative to the machine housing and a shield (1... | 04/14/1992 |
| 5104262 | Tunnel boring machine Tunnel boring machine comprising a number of swingable arms (11,12,13,14) provided with boring tools (41,42,43,44) for the working of the tunnel wall outside its normal diameter. The arms may be swung outwardly into an active position or retracted into an... | 04/14/1992 |
| 5097913 | Portable percussive machine A percussive machine comprises a housing (10) with a cylinder (11) therein, in which a reciprocating drive piston (40) via a gas cushion in a working chamber (44) repeatedly drives a hammer piston (15) to impact on the neck (17) of a tool (20) carried by ... | 03/24/1992 |
| 5088566 | Hand held hammer machine A hand held hammer machine comprises a housing (10) with a cylinder (11) therein, in which a reciprocating drive piston (40) via a gas cushion in a working chamber (44) repeatedly drives a hammer piston (15) to impact on the neck (17) of a tool (20) carri... | 02/18/1992 |
| 5083499 | Impact motor with improved sealing of a drive piston An impact motor comprises a housing (10) with a cylinder (11) therein, in which a reciprocating drive piston (40) via a gas cushion in a working chamber (44) of said cylinder (11) repeatedly drives a hammer piston (15) to impact on and to return from the ... | 01/28/1992 |
| 5074870 | Clamp for clamping blood vessels or aneurysms A clamp for clamping blood vessels or aneurysms has a pair of operational arms and a corresponding pair of hemostatic ends for engaging a blood vessel or aneurysm. The operating arms are attached to each other, without pivot mounting, with a coil spring h... | 12/24/1991 |
| 5067660 | Stress regulator for pulp grinding apparatus and method The present invention provides a regulator for a refiner or grinding apparatus having opposed relatively rotatable grinding discs. Each grinding disc carries a grinding segment, and a predetermined gap or grinding space is defined between the grinding seg... | 11/26/1991 |
| 5060735 | Device for positioning of a drill bit Device for positioning of a drill bit (1) at a positioning plane (2). A drill rig (3) is provided with two video cameras (9) for sensing the position of a light source (8) adjacent the drill bit. The video cameras are aligned in parallel. The image fields... | 10/29/1991 |
| 5058690 | Rock working tool Rock working tool for a tunnel boring machine. The tool comprises a shaft (34) with a central hole (35). A tool part (8,9) is rotatably journalled on the shaft. The tool is cooled through the arrangement of channels (40,41,42) in the tool for conducting c... | 10/22/1991 |
| 5052503 | Eccentric drilling tool An eccentric drilling tool comprises a guide member (10) rotatably centered by the mouth of a casing tube (11) that follows the tool downhole during drilling. A pilot bit (23) on the guide member (10) is provided with axially oriented hard metal pilot but... | 10/01/1991 |
| 5052498 | Portable hammer machine A portable hammer machine comprises a cylinder (11) in which a reciprocating drive piston (40) via a gas cushion in a working chamber (44) repeatedly drives a hammer piston (15) to impact on and to return from a tool (20) carried by the machine as soon as... | 10/01/1991 |
| 5048618 | Hammer machine A hammer machine comprises a machine housing (10) with a cylinder (11) in which a reciprocating drive piston (40) via a gas cushion (44) drives a hammer piston (15) to impact on respectively to move away from a tool (20) carried by the housing (10). The m... | 09/17/1991 |
| 5046783 | Tunnel boring machine Tunnel boring machine comprising a transmission housing (11) which during boring is fixed relative to the tunnel. The boring head (15) is axially displaceable relative to an outgoing shaft (14) of the transmission housing while transferring torque from th... | 09/10/1991 |
| 5042726 | Apparatus and method for conjoint adjustment of both the inner and outer grinding spaces of a pulp defibrating apparatus A method and apparatus is provided for conjoint or simultaneous adjustment of the gap spaces of the inner and outer grinding zones of a pulp refiner apparatus in a single step. The inner grinding zone is generally radially oriented, and merges into an out... | 08/27/1991 |
| 5040621 | Flushing means for drilling tools A flushing device for drilling tools comprises a guide member (10) carrying a drill bit (20) and being rotatably centered by the mouth of a casing tube (11) which is adapted to follow the drilling tool downhole during drilling. The drill bit (20) has a bi... | 08/20/1991 |
| 5009274 | Laterally adjustable drilling tool A drilling tool is followed by a casing tube (11) down the drilled hole. The mouth of the casing tube (11) centers rotatably a guide member (10) which receives rotation and impact energy via the interior of the casing tube (11). A drill bit (20) consists ... | 04/23/1991 |
| 5009013 | Device in machines for the marking of workpieces The present invention provides a device to be used in machines which mark workpieces with characters or other symbols and have marking tools for applying the symbols to the workpiece, and elements for selecting the symbols and controlling the movements of... | 04/23/1991 |
| 5005656 | Device in impact machines Device in impact machines. The device comprises a number of rods (6) provided with projections (51). The rods are journalled in a surrounding set of tubes (7) by means of elastic bushings (52,53) which are provided with grooves (57) through which said pro... | 04/09/1991 |
| 5003971 | Expansion system for a medical and surgical dressing A medical and surgical dressing has an expansion system designed to cover, yet be spaced apart from, a healing wound when the dressing is applied. In its expanded configuration, the dressing is bubble shaped. The dressing includes an adhesive material for... | 04/02/1991 |
| 4993923 | Rotary compressor with capacity regulation valve A rotary compressor being provided with a capacity regulation valve (16) at the outlet of the compressor. The valve is movable between a first position (18) in sealing cooperation with an end face (19) of the compressor rotor and a second position (20) cr... | 02/19/1991 |
| 4991669 | Device for controlling the passage of a flushing medium in impact machines Device in impact machines. The device comprises a set of rods comprising a number of rods (6) which are journalled in a surrounding set of tubes (7) by means of elastic bushings (52, 53). One of the bushings is provided with a lip (54) which sealingly res... | 02/12/1991 |
| 4992175 | Method for improving the separation properties of semi-permeable membranes and membranes accordingly improved A method for improving the separation properties of semi-permeable membranes having penetrating defects due to the manufacturing process or subsequent handling and membranes accordingly improved. During a certain time one side of the membrane is exposed t... | 02/12/1991 |
| 4978542 | Method for preparing food having reduced fat content The present invention provides a method and apparatus for the preparation of what is commonly known as "fast foods" such as french fried potatoes. The method of the present invention pre-cooks food in a non-fat environment such as a microwave oven. Therea... | 12/18/1990 |
| 4962874 | Notepad holder for automobiles The present invention provides a notepad holder for automobiles which may be mounted directly to the windshield of a car for viewing by the driver during operation of the motor vehicle or for making notes during times when the vehicle is momentarily stopp... | 10/16/1990 |
