Bizarre Patents
Dining Table Having Integral Dishwasher
A space-saving dishwasher, which may be installed within a counter top or table, having a dish-carrying rack that is vertically shiftable through the open top of the dishwasher for facilitating loading and unloading of the dishes.
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| Number | Title | Issue Date |
| 7328753 | Hydraulic breaking hammer with lubricated implement guide sleeve A hydraulic breaker hammer includes a housing with a longitudinal bore, a cylinder sleeve, and a rear end cover engaging the cylinder sleeve. A hammer piston is reciprocally powered in the cylinder sleeve for delivering blows to a working implement inserted in a gui... | 02/12/2008 |
| 7198117 | Method and arrangement for controlling percussion rock drilling The invention relates to a rock drilling arrangement and a method and program for controlling rock drilling on the basis of specific energy consumption. The specific energy of drilling is the quantity of energy used per a unit of length of the drilled hole. Not only... | 04/03/2007 |
| 6938702 | Method and equipment for controlling operation of rock drilling apparatus A method and an equipment for controlling the operation of a rock drilling apparatus, which rock drilling apparatus comprises a percussion device for producing impact energy to a tool of the rock drilling apparatus, a rotating device for rotating the tool in a drill... | 09/06/2005 |
| 6883620 | Device for hydraulic power supply of a rotary apparatus for percussive drilling A device for supplying hydraulic power to a rotary apparatus for percussive drilling (2) whereof the tool (3) is driven in one direction or another and subjected to the action of an impact device (6) acting independently of the rotation, of a hy... | 04/26/2005 |
| 6550544 | Rock drilling device A rock drilling device has a feed beam (1) and a rock drilling machine (2) movable along the feed beam. The rock drilling machine is fed along the feed beam (1) by a feed line (7), which is routed over a sheave (6) arranged at the movable end (5) of a pre... | 04/22/2003 |
| 6505689 | Arrangement for controlling rock drilling The invention concerns an arrangement for controlling a hydraulic rock drilling device. The arrangement includes a pressure ratio valve that is used for adjusting the relation between the pressures in the pressure channel leading to the percussion device ... | 01/14/2003 |
| 6318478 | Damper pressure control apparatus for hydraulic rock drill A damper pressure control apparatus for a hydraulic rock drill is automatically adjustable of damper pressure to be applied to a damping piston depending upon a thrust of a rock drill body and makes damping function and floating function effective even wh... | 11/20/2001 |
| 5564455 | Hydraulic circuit for automatic control of a horizontal boring machine A hydraulic circuit (10) is disclosed for use in controlling a horizontal boring machine which requires hydraulic fluid under pressure for rotating a drill bit or backreamer through a rotation circuit and hydraulic fluid under pressure for thrusting the d... | 10/15/1996 |
| 5168937 | Drill feed control utilizing a variable overcenter valve An apparatus includes a feed cylinder having a first end port and a second end port. A feed cylinder is located within the feed cylinder and is movable in a drive direction in response to fluid pressure applied to the first end port, and is movable in a r... | 12/08/1992 |
| 4838362 | Apparatus for manipulating a tool Apparatus for manipulating a tool which is particularly suited for use in drilling and inserting bolts into thin seams of mine workings. The apparatus (100) comprises a reaction support member (4) to support the tool, a chuck (1) for holding the tool, mou... | 06/13/1989 |
| 4711090 | Method of and device for adjusting the feed movement of a drill rod for drilling a rock In a method of and device for adjusting the feed movement of a drill rod for drilling a rock, the drill rod is rotated by a pressure-medium-operated rotary motor and fed in a drilling direction and in the opposite direction by a pressure-medium-operated f... | 12/08/1987 |
| 4660656 | Method and apparatus for controlling the rotational torque of a drill bit A method and apparatus for controlling the rotational torque of a drill bit powered by a downhole motor. The downhole motor is suspended from a hydraulic ram at the lower end of a string of drill pipe. A torque sensor detects the reactive torque in the do... | 04/28/1987 |
| 4503918 | Rock drilling apparatus A rock drilling apparatus for drilling with high pressure hydraulic jet including a rock drill body (11), a drill tool (12) coupled to said body (11) and a feeding device (15) with a motor (16) for feeding said body and tool to and fro the working face. T... | 03/12/1985 |
| 4491186 | Automatic drilling process and apparatus This invention relates to a process of automatic drilling with an in-hole motor particularly of the turbine type. The invention relates to apparatus and process by which the draw works responsive to a signal generated by an in-hole tachometer in the form ... | 01/01/1985 |
| 4440236 | Hydraulic control system for a rock drill A rock drill having a hydraulic system for controlling striking, rotating and advancing movements of a drilling rod. The advancing or forward feeding conduit for a feed actuator is provided with a relief valve which is responsive to the pressure in the po... | 04/03/1984 |
| 4322113 | Excavating machines for excavating rock and minerals having first and second alternative modes of control A excavating machine for excavating rock and minerals from a working face having a carriage with a boom support. A cutter carrying boom is moveably supported by the boom support, and a means is provided for moving the boom relative to the carriage. A driv... | 03/30/1982 |
| 4275793 | Automatic control system for rock drills A rock drill feed system moves a drill toward and away from a wall with a reciprocating hydraulic motor powered by pressurized fluid. The pressurized fluid is controlled by a movable control valve that has a first position obtained manually to move the dr... | 06/30/1981 |
| 4246973 | Controls for hydraulic percussion drill A control system for a hydraulic percussion rock drill and feed mechanism including a single constant power hydraulic pump for supplying pressure fluid to operate the feed mechanism, drill stem rotation motor, and the percussion hammer. The drill feed, ro... | 01/27/1981 |
| 4195699 | Drilling optimization searching and control method A searching method for optimizing the rate of penetration of a drill into a given medium based upon the two drilling parameters of thrust and speed of revolution. Preset base values of both parameters are input into the drilling control mechanism at the s... | 04/01/1980 |
| 4165789 | Drilling optimization searching and control apparatus An apparatus employed in the searching of the optimized rate of penetration of a drill into a given medium based upon the two drilling parameters of thrust and speed of revolution. Preset base values of both parameters are input into the drilling control ... | 08/28/1979 |
| 4064950 | Hydraulic drilling machine A hydraulic drilling machine for cutting into rock formations and the like. The machine has a rotating drill rod with a bit at one end and a rotary hydraulic drive motor at the other end. The drill rod is supported on a carriage adapted for linear travel ... | 12/27/1977 |
