Worm-type Gear Patents (Class 187/271)
  • Patent number: 10202259
    Abstract: Vertical and horizontal movement system of one or more cabins (20) for the transport of people and things in a elevator shifter plant with portal structure (10) for the overcoming overhead and not, back and forth even automatic, obstacles such as roads, railways, waterways and other obstacles affected by driveways and not, especially for pedestrians, usable either in an overhead manner that underground and also incorporated in large buildings such as hospitals, airports, railway stations and so on, with two or more runaways running horizontally and vertically, in which one or more runways include vertical and horizontal stops and descents placed at different levels to overcome obstacles also passing under the same; operated by rack, wherein the motor is rigidly coupled to the cabin and acts via a pinion gear on the rack, having inclined toothing, to increase the fluidity of the movement reducing vibration and noise.
    Type: Grant
    Filed: April 16, 2014
    Date of Patent: February 12, 2019
    Assignee: Pedarco International Limited
    Inventor: Tarcisio Scomparin
  • Patent number: 9926171
    Abstract: An embedded safety elevator includes a van body, a motor, a battery, a driving wheel, a transmission rod, an embedded elevating device, and an inwardly concave spiral guide rail. The embedded elevating device is embedded in the guide rail and can move up and down along the guide rail; the embedded elevating device is fixed on the van body to drive the van body to move up and down, the motor and the battery are mounted on the van body and are connected with the driving wheel, the driving wheel is connected with the transmission rod, and the transmission rod is further connected with the embedded elevating device. The motor is started to drive the driving wheel to rotate, the driving wheel drives the transmission rod to rotate, the transmission rod transmits the power to the embedded elevating device for driving the embedded elevating device to spirally elevate.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: March 27, 2018
    Assignee: Shenzhen Shengshi Elevator Co.,Ltd
    Inventor: Xukai Jin
  • Patent number: 9856111
    Abstract: A braking system and method for an apparatus or vehicle moved along a pathway by a drive mechanism, for halting the movement of the apparatus or vehicle in the event that the drive mechanism loses power or malfunctions. A conveyance system is provided including a structure defining a pathway, an moving apparatus supported for movement along the pathway, a drive mechanism operatively connected for moving the apparatus along the pathway, a brake rail having along one edge a multiplicity of regularly spaced teeth that define gaps between successive teeth, disposed along the pathway and secured to the structure, and a brake device mounted securely to the apparatus.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: January 2, 2018
    Inventors: Paul Anderson, Thomas R. Aultz, Timothy J. Beitz, Scott Kim Thompson
  • Patent number: 9834411
    Abstract: In one embodiment, there is a unique heavy lifting system capable of transporting vertically heavy loads from grade to any elevation required by the project.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: December 5, 2017
    Assignee: Precision Surveillance Company
    Inventors: Christopher Cox, David Maldonado, Bogdan Gaita
  • Patent number: 9815666
    Abstract: An emergency movement device for a lift has a mounting body attached to the lift and a pivoting body pivotally attached to the mounting body. A gear box with an output drive shaft for engaging a main drive of the lift is provided. The output drive shaft is movable in conjunction with the pivoting body. The pivoting body is movable between an engaging position in which the output drive shaft engages the main drive to allow for rotation of the main drive of the lift and a non-engaging position in which the output drive shaft is disconnected from the main drive. An input shaft is provided and has a first end and a second end. The first end is connected to the gear box to allow rotation of the input shaft which causes rotation of the output drive shaft. An input shaft support is positioned on the lift for providing support to the input shaft so that the input shaft is supported in a substantially horizontal orientation.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: November 14, 2017
    Assignee: Trust <T> Lift Corp.
    Inventor: Richard Meunier
  • Patent number: 9776832
    Abstract: An elevator system includes a car, configured to travel through a hoistway; a first stationary drive unit, configured to be mounted in a hoistway, a first movable drive unit, configured to be functionally coupled to the car and to the first stationary drive unit, and a second movable drive unit, configured to be functionally coupled to the car and to the first stationary drive unit.
    Type: Grant
    Filed: February 6, 2013
    Date of Patent: October 3, 2017
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Tadeusz Pawel Witczak, Richard N. Fargo, Martin J. Hardesty
  • Patent number: 9734925
    Abstract: A device for lifting and lowering of loads in vertical shafts, in particular of containers with radioactive contents, is disclosed. This device comprises a load platform A, the load thereof being supported by at least four hollow spindles B1, B2, B3, B4 arranged symmetrically in a shaft and having a column-like structure. Each hollow spindle B1, B2, B3, B4 is assembled from individual identical modules C1, C2, C3, C4. Each module C1, C2, C3, C4 consists of a front part 1 and a rear part 2. The rear part 2 has multiple horizontal bores 3, by means of which both a firm anchorage with the shaft wall and a firm screw connection with the front part 1 is enabled. The front part 1 consists of two identical parts 4a, 4b that form on the front side a longitudinal slit 5.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: August 15, 2017
    Inventor: Peter Leister
  • Patent number: 9463957
    Abstract: An elevator moving along an elevator shaft in a building, comprises a car for transport, a worm driving part moving together with the car, a rotating axis of which is parallel to a moving path of the car, and a worm support part including supporting teeth installed in the elevator shaft along the moving path of the car in accordance with worm teeth of the worm driving part. Using the worm driving part and the worm support part mutually interacting, the elevator can go up and down, and the worm driving part and the worm support part keep low frictional resistance to improve an efficiency of lifting.
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: October 11, 2016
    Assignee: COREEELEVATOR CO., LTD.
    Inventors: Nam Young Kim, Sung Jun Ju, Hyon Jo Ji
  • Patent number: 9227816
    Abstract: The vertical support structure includes a half tube and a mounting member. The half tube has an inner surface defining a receiving space and formed with a series of axially spaced-apart helical groove halves. The mounting member is connected to an outer surface of the half tube. A lifting device is also disclosed, and includes a plurality of the vertical support structures, a plurality of rotation units, a plurality of slide housings, a lift carrier, a drive motor and a plurality of transmission units.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: January 5, 2016
    Inventor: Min-Chin Chen
  • Publication number: 20140182977
    Abstract: The vertical support structure includes a half tube and a mounting member. The half tube has an inner surface defining a receiving space and formed with a series of axially spaced-apart helical groove halves. The mounting member is connected to an outer surface of the half tube. A lifting device is also disclosed, and includes a plurality of the vertical support structures, a plurality of rotation units, a plurality of slide housings, a lift carrier, a drive motor and a plurality of transmission units.
    Type: Application
    Filed: August 26, 2013
    Publication date: July 3, 2014
    Inventor: Min-Chin CHEN
  • Publication number: 20130206514
    Abstract: An elevator moving along an elevator shaft in a building, comprises a car for transport, a worm driving part moving together with the car, a rotating axis of which is parallel to a moving path of the car, and a worm support part including supporting teeth installed in the elevator shaft along the moving path of the car in accordance with worm teeth of the worm driving part. Using the worm driving part and the worm support part mutually interacting, the elevator can go up and down, and the worm driving part and the worm support part keep low frictional resistance to improve an efficiency of lifting.
    Type: Application
    Filed: August 3, 2011
    Publication date: August 15, 2013
    Applicant: COREEELEVATOR CO., LTD.
    Inventors: Nam Young Kim, Sung Jun Ju, Hyon Jo Ji
  • Patent number: 8402850
    Abstract: A load displacement apparatus to displace a mobile platform along a structure includes a worm screw mounted on the platform for rotation about its axis that meshes with a plurality of support blocks mounted on the structure. The support blocks are spaced apart from one another along the structure to be successively engaged by the worm screw. Each support block includes a plurality of bearing balls freely movably supported and retained therein to selectively and movably engage the worm screw over at least an arc segment thereof such that the worm screw is always in meshing engagement with at least one of the support blocks. A scaffolding system incorporating the apparatus is also described.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: March 26, 2013
    Assignee: Delaney Technologies Inc.
    Inventor: François Delaney
  • Patent number: 8295652
    Abstract: An ergonomic laptop for permitting a user to adjust a viewing angle or height as needed may include a base member preferably having a keyboard displayed on a top surface thereof. A mechanism for linearly biasing the display screen along a y-axis defined above the base member, for adjusting a spatial distance between the display screen and the base member, may also be included. Further, the laptop preferably has a mechanism for pivoting the display screen about a fulcrum axis oriented along an x-axis defined subjacent to the y-axis. The base member preferably remains statically positioned at a fixed location while the display screen is linearly displaced along the y-axis. Additionally, a plurality of telescopic shafts and sleeves may be included along with a worm gear centrally disposed between the sleeves to linearly bias the display screen in a vertical direction.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: October 23, 2012
    Inventor: Devin Newstead
  • Patent number: 7771155
    Abstract: A multi-lift for lifting and storing motorcycles and other vehicles includes a column, incorporating a vertical threaded shaft therein. The shaft is capable of rotation in opposite directions through a reversing motor. The shaft has a threaded carriage mounted thereon, so that as the shaft rotates in one direction, the vehicle laden carriage may be elevated for storing a vehicle or the reversing motor may be turned in an opposite direction, for lowering a vehicle laden carriage, to provide for unloading a vehicle. The threaded carriage that mounts on the threaded shaft may hold one or more wheeled vehicles, and is telescopically constructed so as to extend its length, to allow for storing one or more vehicles lengthwise thereon.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: August 10, 2010
    Assignee: Ron Shew Welding
    Inventors: James Thiel, Ron Shew, legal representative
  • Patent number: 7328774
    Abstract: A lift drive comprising: a spiral drive element having an axis of rotation, a rack having teeth sized and shaped to be engaged by the spiral drive element, the rack having a longitudinal axis parallel to the axis of rotation, and a motor to rotate the spiral drive element, wherein upon the spiral drive element-rotating, one of the spiral drive element and the rack moves relative to the other along the longitudinal axis.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: February 12, 2008
    Assignee: Rutherford Independence Limited
    Inventors: Gordon Molnar, Peter Shaw
  • Patent number: 7225899
    Abstract: A stair lift for lifting and lowering at least one person on a rail on a stairway. There is a carriage mountable to the rail, the carriage having a track engaging drive, and a motor to power the drive, the powered drive causing the carriage to move along the rail. There is a central support post mounted on the carriage and an offset arm connected to the seat support post. The offset arm is mounted to the carriage in one of a left side or a right side position. A seat is mounted on the offset arm, and a notched plate secures the seat in position on the offset arm in either the left side or right side position and permits the seat to swivel between a sideways facing position and an upward facing position to facilitate the person getting into and out of the seat.
    Type: Grant
    Filed: April 12, 2004
    Date of Patent: June 5, 2007
    Assignee: Rutherford Independence Limited
    Inventors: Gordon Molnar, Peter Shaw
  • Patent number: 7093691
    Abstract: A lift assembly includes a first platform provided with a top surface, a pair of opposed sides, and wheels and brackets connected to one of the sides for rotating the assembly. A plurality of rectilinear support shafts have opposed end portions conjoined to the platform and extending upwardly therefrom, and are spaced at opposed corners of the platform. Inverted U-shape guide rails are telescopically engageable along a length of the support shafts and have a pair of rectilinear regions slidably positionable about the support shafts. A second platform is provided with top and bottom surfaces, and apertures formed at opposed corners thereof that are vertically registered with the support shafts. A lifting mechanism is included for vertically biasing the second platform and the guide rails along the support shafts. The lifting mechanism is connected to the top surface of the first platform and the bottom surface of the second platform.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: August 22, 2006
    Inventors: Barry Vaughan, Alvin Vaughan
  • Patent number: 6830132
    Abstract: A brake device for elevator, including a hollow box-shaped elevator car (1) for holding the passenger or luggage; block (5) having a pair of guide rails (6) for guiding upwards and downwards the elevator car (1); a plurality of racks (4) disposed at the block (5) along the lifting direction in vertical; at least one motor (2) tooth-engaged with at least one pinion (2a) at the racks (4), for lifting upwards and downwards the elevator car (1), clutch (12) for controlling power transmission to connect a driving shaft (19) to a driven shaft (20) when the pinions (11) engaged with the racks (4) are rotated at high speed due to elevator crash; hydraulic pump (15) for generating hydraulic pressure from power transmission through a plurality of transmission gears (13) when the clutch (12) delivers rotation; and a plurality of hydraulic cylinders (17) for braking the elevator by brake pad (18) in tight coupled with the guide rails (6) by hydraulic power from the hydraulic pump (15).
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: December 14, 2004
    Assignees: Korea Occupational Safety & Health Agency, Leesung Construction
    Inventors: Shin-joon Kang, Chae-Min Hong, Jong-Myeon Kim, Jong-Soon Kim, Jong-Soo Kim
  • Patent number: 6755283
    Abstract: A spiral propeller provides a better secure and a more reliable spiral comprising spiral-lifting wheels, interlocking wheel interlocked with the spiral-lifting wheel, and fixed track supporting the interlocking wheel; the spiral lifting wheel is a rotating wheel with spiral external teeth, which is fixed at the top of the compartment, so as to drive the compartment for upward and downward movements, and interlock with the interlocking wheel; a interlocking rotating wheel of truncated cone shape, which can rotate along the axial direction of the wheel itself; a fixing track is set up between the guide brackets of the elevator, i.e., between the vertical supporting brackets of the guide bracket, in the appropriate locations are set with interlocking wheels.
    Type: Grant
    Filed: March 6, 2002
    Date of Patent: June 29, 2004
    Inventor: You Lin
  • Patent number: 6598708
    Abstract: A driving apparatus includes a roller screw that includes a main shaft, a plurality of roller shafts projecting radially outwardly and upwardly at an angle from the radial direction of the main shaft and arranged along a helical line there around, and a plurality of rollers rotatably mounted on the roller shafts. The rollers are tapered to the same angle inwardly toward the main shaft. A rail member, adjacent to and axially oriented with the main shaft, includes a plurality of spaced projections adapted for radial engagement with the tapered rollers. The angle of the tapering is pre-determined to provide a sliding free engagement between the rollers and the projections with the interface there between being oriented to intersect the rotation axis of their respective roller shaft on the rotation axis of the main shaft. The rotation of the main shaft axially moves the roller screw relative to the rail member.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: July 29, 2003
    Assignee: Les Produits Fraco Ltee
    Inventors: André St-Germain, Luc Tessier
  • Patent number: 6318503
    Abstract: An exterior emergency escape system for use on a multi-storied building that includes an escape module for holding people escaping from the multi-storied building and for moving along the exterior of the multi-storied building, cables for suspending the escape module from the cornice of the roof, and apparatus for moving the escape module vertically along the exterior of the multi-storied building. In one embodiment, the apparatus is attached to the cornice of the building, and in another embodiment, the apparatus is attached to the escape module.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: November 20, 2001
    Inventor: Jose L. Hernandez
  • Patent number: 6098758
    Abstract: A hoist mechanism for raising and lowering a platform within the interior of a tower and confined within the tower interior. In a first illustrative embodiment, a motor driven worm gear drives rubber coated wheels that are spring loaded to apply pressure to vertical tower members.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: August 8, 2000
    Assignee: Lucent Technologies Inc.
    Inventor: Frank V. Gates
  • Patent number: 5526903
    Abstract: A stage or support platform assembly for use in a synchrotron accurately positions equipment to be used in the beam line of the synchrotron. The support platform assembly includes an outer housing in which is disposed a lifting mechanism having a lifting platform or stage at its upper extremity on which the equipment is mounted. A worm gear assembly is located in the housing and is adapted to raise and lower a lifting shaft that is fixed to the lifting platform by an anti-binding connection. The lifting platform is moved vertically as the lifting shaft is moved vertically. The anti-binding connection prevents the shaft from rotating with respect to the platform, but does permit slight canting of the shaft with respect to the lifting platform so as to eliminate binding and wear due to possible tolerance mismatches.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: June 18, 1996
    Assignee: The University of Chicago
    Inventors: Deming Shu, Juan Barraza
  • Patent number: 5433294
    Abstract: A geared traction elevator includes a worm shaft, supported by a pair of tapered roller bearings in a gear box housing, one end of which projects out of an opening in the gear box housing and is coupled to the motor. The motor end bearing assembly is secured against axial movement by a retainer ring, which is secured in a groove in the gear box housing, and the motor end of the worm shaft is sealed by a dynamic seal, also secured in the housing. A cap bears against the bearings at the other end of the shaft, to pre-load the bearings to a predetermine level. In this manner, the dynamic seal may be replaced without affecting the pre-load setting. Preferably, the bearings are disposed in openings at opposite ends of the gear box housing which are large enough to allow the worm shaft to be removed through either end. The arrangement simplifies the manufacture of the gear box, and reduces the time and parts necessary to replace the dynamic seal.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: July 18, 1995
    Assignee: Delaware Capital Formation, Inc.
    Inventor: Roy J. Walker
  • Patent number: RE44366
    Abstract: A lift drive comprising: a spiral drive element having an axis of rotation, a rack having teeth sized and shaped to be engaged by the spiral drive element, the rack having a longitudinal axis parallel to the axis of rotation, and a motor to rotate the spiral drive element, wherein upon the spiral drive element-rotating, one of the spiral drive element and the rack moves relative to the other along the longitudinal axis.
    Type: Grant
    Filed: January 10, 2012
    Date of Patent: July 16, 2013
    Assignee: Rutherford Independence Limited
    Inventors: Gordon Molnar, Peter Shaw