Worm-type Gear Patents (Class 187/271)
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Patent number: 10202259Abstract: 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: GrantFiled: April 16, 2014Date of Patent: February 12, 2019Assignee: Pedarco International LimitedInventor: Tarcisio Scomparin
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Patent number: 9926171Abstract: 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: GrantFiled: June 5, 2014Date of Patent: March 27, 2018Assignee: Shenzhen Shengshi Elevator Co.,LtdInventor: Xukai Jin
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Patent number: 9856111Abstract: 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: GrantFiled: April 23, 2010Date of Patent: January 2, 2018Inventors: Paul Anderson, Thomas R. Aultz, Timothy J. Beitz, Scott Kim Thompson
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Patent number: 9834411Abstract: 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: GrantFiled: April 22, 2015Date of Patent: December 5, 2017Assignee: Precision Surveillance CompanyInventors: Christopher Cox, David Maldonado, Bogdan Gaita
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Patent number: 9815666Abstract: 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: GrantFiled: August 14, 2015Date of Patent: November 14, 2017Assignee: Trust <T> Lift Corp.Inventor: Richard Meunier
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Patent number: 9776832Abstract: 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: GrantFiled: February 6, 2013Date of Patent: October 3, 2017Assignee: OTIS ELEVATOR COMPANYInventors: Tadeusz Pawel Witczak, Richard N. Fargo, Martin J. Hardesty
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Patent number: 9734925Abstract: 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: GrantFiled: December 3, 2014Date of Patent: August 15, 2017Inventor: Peter Leister
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Patent number: 9463957Abstract: 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: GrantFiled: August 3, 2011Date of Patent: October 11, 2016Assignee: COREEELEVATOR CO., LTD.Inventors: Nam Young Kim, Sung Jun Ju, Hyon Jo Ji
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Patent number: 9227816Abstract: 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: GrantFiled: August 26, 2013Date of Patent: January 5, 2016Inventor: Min-Chin Chen
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Publication number: 20140182977Abstract: 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: ApplicationFiled: August 26, 2013Publication date: July 3, 2014Inventor: Min-Chin CHEN
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Publication number: 20130206514Abstract: 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: ApplicationFiled: August 3, 2011Publication date: August 15, 2013Applicant: COREEELEVATOR CO., LTD.Inventors: Nam Young Kim, Sung Jun Ju, Hyon Jo Ji
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Patent number: 8402850Abstract: 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: GrantFiled: December 9, 2009Date of Patent: March 26, 2013Assignee: Delaney Technologies Inc.Inventor: François Delaney
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Patent number: 8295652Abstract: 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: GrantFiled: October 8, 2008Date of Patent: October 23, 2012Inventor: Devin Newstead
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Patent number: 7771155Abstract: 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: GrantFiled: September 20, 2007Date of Patent: August 10, 2010Assignee: Ron Shew WeldingInventors: James Thiel, Ron Shew, legal representative
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Patent number: 7328774Abstract: 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: GrantFiled: April 12, 2004Date of Patent: February 12, 2008Assignee: Rutherford Independence LimitedInventors: Gordon Molnar, Peter Shaw
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Patent number: 7225899Abstract: 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: GrantFiled: April 12, 2004Date of Patent: June 5, 2007Assignee: Rutherford Independence LimitedInventors: Gordon Molnar, Peter Shaw
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Patent number: 7093691Abstract: 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: GrantFiled: April 4, 2005Date of Patent: August 22, 2006Inventors: Barry Vaughan, Alvin Vaughan
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Patent number: 6830132Abstract: 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: GrantFiled: August 9, 2002Date of Patent: December 14, 2004Assignees: Korea Occupational Safety & Health Agency, Leesung ConstructionInventors: Shin-joon Kang, Chae-Min Hong, Jong-Myeon Kim, Jong-Soon Kim, Jong-Soo Kim
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Patent number: 6755283Abstract: 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: GrantFiled: March 6, 2002Date of Patent: June 29, 2004Inventor: You Lin
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Patent number: 6598708Abstract: 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: GrantFiled: January 17, 2001Date of Patent: July 29, 2003Assignee: Les Produits Fraco LteeInventors: André St-Germain, Luc Tessier
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Patent number: 6318503Abstract: 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: GrantFiled: September 22, 1999Date of Patent: November 20, 2001Inventor: Jose L. Hernandez
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Patent number: 6098758Abstract: 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: GrantFiled: November 23, 1998Date of Patent: August 8, 2000Assignee: Lucent Technologies Inc.Inventor: Frank V. Gates
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Patent number: 5526903Abstract: 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: GrantFiled: August 30, 1994Date of Patent: June 18, 1996Assignee: The University of ChicagoInventors: Deming Shu, Juan Barraza
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Patent number: 5433294Abstract: 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: GrantFiled: May 18, 1994Date of Patent: July 18, 1995Assignee: Delaware Capital Formation, Inc.Inventor: Roy J. Walker
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Patent number: RE44366Abstract: 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: GrantFiled: January 10, 2012Date of Patent: July 16, 2013Assignee: Rutherford Independence LimitedInventors: Gordon Molnar, Peter Shaw