Disappearing-instrument Type Patents (Class 312/21)
  • Patent number: 9628882
    Abstract: A sound apparatus is disclosed. The sound apparatus includes a body, a bracket coupled to a lower portion of a rear surface of the body, a plurality of upper links, one end of each of the upper links being hinge-coupled to the bracket, a middle frame hinge-coupled to the other end of each of the upper links, a plurality of lower links, one end of each of the lower links being hinge-coupled to the middle frame, and at least one speaker module hinge-coupled to the other end of each of the lower links to vertically move according to rotational movement of the upper links and the lower links, wherein a direction of rotation of the upper link is opposite to a direction of rotation of the lower links, and the middle frame moves in a lateral direction during the rotational movement of the upper links and the lower links.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: April 18, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Joonsub Bae, Jaejun Lee
  • Patent number: 8800455
    Abstract: A case for an audio mixer console comprises first and second frame members, a carrier surface and a releasable latch member. The first and second frame members are spaced apart from each other. A first side of the carrier surface is proximate to the first frame member and a second side of the carrier surface is proximate to the second frame member. The carrier surface is pivotally coupled to the first and second frame sides along a first axis of rotation and moves with respect to the first axis of rotation between a first position and a second position. The carrier surface further comprises a catch member located proximate to a back edge of the carrier surface between the first and second frame sides. The releasable latch member releasably engages the catch member when the carrier surface is in the second position.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: August 12, 2014
    Inventor: Dana Monroe
  • Patent number: 7806490
    Abstract: An appliance elevator includes a lift mechanism mounted to a substantially planar mounting panel at least a portion of which extends beyond the body of the lift mechanism to provide an area by way of which the mounting panel and lift mechanism pre-mounted on the mounting panel can be easily positioned within a piece of furniture and attached to the furniture by way of one or more fasteners such that substantially the entire mechanical load on the lift mechanism when it is in use is transferred to the furniture by way of the mounting panel.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: October 5, 2010
    Assignee: ImportAdvantage, Inc.
    Inventor: Robert C. Buehl
  • Patent number: 7278229
    Abstract: The present invention is an ironing board storage device that removably attaches to a wall and rests on a support surface. The device includes an ironing board moveably mounted within a housing and a lift mechanism operatively engaged with the ironing board that can automatically move the ironing board upwardly from a generally vertical storage position with a distal end positioned beneath the proximal end to a generally horizontal operating position. A guide assembly is operatively engaged with the ironing board to initiate and guide the movement of the ironing board. In addition, the guide assembly secures the ironing board in the operating position.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: October 9, 2007
    Assignee: Whitney Design, Inc.
    Inventor: Wen Chang Fen
  • Patent number: 6997525
    Abstract: An audio visual system is provided comprising a housing, a video display, at least one speaker support coupled to at least one of the display and the housing, and at least one speaker mounted to and supported by the speaker support, the housing and the at least one speaker each having a front wall, the display and the at least one speaker support being movable from a first state, where the display and the at least one speaker, which is in a first position, are in the housing and hidden from view when viewing the front wall of the housing, to a second state, where the display and the at least one speaker are spaced from the housing and at least partially unobstructed thereby with the at least one speaker being in a second position differently spaced from the display than when in the first position. Among the many advantages of the invention is that the video display and speakers can be hidden from view when the system is not in use.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: February 14, 2006
    Inventor: Alan Gillengerten
  • Patent number: 6381133
    Abstract: A computer dock for use in a vehicle has a retainer body suitable for mounting in the vehicle. A moveable member is moveable with respect to the body from a retracted position within the body to an extended position, and a mounting on the moveable members retains a notebook computer. The dock has a plurality of cables for connecting power from the vehicle and for connecting a cell phone and other facilities in the vehicle to the computer.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: April 30, 2002
    Inventor: Jack Chen
  • Patent number: 5584551
    Abstract: A refrigerator cabinet includes a metal outer case with top and side walls. A narrow front face projects inward from the walls and a stiffening flange, positioned rearward of the face, projects inward of the walls substantially further than the face. A pair of open front liners are received within and spaced from the outer case and from each other. The liners have top and side walls with distal edges located rearward of the stiffening flange. An elongated plastic breaker strip extends between the outer case front face and the liner top and outer side walls. The breaker strip front wall overlaps the outer case front face and extends inward to a position inward of the inner edge of the stiffening flange. The breaker strip side wall extends rearward from the breaker strip front wall to a position overlapping the top and outer side walls of the liners.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: December 17, 1996
    Assignee: General Electric Company
    Inventor: Thomas E. Jenkins
  • Patent number: 4993782
    Abstract: Improvements to standard sewing machine cabinets are disclosed which provide for use of an additional sewing machine such as a serger. The improvements include a swivel panel secured to a side panel of the sewing machine cabinet which is hinged so as to swing between a position parallel to and perpendicular to the side panel of the cabinet. A work table is hinged at one end to the top of the swivel panel and can be moved between a folded position when parallel to the swivel panel and in an erected position when in a position perpendicular to the swivel panel. When in erected position, the work table may be swiveled between straight positions in line with the cabinet top to an L position when perpendicular to the cabinet top or alternately folded away in a compact position.
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: February 19, 1991
    Assignee: IMC Corporation of America
    Inventor: Kenneth J. Williams
  • Patent number: 4828342
    Abstract: Disclosed is a convertible computer desk with a construction that allows it to convert from a conventionally appearing desk into a configuration in which computer equipment, such as a monitor and related equipment, is raised to desktop level from internal storage and a keyboard is exposed. A pair of upright, space-apart support walls extend from the front to the rear of the desk and are provided with tracking means along their upper portions, and a concealable keyboard support shelf extends between forward parts of the support walls. A storage compartment located between the support walls holds an elevatable equipment platform for raising equipment from within the compartment to desktop level. A pair of rectangular desktop panels are mounted to the tracking means in a manner which allows them to be manipulated during conversion from one desk configuration to another.
    Type: Grant
    Filed: October 3, 1988
    Date of Patent: May 9, 1989
    Inventor: Alexander Stefan
  • Patent number: 4735467
    Abstract: A stow away video display terminal in combination with a computer work station or desk wherein the video display terminal is concealed within the desk beneath the work surface in a stored condition when not in use and raised to a viewable position above the work surface by means of a motor driven lift mechanism when it is needed.
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: April 5, 1988
    Assignee: Westinghouse Electric Corp.
    Inventor: Richard H. Wolters
  • Patent number: 4717212
    Abstract: A sewing machine cabinet has a power lift operable by a rack and pinion type of mechanism whose pinion is driven by a reversible electric motor which preferably has incorporated therein braking means and speed reduction gearing. The rack is provided by one of a pair of guide columns, which is preferably indented along its length in sprocket formation. The pinion is preferably a sprocket wheel meshing with the sprocket indentations.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: January 5, 1988
    Assignee: Roberts Mfg., Inc.
    Inventor: Kent S. Roberts
  • Patent number: 4697857
    Abstract: A feeder bin having spaced-apart, opposing side walls delimiting a cavity. Disposed in the cavity is a first guide attached to one of the sidewalls delimiting a first guide space and a second guide attached to opposing side wall delimiting a second guide space. Also included are first and second elongated flexible members, a portion of the first elongated flexible member disposed in the first guide space and the second elongated flexible elongated member disposed in the second guide space. Disposed beneath the flexible elongated members are continuous chains having upper and lower portions, the upper portion are affixed to the first terminal portion of the first elongated flexible member and the lower portions are attached to a first terminal portion of the second elongated flexible member; and, a transverse member attached to the second terminal portions of the first and second elongated flexible members.
    Type: Grant
    Filed: December 12, 1986
    Date of Patent: October 6, 1987
    Assignee: Anteg, Inc.
    Inventors: Dulin L. Annas, Sr., Richard M. Teague
  • Patent number: 4579397
    Abstract: A lift device for a sewing machine head of the type having a free arm to alternately provide flat bed, free arm and storage positions in a cabinet having a tabletop with a cutout for the sewing machine head and a pivoting lift mechanism disposed beneath the cutout. The lift device includes a base plate for the sewing machine head secured to the pivoting lift mechanism to permit movement of the sewing machine head between the flat bed, free arm and storage positions. The lift mechanism includes a pair of primary links having first ends pivotally secured to the underside of the tabletop adjacent and on opposite sides of the cutout and a pair of secondary links having first ends pivotally secured at opposite sides of the base plate remote from the points at which the primary links are secured to the tabletop with the second ends of the primary links being pivotally secured to the second ends of the secondary links.
    Type: Grant
    Filed: October 4, 1984
    Date of Patent: April 1, 1986
    Assignee: Sears, Roebuck & Co.
    Inventors: John C. Gall, Richard D. Meharg
  • Patent number: 4568117
    Abstract: A storage turntable is comprised of a prism having spaced apart polygonal ends connected by a plurality of rectangular sides. Each of the sides provides a desired storage accessory such as a beverage container receptacle or a coin storage device. One side of the turntable is a plain planar surface which merely closes the opening. The console has a rectangular opening and the turntable is rotatably mounted within the opening by axles which extend from the polygonal ends of the prism and are rotatably journaled in bearing blocks attached to the console housing so that rotary movement of the prism sequentially registers a desired one of the storage accessories with the console opening for access by the vehicle occupant. A round thumb wheel is attached to the prism and extends above the surface of the console to provide a convenient means by which the turntable can be rotated. A detent is provided to retain the turntable at the selected position.
    Type: Grant
    Filed: September 27, 1984
    Date of Patent: February 4, 1986
    Assignee: General Motors Corporation
    Inventors: Donald C. McElfish, Frederick L. Colombo, Brian J. Worrell
  • Patent number: 4423912
    Abstract: An arrangement for adapting a flat bed sewing machine to support a convertible bed sewing machine for flat bed sewing includes a support bracket assembly and a support arm assembly which both extend into the cavity of the sewing machine. The sewing machine is fixedly mounted on the support bracket assembly for supporting the rear of the sewing machine. The support arm assembly supports the front end of the sewing machine and swings out of the way when not supporting the sewing machine to provide clearance for the sewing machine when the sewing machine is in its stored position within the cavity of the cabinet.
    Type: Grant
    Filed: May 13, 1982
    Date of Patent: January 3, 1984
    Assignee: The Siner Company
    Inventors: Louis F. Daman, Albert L. Newman, John Patricia
  • Patent number: 4382641
    Abstract: A sewing machine storage cabinet is disclosed wherein a first portion is attached to a wall and contains a sewing machine attached to a table capable of moving from a vertical folded position, about a horizontal axis, to a horizontal operative position. A second part of the cabinet is attached to the first part and provides a door to cover the table and associated machine when in its folded position. The exterior of the door may be provided with a design to improve its aesthetic quality when in its closed position. The cabinet also contains a sewing basket in which extra needles, thread, bobbins, etc. may be stored.
    Type: Grant
    Filed: September 10, 1980
    Date of Patent: May 10, 1983
    Assignee: Morton Glass Works
    Inventor: Donald Abel
  • Patent number: 4379601
    Abstract: An interlock mechanism for a sewing machine cabinet of the drop head type that prevents the inadvertent unlatching of the sewing machine support platform prior to pivoting hinged panels out of the way thereby preventing damage to the sewing machine and panels.
    Type: Grant
    Filed: March 16, 1981
    Date of Patent: April 12, 1983
    Assignee: The Singer Company
    Inventor: William G. Hauser
  • Patent number: 4312549
    Abstract: A mounting arrangement for a sewing machine is disclosed, comprising a cabinet having an aperture in its top plate, a base plate on which a sewing machine is rigidly secured and an elongated narrow plank member pivoted to the base plate and to an edge of the top plate aperture. The plank member links the base plate to the cabinet. Supports and a locking device retains the assembly of the base plate and plank member in three positions: a top position in which the base plate and plank member are coplanar and level with the top plate to maintain the sewing machine in a free arm position; an intermediate position in which the plank member extends downwardly and vertically from the top plate and the base plate is horizontal to maintain the sewing machine in a flat bed position, and a lower position in which both the plank member and the base plate extend downwardly to maintain the sewing machine in stored tilted position within the cabinet.
    Type: Grant
    Filed: April 24, 1980
    Date of Patent: January 26, 1982
    Inventor: Lucien Ravenelle
  • Patent number: 4290657
    Abstract: A sewing machine cabinet in which a sewing machine 43 can be placed in operable position, and the cabinet has as work table 17 movable between an upper position level with the bed of the machine and a lower position giving free access to the cylinder bed 44 of the machine. Support arms 54, 56, 62, 63 on the sides of the cabinet support brackets 48, 49 that carry the work table 17 in a path that moves vertically between the upper and lower positions without moving transversely to one side. Leaves 23, 24 can be attached to the ends of the work table 17 to move up and downward so as always to be at the same level as the work table to provide extra space for the work at the most convenient level. The work table 17 can be moved up and down by a hand lever 92 or foot lever 31 with a latch 37 to engage the lever to hold the work table in its upper position.
    Type: Grant
    Filed: February 6, 1980
    Date of Patent: September 22, 1981
    Assignee: The Singer Company
    Inventor: Robert V. Haas
  • Patent number: 4253715
    Abstract: A console for a sewing machine comprises a supporting base which includes a rear wall with respective opposite sidewalls and a front wall hinged to one side wall which is openable and is provided with a cover at right angles to the upper edge thereof so that it forms in an open position a fabric support table. A carrier, including a plate portion which has a top surface for supporting the sewing machine and a back support is connected to the rear wall of the supporting base. The back support includes the lower part engaged with the supporting base and an upper part which is hinged to the lower part which is connected to the carrier to support the carrier in an operative position above the supporting base. In addition, a stirrup has a central portion pivotally connected to the carrier plate and a lower portion which is guided in slots in each side wall. The carrier in the upper position of the slot supports the carrier plate with the sewing machine in an operative position.
    Type: Grant
    Filed: March 2, 1979
    Date of Patent: March 3, 1981
    Assignee: Pfaff Haushaltmaschinen GmbH
    Inventor: Ulrich Greiner
  • Patent number: 4243281
    Abstract: A typewriter cabinet includes a fixed bottom, fixed sidewalls and a rear wall extending vertically from the base. A moveable front wall is hingeably connected to the base. A pair of hinged top plates serve as a top for the typewriter cabinet when the typewriter is recessed, but swing outward and serve as part of the top when the typewriter is raised and in use. A moveable shelf for holding the typewriter includes a rear backrest which supports the typewriter when it is recessed. The moveable shelf is hinged to the top of the moveable front wall and folds against the inside surface of the moveable front wall. A rotatable pivot plate has three pivot points. The first pivot point is connected to a connecting point on an edge of the moveable shelf. The second pivot is connected to a pin extending from the sidewalls. The third point is connected by means of a spring to an anchor point on the base.
    Type: Grant
    Filed: August 23, 1979
    Date of Patent: January 6, 1981
    Inventor: Paul R. Egger
  • Patent number: 4226486
    Abstract: A convertible table structure, providing a planar table top adapted, among other things, to support an open-arm or portable type of sewing machine, includes an apertured platform providing the table top and having a platform section fitting the aperture and adapted to mount the sewing machine so it can be lowered to a position wherein its working surface is coplanar with the work top of the platform proper. Link means, such as parallel motion mechanism, attaches the platform section to the platform proper, and means, such as a specially shaped lever rod, is provided for moving the platform section between its coplanar position and a lowered position, as well as for locking the platform section in its coplanar position. Other means are provided for holding such platform section in a selected lowered position. Legs or other suitable structure, such as a cabinet, supports the platform at a convenient working level.
    Type: Grant
    Filed: December 29, 1978
    Date of Patent: October 7, 1980
    Assignee: Roberts Mfg., Inc.
    Inventors: Kent S. Roberts, Brent J. Roberts, Fredrick D. Roberts
  • Patent number: 4201427
    Abstract: A mechanism for positioning a sewing machine in a sewing machine cabinet includes an improved linkage attached to the cabinet and supporting a mounting platform for the sewing machine. The linkage permits movement of the platform between a storage position within the cabinet to either one of two horizontal operating positions. The linkage includes one pair of pivot arms connected from each side of the platform to a bracket suspended from the cabinet. Also one support pin projects from each side of the platform and cooperatively engages an associated positioner attached to the cabinet. The positioners retain the platform in either horizontal operating position. The platform may be tilted from the horizontal operating positions to release the support pins from the positioners and permit movement of the platform to another desired position.
    Type: Grant
    Filed: August 7, 1978
    Date of Patent: May 6, 1980
    Assignee: Keystone Consolidated Industries, Inc.
    Inventor: John L. Orr
  • Patent number: 4194799
    Abstract: A mounting mechanism for a free arm sewing machine which is moveable selectively to an upper use position wherein the free arm is positioned above the work surface of the cabinet, a lower use position wherein the free arm is flush with the cabinet work surface, and a storage position wherein the entire machine is disposed below the work surface. The mechanism comprises a frame, a sewing machine support platform, and first and second pivot arms which are pivotally connected to the frame and the platform such that the platform is capable of limited rotating and swinging movement relative to the frame. The platform is latched in its upper use and lower use positions by means of a pair of spaced plates having forwardly and upwardly opening slots therein, which are adapted to releaseably retain and support either a pair of protruding pins on the platform or, in an alternative embodiment, one of the pivot arms which extends around the plates.
    Type: Grant
    Filed: July 5, 1978
    Date of Patent: March 25, 1980
    Inventor: Eugene M. White
  • Patent number: 4183593
    Abstract: A vibration dampening member for a sewing machine cabinet having metallic hinges for supporting a work surface in a raised position. The hinges are fastened so that they contact a resilient compound exhibiting magnetic properties which attracts the hinges to prevent the transmission of vibration between adjoining surfaces.
    Type: Grant
    Filed: January 8, 1979
    Date of Patent: January 15, 1980
    Assignee: The Singer Company
    Inventor: Wesley R. Peterson
  • Patent number: 4126363
    Abstract: A sewing machine cabinet is disclosed having removable legs and fold-in sides thereby minimizing the amount of storage space required. This cabinet has the added feature of a built-in, rigid, folding storage compartment. The compartment includes two panels pivotably mounted one to the other and one to the cabinet whereby the two panels, along with the cabinet top and three adjoining sides, enclose an area beneath the cabinet top in which various articles appurtenant to sewing may be stored.
    Type: Grant
    Filed: December 1, 1977
    Date of Patent: November 21, 1978
    Assignee: The Singer Company
    Inventor: Robert S. Peets
  • Patent number: 4123124
    Abstract: A cabinet and work table for a sewing machine having a convertible work supporting bed capable of conversion from a flat work supporting bed to a free-arm bed. The cabinet work supporting surface is divided into two parts, a fixed rear work supporting surface and a laterally/vertically shiftable front work supporting surface. The sewing machine is supported in the cabinet with the work supporting bed forwardly of, contiguous with and spaced above the rear work supporting surface. The shiftable front work supporting surface may be shifted from a first position co-planar with the rear work supporting surface, wherein the sewing machine may be used in a free-arm mode, to a second position co-planar and contiguous to the work supporting bed of the sewing machine for the flat bed sewing mode, wherein the front work supporting surface augments the flat work supporting bed of the sewing machine.
    Type: Grant
    Filed: July 7, 1977
    Date of Patent: October 31, 1978
    Assignee: The Singer Company
    Inventor: Robert S. Peets
  • Patent number: 4089573
    Abstract: A hinge assembly for mounting a sewing machine in a cabinet includes means for adjusting the attitude of the machine in relation to the table top of the cabinet, in order to compensate for variations in structural tolerances of the hinge assembly and the cabinet, so that the machine when used either in a free-arm or flat-bed mode is disposed in accurate registration with the table top.
    Type: Grant
    Filed: February 7, 1977
    Date of Patent: May 16, 1978
    Assignee: DeSoto, Inc.
    Inventor: Eugene Aeschliman
  • Patent number: 4062606
    Abstract: This disclosure relates to cabinets and in particular to a cabinet which is adapted for use in performing textile operation in combination with a sewing machine having both flat bed and cylinder bed working capabilities. The cabinet may be opened from a stored position, in which the sewing machine is stored out of sight and the cabinet then has the appearance of a styled table or cabinet, to a first position wherein the work bed of the sewing machine is contiguous with a working surface of the cabinet, to a second position wherein the work bed of the sewing machine is in an elevated position relative to the aforementioned cabinet working surface to permit cylinder bed operation on the sewing machine and to a third position wherein a cutting board work area may be folded out from the cabinet to an elevation for permitting an operator to perform cutting operations on a material while in an operator standing position.
    Type: Grant
    Filed: August 17, 1976
    Date of Patent: December 13, 1977
    Assignee: The Singer Company
    Inventor: Robert Seymour Peets
  • Patent number: 4056294
    Abstract: A cabinet for storage of a sewing machine operable selectively for open arm and flat bed sewing is disclosed. The machine is mounted fast to a first panel for swinging movement therewith to operative position, and is locked in place by a second panel which swings out of position during the swinging movement of the first panel and to a return position to hold the first panel with the machine mounted thereon into a position for open arm sewing. Additional panels are mounted for swinging movement away from the machine during open arm operation thereof, and towards the machine to lie in planar relationship for flat bed sewing.
    Type: Grant
    Filed: September 22, 1976
    Date of Patent: November 1, 1977
    Assignee: Montgomery Ward & Co., Incorporated
    Inventors: Walter A. Godlewski, Bernard S. Roser, John B. Lyons
  • Patent number: 4018487
    Abstract: An improved sewing machine head lifter mechanism for supporting a sewing machine head in a cabinet includes a support linkage with a spring support mechanism for the linkage. An adjustable cam member is provided for cooperation with the spring mechanism. Thus, the adjustable cam engages one end of a tension spring. The opposite end of the spring engages a head support bracket. The spring is supported intermediate its ends. Pivotal movement of the cam member adjusts tension of the spring to provide the requisite force for supporting the head support bracket and an attached sewing machine head.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: April 19, 1977
    Assignee: Keystone Consolidated Industries, Inc.
    Inventors: John L. Orr, Robert A. Sewell
  • Patent number: 3986755
    Abstract: A hinge assembly for mounting a sewing machine in a cabinet. The hinge assembly guides the machine for vertical movement to be selectively supported on the cabinet in two different positions corresponding to free arm and flatbed modes of operation. Additionally, the hinge assembly guides the machine to a position within the cabinet for storage.
    Type: Grant
    Filed: August 25, 1975
    Date of Patent: October 19, 1976
    Assignee: Maruzen Sewing Machine Co., Ltd.
    Inventor: Tadao Kohara
  • Patent number: 3946682
    Abstract: A cabinet and work table for a sewing machine having a convertible work supporting bed capable of conversion from a flat work supporting bed to a cylinder bed. The cabinet work supporting surface is divided into two parts, a fixed rear work supporting surface and a laterally shiftable front work supporting surface. The sewing machine is supported in the cabinet with the flat work supporting bed forwardly of, co-planar and contiguous with the fixed work supporting surface. The shiftable work supporting surface of the cabinet is laterally shiftable from a position co-planar with the fixed work supporting surface of the cabinet and the flat work supporting bed of the sewing machine to a position subjacent the flat work supporting bed of the sewing machine and the fixed work supporting surface of the cabinet whereupon the flat bed may be converted to cylinder bed use.
    Type: Grant
    Filed: October 25, 1974
    Date of Patent: March 30, 1976
    Assignee: The Singer Company - Patent Department
    Inventors: Roy Melvin Cowdrey, Robert Seymour Peets
  • Patent number: 3938766
    Abstract: An adjustable typewriter platform mechanism is provided for use with a desk of the type having a typewriter platform recess in the desk top. The typewriter platform mechanism includes a U-shaped base plate which is horizontally mounted at a spaced distance below the desk top. Four vertically disposed jack-screws are rotatably journalled between the base plate and the desk top for nontranslational rotation; and means is provided for simultaneously rotating all of the jack-screws.A pair of parallel spaced and horizontally disposed support-bars are mounted to respective ones of the jack-screws to receive lifting motion therefrom. Limited relative horizontal movement between the support-bars and the jack-screws is permitted in two horizontal and orthogonally intersecting axes; and means is provided for vertically guiding the support-bars in one vertical plane to minimize relative movement between the support-bars and the jack-screws in one of the aforesaid horizontal axes.
    Type: Grant
    Filed: December 6, 1974
    Date of Patent: February 17, 1976
    Assignee: Garrett Tubular Products, Inc.
    Inventors: Bruce E. Herbolsheimer, Douglas D. Marsh