For Angular Movement Patents (Class 248/652)
  • Patent number: 10079430
    Abstract: Various embodiments are described that relate to an antenna mount. Multiple antennas can be mounted on the antenna mount. These antennas can work together or be independent of one another. In an example of working together, one antenna can be a transmission antenna while the second antenna can be a reception antenna. The transmission antenna and reception antenna can function with regard to the same communication signal.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: September 18, 2018
    Assignee: The United States of America, as represented by the Secretary of the Army
    Inventor: Mark Govoni
  • Publication number: 20150144761
    Abstract: Embodiments of the present disclosure include apparatuses and systems used for the positioning of equipment. An apparatus according to an embodiment of the present disclosure can include a height adjustable table; a platform coupled to the height adjustable table; a tilt adjuster coupled to the platform, the tilt adjuster being configured to tilt the platform relative to the height adjustable table; an equipment support structure slidably connected to the platform, the equipment support structure being configured to support a piece of equipment; a drive mechanism coupled to the platform and configured to slidably move the equipment support structure across the platform; and a bracket coupled to the equipment support structure, wherein the bracket is configured to removably attach the piece of equipment.
    Type: Application
    Filed: November 25, 2013
    Publication date: May 28, 2015
    Applicant: General Electric Company
    Inventors: Michael Alan Davi, Stuart Craig Hanson, Thomas Alan Mogle, II, Robert Joseph Rohrssen, Wayne David Sullivan, Jun Yang
  • Publication number: 20140374567
    Abstract: A mount for attaching a winch to a vehicle. The mount allows the winch to be rotated to face the cable anchor during use, thereby preventing improper spooling of the cable.
    Type: Application
    Filed: September 1, 2014
    Publication date: December 25, 2014
    Inventor: Jamey Weidner
  • Patent number: 8915680
    Abstract: A hand-held tool protection device includes a handle sized and configured to be grasped by an operator. A neck portion extends outwardly from the handle in a direction of a elongated axis of the handle. A swivel assembly is connected to the neck portion. The swivel assembly includes a body having a top, a bottom and a sidewall. The body is connected to the neck portion at the sidewall of the body. An opening extends through the body and intersects the top and the bottom of the body. A pivotable rod member is slidably and pivotably received in the opening extending through the body to provide a pivot axis. A tool element holding assembly is connected to the pivotable rod member such that the tool element holding assembly pivots therewith about the pivot axis. The tool element holding assembly includes a support assembly configured for receiving a tool such that the tool may be rotated about a tool rotation axis.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: December 23, 2014
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Michael Wayne Divine, Bryan E. Berryhill
  • Patent number: 8800983
    Abstract: An operating table column has a column part a head part, and a plurality of actuating drives that each comprise a first element and a second element that can be linearly adjusted relative to this first element and that acts upon the head part. The first element of a first actuating drive is connected to the column part, while the head part is pivotably connected to the second element of the first actuating drive. The first element of a second actuating drive is pivotably connected to the column part, whereby, the head part is pivotably connected to the second element of the second actuating drive. The first element of a third actuating drive is connected at a distance from the head part to the second element of the first actuating drive and the second element of the third actuating drive is connected to the head part via respective universal joints.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: August 12, 2014
    Assignee: Maquet GmbH
    Inventors: Guido Koch, Rolf Revenus
  • Publication number: 20130325033
    Abstract: A robotic surgery system includes an orienting platform, a support linkage movably supporting the orienting platform, a plurality of surgical instrument manipulators, and a plurality of set-up linkages. Each of the manipulators includes an instrument holder and is operable to rotate the instrument holder around a remote center of manipulation (RC). At least one of the manipulators includes a reorientation mechanism that when actuated moves the attached manipulator through a motion that maintains the associated RC in a fixed position.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 5, 2013
    Inventors: Bruce Michael SCHENA, Roman L. Devengenzo, Scott Luke, David Martin, Thomas G. Cooper, Thomas Brown
  • Publication number: 20130292981
    Abstract: A motion platform having decoupled two axes adopts four modularized pneumatic bellows configured in an orthogonal arrangement. The pneumatic bellows can be independently controlled to cause the motion platform to be operated in one rotational degree of freedom with a frontward-and-backward swinging or a leftward-and-rightward swinging; or the pneumatic bellows can be synchronously controlled to cause the motion platform operated in two rotational degrees of freedom without being interfered with each other. Thus, the motion platform of the present disclosure is characterized with advantages of simplified mechanism, fewer components, convenient maintenance and reduced cost.
    Type: Application
    Filed: November 23, 2012
    Publication date: November 7, 2013
    Applicant: INJOY MOTION CORP.
    Inventor: Chung-Shu LIAO
  • Patent number: 8444107
    Abstract: An apparatus for supporting a load comprises a pivot apparatus coupled to the load and movable with the load; and a base stationary relative to the pivot apparatus. At least two areas of support are situated between the pivot apparatus and the base. Respectively opposite force components are at the two areas of support. The two areas of support move along a one curved path to tilt the load.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: May 21, 2013
    Assignee: inTEST Corporation
    Inventors: Henri M. Akouka, Christopher L. West, Charles Nappen
  • Patent number: 8079719
    Abstract: The invention provides for an improved mirror scanning system for use with a millimeter wave imaging system. The mirror scanning system includes a pair of voice coil actuators aligned generally perpendicular to a mirror. The voice coils are intermittently energized pursuant to a predetermined frequency related to a desired resolution. A base supports a back plate that is generally disposed parallel to the mirror and secures the pair of voice coil actuators. A rod flexure is secured to a center yoke, or coil bobbin, of each of the respective voice coils and to a back side of the mirror so that the pair of rod flexures simultaneously exert a force on the mirror causing deflection thereon as the pair of voice coils are energized. Stationary position sensors are mounted adjacent to each cylinder so the sensor can determine to location of the cylinder, and hence the angle of the mirror.
    Type: Grant
    Filed: March 6, 2008
    Date of Patent: December 20, 2011
    Inventors: Warren H. Miller, Kenneth D. White, Reeder N. Ward
  • Publication number: 20110215219
    Abstract: An embodiment of the present invention is a rotating structure. An outer ring is placed on a first surface of a trench in a foundation having a ground surface. An inner ring is positioned inside the outer ring on the first surface. A bar assembly is positioned between the outer ring and the inner ring. A plurality of rollers supports the bar assembly. A plurality of motors engages to the bar assembly to cause the bar assembly to rotate when activated.
    Type: Application
    Filed: May 16, 2011
    Publication date: September 8, 2011
    Inventor: Eric Holt
  • Patent number: 7690619
    Abstract: An apparatus that provides for rotation about two axes orthogonal to each other includes a gimbal having two arms adjoining a portion that is mounted to a base for rotation about a first axis. A shaft defining a second axis orthogonal to the first pivotally couples a mounting plate to the arms. The mounting plate has an arcuate edge with first and second parallel grooves therein adapted to receiving a drive cable. A drive cable that is engaged with a drive pulley is aligned by at least one idler pulley with the first and second grooves of the mounting plate. The drive cable has opposing free ends that are received in the first and second grooves of the mounting plate. A motor is coupled to the drive pulley for controlling the drive cable travel, to accordingly rotate the mounting plate to provide for orientating a device in a desired direction.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: April 6, 2010
    Assignee: Stereotaxis, Inc.
    Inventor: Charles Wolfersberger
  • Patent number: 7673589
    Abstract: An engine-driven work machine is provided in which elastic support members (11, 11) are disposed between a lower part of a work unit (U) having an engine (3) and a frame (2) having the work unit (U) mounted thereon, the elastic support members (11, 11) being disposed beneath a crankshaft (17) of the engine on either side of a vertical plane (V) passing through the axis of the crankshaft (17), and restricting means (122) is provided between the work unit (U) and the frame (2), the restricting means (122) restricting the amplitude of swing of the work unit (U) around the crankshaft (17) to within a predetermined angle, and the restricting means (122) being disposed between upper parts of the work unit (U) and the frame (2). Even when the work unit receives a large external force in the lateral direction, swing of the work unit can thereby be restricted to within the predetermined angle.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: March 9, 2010
    Assignee: Honda Motor Co., Ltd
    Inventors: Yuji Shimada, Hiromi Kakoo
  • Patent number: 6707189
    Abstract: An image pickup apparatus comprise a camera unit for photographing a subject and a driving device for driving the camera unit in a circumferential angle direction and an elevation angle direction, wherein the driving device includes a motor which drives the camera unit in the circumferential angle direction, and a motor which drives the camera unit in the elevation angle direction, and each of the motor and the motor is constituted of a permanent magnet motor including a planetary reduction gear.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: March 16, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tetsuya Ito, Kenichi Ito
  • Patent number: 6282084
    Abstract: A support apparatus for portable computers utilizes a plurality of legs removably coupled to a pedestal that incorporates a storage compartment within which the plurality of removable legs may be stored when not in use. By incorporation of a storage compartment within the pedestal, the overall bulk of the support apparatus is reduced, and furthermore, the removable legs are retained in such a manner that all components of the support apparatus can be transported as a unit.
    Type: Grant
    Filed: February 22, 1999
    Date of Patent: August 28, 2001
    Assignee: International Business Machines Corporation
    Inventors: Daniel Richard Goerdt, Eugene Arthur Leitner
  • Patent number: 6247676
    Abstract: A rotary positioning device useful for positioning optical devices such as polarizing prisms, or any similar optical device through which light is transmitted and which requires precise rotation thereof. The device is particularly designed to rotate through a limited arc at an extremely fine degree of resolution. The device utilizes cylindrical bearings formed from materials having a spring constant effective to insure lateral stability without experiencing irreversible deformation. In a preferred embodiment, a Beryllium-Copper alloy is utilized for forming the cylindrical bearings.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: June 19, 2001
    Inventor: Gary Yanik
  • Patent number: 6048143
    Abstract: A composite mechanism multi-axis machine tool includes an orthogonal coordinate feeding axis mechanism and a parallel type spatial linkage mechanism. The orthogonal coordinate feeding axis mechanism has two orthogonal platforms to provide two dimensional motion vectors. The parallel type spatial linkage mechanism has three sets of linear feeding modules engaging with a base frame for holding a main spindle which further holds a tool cutter. The parallel type spatial linkage mechanism provides one dimensional motion and two dimensional rotation for the tool cutter. A controller is provided to control and coordinate the movements of the orthogonal coordinate feeding axis mechanism and the parallel type spatial linkage mechanism.
    Type: Grant
    Filed: January 30, 1999
    Date of Patent: April 11, 2000
    Assignee: Industrial Technology Research Institute
    Inventors: Tsann-Huei Chang, Yeou-Bin Guu, Shang-Liang Chen
  • Patent number: 5890523
    Abstract: A workstation is provided with a curved tool rail suspended above a work surface. The curved tool rail has a tool trolley slidably coupled thereto for movably supporting a tool or part above the work surface. In a preferred embodiment, the work surface is part of a work bench. Preferably, the curved tool rail is suspended above the work surface by an adjustable frame which provides four-way adjustability of the curved tool rail. The curved tool rail keeps the tool or part suspended therefrom in reach of the worker.
    Type: Grant
    Filed: May 15, 1997
    Date of Patent: April 6, 1999
    Assignee: Hubbell Incorporated
    Inventor: James W. Johnson
  • Patent number: 5816552
    Abstract: An attachment for a camera dolly arm includes an attitude control system for maintaining a camera platform at a uniform attitude as the arm is raised and lowered. The attitude control system advantageously includes a lower disk joined to an upper disk by leveling rods. A head is pivotally mounted on a frame between two support plates which attach to the upper end of the dolly arm. The attachment may be used as a riser to elevate the camera platform. The attachment may also be used as an extension of the camera dolly arm, to increase the range of arm travel.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: October 6, 1998
    Assignee: Chapman/Leonard Studio Equipment Co.
    Inventor: Leonard T. Chapman
  • Patent number: 5775667
    Abstract: A stand for positioning an engine such as for assembly or repair. The stand has an enclosure supported by a base which houses a motorized drive mechanism employed to rotate a shaft carrying a mount adapted for securement to the engine. The stand also includes a braking assembly employed to stop rotation of the shaft for selectively positioning the engine relative to the stand when secured to the mount.
    Type: Grant
    Filed: July 26, 1996
    Date of Patent: July 7, 1998
    Inventor: Wayne T. Tassic
  • Patent number: 5560583
    Abstract: An arm (2) on which to mount an extractor and other equipment, the arm (2) is hinged by its inner end (9) to a support (17) with the intermediary of a mounting bracket (14), so as to be allowed to pivot essentially in the horizontal plane. A retaining device (18) acts between the arm (2) and the mounting bracket (14) to retain the arm in the set pivotal position. The retaining device (18) includes a rod (24) which carries friction washers (23) and which may be actuated by an actuator (20) via a rotationally mounted yoke (38) in order to move the friction washers (23) from their retaining frictional engagement with a plate (34) connected to the mounting bracket (14) and thereby allow the arm (2) to be pivoted as desired. The power actuator (20) is remote-controlled by a control unit positioned on the extraction hood of the extractor.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: October 1, 1996
    Assignee: Plymovent Aktiebolag
    Inventor: Ambjorn Holmgren
  • Patent number: 5473335
    Abstract: A base support for a moveable antenna employing a stepping motor and stepping motor controller to move the antenna in fine increments. The base support is attached to an upstanding mounting member. An antenna is attached to a first support structure connected to a base member. The support structure is operatively connected to a worm gear assembly and motor driven worm gear disposed between the base member and the support structure to effect movement of the antenna about a predetermined axis. The worm gear is driven by a stepping motor. The stepping motor is controlled by a stepping motor controller to control incremental movement of the antenna. A second worm gear assembly can be interposed transversly between the first support structure and a second support structure to effect movements of the antenna about a horizontal axis. A second stepping motor and second stepping motor controller are used to drive the second worm gear and effect incremental movement of the antenna about the horizontal axis.
    Type: Grant
    Filed: January 11, 1994
    Date of Patent: December 5, 1995
    Inventor: John L. Tines
  • Patent number: 5395088
    Abstract: The disclosed invention describes a stand used to support a keyboard in an elevated position. The stand may be adjustable so that the angle at which the keyboard is positioned may be changed as desired by the user.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: March 7, 1995
    Inventor: Jacob J. Ginsberg
  • Patent number: 5243927
    Abstract: A tubular housing is mounted to an outside bulkhead of a vessel with a tubular outrigger pole socket mounted at a first end to the tubular housing. An outrigger pole is mounted to the pole socket at a second end. A connecting strut, attached to a movable bracket at a first end, moves at one end within a slot in the tubular housing. The connecting strut, attached to a slidable bracket at a second end, moves at a second end within a slot in the pole socket. A collapsible strut supports the pole socket. A piston is hydraulically driven upwards within the tubular housing to retrieve the outrigger. The outrigger is deployed by pumping hydraulic fluid back to a pump reservoir. The pump is controlled electrically by a switch mounted on the vessel's steering panel.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: September 14, 1993
    Assignee: Talbott Pratt
    Inventor: Jeffery J. Messick
  • Patent number: 5112020
    Abstract: The disclosed invention describes a stand used to support a keyboard in an elevated position. The stand may be adjustable so that the angle at which the keyboard is positioned may be changed as desired by the user.
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: May 12, 1992
    Inventor: Jacob J. Ginsberg
  • Patent number: 4854532
    Abstract: A device for mounting a load and orienting the load in two orthogonal senses includes two facing elements. One element has three spheres disposed in first, second and third seats. A line joining the first and second seats is orthogonal to a line joining the first and third seats. The sphere in the first seat contacts a conical contact surface on the other element. The sphere in the second seat contacts a planar contact surface on the other element. The sphere in the third seat contacts a vee-groove contact surface on the other element. Displacement means, in the form of conical surfaces on threaded rods, associated with the second and third seats serve to displace the spheres outwardly of the second and third seats to cause tipping and tilting of the contact surface bearing element relative to the one element.
    Type: Grant
    Filed: December 19, 1988
    Date of Patent: August 8, 1989
    Assignee: Eastman Kodak Company
    Inventor: Joseph R. Trovato
  • Patent number: 4669699
    Abstract: A device for changing angles of a cutter assembly, adhesive ejecting nozzles, etc. relative to articles fed by a conveyor which includes a bracket provided with a U-shaped guide groove and a guide surface formed along the guide groove; a moving piece which moves along the guide groove and on the guide surface; and fixing means for fixing the moving piece, the cutting assembly or adhesive injection nozzles provided on the moving piece may be mounted at any desired angle along the guide groove. The device is further placed on the side of a conveyor such that the distance between the center of the commodity and any position between both ends of the guide groove can be kept consistent.
    Type: Grant
    Filed: September 9, 1985
    Date of Patent: June 2, 1987
    Assignee: Tetra Pak International Aktiebolag
    Inventor: Yutaka Kaneko
  • Patent number: 4591128
    Abstract: A tool reaction balancing mechanism consisting of a fluid-pressure reaction and balancing system and an articulated arm wherein the arm is suspended from dual overhead rails by a travelling bridge. The novel articulated arm has two pivotally connected arm sections. One of the arm sections is pivotally mounted at an end of the arm, to a portion of the bridge and the other arm section has means for holding a tool at an opposing end of the arm such that the articulated arm permits a tool fastened in the means for holding a tool to be displaced along a linear path. Biasing means urge the articulated arm toward a rest position wherein the arm sections of the articulated arm are folded in on each other.
    Type: Grant
    Filed: August 2, 1984
    Date of Patent: May 27, 1986
    Inventors: Gregory J. Karlichek, Ronald J. Secord
  • Patent number: 4585203
    Abstract: A device for positioning a member so as to face each of a plurality of perforations arranged in a given grid in a plate, especially for the inspection of the tubes of a steam generator in a nuclear power station. It comprises a body having at least two attachment members for fastening the device in the perforations. The device is rotatable around one or the other of these attachment members so as to displace it on the plate, and has a support carrying the member and pivotable with respect to the body in order to bring the member into a position facing several perforations without displacing the device.
    Type: Grant
    Filed: March 25, 1982
    Date of Patent: April 29, 1986
    Assignee: Intercontrole Societe Anonyme
    Inventors: Maxime Monne, Andrzej Adamowski
  • Patent number: 4560137
    Abstract: A device for positioning loads such as computer terminals or parts thereof has a pair of plates which are adjusted with respect to one another with an eccentric on a shaft between the plates which is rotated by a handle disposed outside the space between them. According to the invention, a friction brake is provided between the plates and engages the shaft to prevent undesired rotation which may vary the adjusted position.
    Type: Grant
    Filed: May 11, 1983
    Date of Patent: December 24, 1985
    Assignee: Svoboda Entwicklungs KG
    Inventor: Rudolf Svoboda
  • Patent number: 4506857
    Abstract: A motor having a motor casing rotatably supporting a motor shaft is mounted in respect to a base so as to permit adjustment of the angular relation of the axis of the motor shaft in respect to the base by providing first and second spaced apart fulcrum-defining abutments extending from the motor casing and engageable with the base along a first straight line which is spaced from the axis of the motor shaft, coil springs urging the fulcrum-defining abutments against the base so that the motor casing and shaft are angularly displaceable about the first straight line in respect to the base, a leaf spring disposed between the motor casing and base and having an angled portion for urging the motor casing and shaft angularly relative to the base in one direction, a pin with a threaded bore extending from the motor casing at a location which is spaced, in a direction opposite to the first straight line, from a second straight line passing through the axis of the motor shaft parallel to the first straight line, and a
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: March 26, 1985
    Assignee: Sony Corporation
    Inventors: Takeo Hara, Seiji Ito
  • Patent number: 4452418
    Abstract: A mounting mechanism for mounting a compressor in an engine compartment of a car comprises at least two plate members fixed to and projecting outwardly of the compressor at circumferentially spaced locations thereof, and at least two mount stay members fixed in the engine compartment and extending towards the compressor so as to lie in superposed face-to-face relationship with respective ones of the plate members. A bolt extends through one pair of superposed plate and mount members so as to pivotally mount the compressor for pivotal turning movement about the bolt to thereby enable adjustment of the position of the compressor. An elongate slot is formed in either the plate member or mount member of another pair of superposed plate and mount and the inner surface of the slot is provided with a toothed surface.
    Type: Grant
    Filed: August 21, 1981
    Date of Patent: June 5, 1984
    Assignee: Seiko Seiki Kabushiki Kaisha
    Inventors: Koji Urushihara, Yoshihito Okada, Haruyuki Komori
  • Patent number: 4445663
    Abstract: A rotating device for a drill mast of a roof bolting mining machine has a pair of hydraulic cylinders respectively connected to appropriate ends of a lever arm. The hydraulic cylinders are connected at their respective other ends to the mast and to the mining machine. Full contraction of one cylinder rotates the lever arm which rotates the mast up to 45 degrees. Additional contraction of the other cylinder rotates the mast an additional 45 degrees.
    Type: Grant
    Filed: April 22, 1982
    Date of Patent: May 1, 1984
    Assignee: Lee-Norse Company
    Inventor: Wynand M. Goyarts
  • Patent number: 4375878
    Abstract: An agile payload orientation system for a space satellite comprises a three-axis gimbal (30) for coupling an appended body (20) containing the payload (24, 25, 26, 27) to a main body (10) of the satellite. The appended body (20) also contains moment control gyroscopes (29), which are responsive to external command for changing the orientation of the appended body (20) relative to an inertial reference. The gimbal (30) comprises three separate torquer-resolver units (31, 32, 33), which are connected to each other in series so that their axes are mutually orthogonal to each other and coincide at a single point (34) located at the center of mass of the appended body (20). Since the center of mass of the appended body (20) does not move when the appended body (20) is rotated about the axis of any of the torquer-resolver units (31, 32, 33), a change in orientation of the appended body (20) can be made without disturbing the orientation of the main body (10).
    Type: Grant
    Filed: October 28, 1980
    Date of Patent: March 8, 1983
    Assignee: Lockheed Missiles & Space Company, Inc.
    Inventors: Thomas J. Harvey, Gary C. Gibson
  • Patent number: 4266749
    Abstract: A drill boom arrangement comprises a boom proper that is universally pivotably carried by a boom support. The boom carries a feed beam for a rock drill. The boom is swingable on the support by means of two hydraulic cylinders forming a tripod and the feed beam is swingable on the boom by means of two hydraulic cylinders forming another tripod. One of the boom swinging cylinders (17) is coupled in series with one of the feed beam swinging cylinders (28) and these two cylinders are actuated by means of a common direction control valve (58). The boom swinging cylinder (17) can be short-circuited so that the feed beam can be swung upon actuation of the direction control valve (58) while the boom is arrested. The other boom swinging cylinder (16) is coupled in series with the other feed beam swinging cylinder (29) to a common direction control valve (57) in the same way. A joy-stick (59) is coupled to the two direction control valves (57, 58) through pilot valves and pilot lines (64-67).
    Type: Grant
    Filed: April 10, 1979
    Date of Patent: May 12, 1981
    Assignee: Atlas Copco Aktiebolag
    Inventor: Axel L. Lundstrom
  • Patent number: 4257285
    Abstract: A roller shutter or door drum driving mechanism of the kind comprising a pivotally mounted electric motor, a gear train fixedly associated with said motor terminating in a pinion, a ring gear on the drum and manually operable, is furnished with releasable latch means which secure said motor and train in an operative position wherein the pinion meshes with the ring gear but, when released, permit the motor to move to an in-operative position wherein the pinion is clear of the ring gear.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: March 24, 1981
    Assignee: Byrne & Davidson Doors (N.S.W.) Pty. Limited
    Inventors: Martin H. Whitehouse, Mitchell J. Billows
  • Patent number: 4232848
    Abstract: In a drill boom arrangement, a feed beam for a rock drill is turnable by means of a hydraulic turning device (34) about an axis (45) that is normally parallel with the axis of drilling during drifting. When not actuated, the turning device (34) is at least partially relieved of torque by means of a friction coupling (52) which is coupled in parallel with the turning device and is normally engaged. The coupling is automatically released when the turning device is actuated. A slip-coupling (67) is coupled in parallel with the first coupling (52) and in series with the turning device in order to avoid overloading of the turning device which is hydraulically self-braking.
    Type: Grant
    Filed: April 10, 1979
    Date of Patent: November 11, 1980
    Assignee: Atlas Copco Aktiebolag
    Inventor: Erich V. Kimber