By Stairway Having Steps Forming An Endless Member Patents (Class 198/326)
  • Patent number: 6131719
    Abstract: A guard device (1) comprising a deflector (8) for guarding the gap between an escalator step and an escalator side wall. The guard device (1) comprises an elongate body portion (2) having an elongate recess (4) adapted to receive a base of a deflector (8) with some play. A mouth (6) of the recess (4) is sufficiently wide to allow the base of the deflector (8) to be inserted through it into the recess (4). An elongate wedging element (10) is adapted to be slid into an end of the recess (4) between the end of the deflector (8) and a side wall of the body portion (2), thereby taking up the said play and retaining the deflector (8) in the body portion (2).
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: October 17, 2000
    Assignee: Kleeneze Sealtech Limited
    Inventor: Nicholas Gore
  • Patent number: 6129198
    Abstract: An escalator or moving walkway is constructed to absorb oscillation and lateral displacement of a first story relative to a second story between which the escalator or moving walkway extends such as which may occur in the event of an earthquake. End mount devices are provided to serve as fulcrums for the elevator and as dampers. Lateral recesses for the reception of additional damping elements may be provided in recesses formed into the building construction.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: October 10, 2000
    Assignee: Invento AG
    Inventor: Harald Nusime
  • Patent number: 6129197
    Abstract: A guard element having a deflector (8, 10) for covering the gap between an escalator step (48) and an escalator side wall (46). The guard element comprises an elongate body portion (2) which supports the deflector (8, 10) and an elongate mounting portion (24, 28, 30, 38) which is adapted to abut the escalator side wall (46). The body portion (2) is provided with a formation (18, 20) which interengages with a corresponding formation (22, 36) provided on the mounting portion (24, 28, 30, 38).In a preferred embodiment, the formation on the mounting portion (24, 28, 30, 38) comprises a T-shaped rib (22, 36) and the formation on the body portion (2) comprises a T-shaped recess (18, 20, 26).
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: October 10, 2000
    Assignee: Kleeneze Sealtech Limited
    Inventor: Nicholas Gore
  • Patent number: 5996767
    Abstract: A transporter main body has a pair of front wheels and a pair of rear wheels, each of which is adapted to contact with a step of an escalator, a resilient member connected to the bottom of the transporter main body, a mounting structure for mounting a wheelchair, and an extending/retracting device connected with one end of the mounting structure for pivoting the mounting structure in vertical direction. After a wheelchair is mounted on the mounting structure, the wheels allow the transporter main body to be wheeled on the escalator. The resilient member grips the steps of the escalator to allow the wheelchair to ascend or descend with the escalator.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: December 7, 1999
    Assignee: Sunwa Ltd.
    Inventor: Rintaro Misawa
  • Patent number: 5924544
    Abstract: A terminal rail system for an escalator includes an escalator step including a step front roller and a step rear roller, an upper guide rail for guiding the step front roller, a lower guide rail for guiding the step rear roller, a semicircular inner casing and outer casing, the inner casing being engaged to the lower guide rail, at a curved portion of the lower guide rail the escalator step changing a proceeding level, and at least one end portion of each of the inner casing and outer casing being separated from a corresponding one thereof for thereby reducing an impact caused by the step rear roller. The terminal rail system flexibly buffers the respective impacts caused by the step rear roller for thereby considerably relieving the vibration and noise.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: July 20, 1999
    Assignee: LG Industrial Systems Co., Ltd.
    Inventor: Yi Sug Kwon
  • Patent number: 5915521
    Abstract: An apparatus is provided for indexing and lifting items from a first conveyer in a first plane and transferring such items to a second conveyor in a second plane it a different level than the first plane. The apparatus includes a transfer assembly for moving the items longitudinally from the first conveyer to the second conveyer. The apparatus also includes at least two longitudinally spaced-apart posts, each post having a top surface. The top surfaces of the posts cooperate to support an item. Connectors connect the posts to the transfer assembly and frame members mount the transfer assembly between the first and second conveyers at an angle relative to at least one of the first and second planes. The posts are configured so that when the transfer assembly is mounted at the angle, the top surfaces are in a single plane which is parallel to at least one of the first and second planes of the first and second conveyors.
    Type: Grant
    Filed: September 19, 1994
    Date of Patent: June 29, 1999
    Assignee: Raque Food Systems, Inc.
    Inventor: Glen F. Raque
  • Patent number: 5899314
    Abstract: A terminal rail for a passenger conveyor including an inner and outer guide rails is disclosed. According to the terminal rail, a portion on which the rear wheel roller is initially contacted with the outer guide rail includes a damper placed between an end of a straight portion of the outer guide rail and a desired position of a turning portion to damp impact produced when the rear wheel roller of the step travels from the inner guide rail to the outer guide rail of the terminal rail.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: May 4, 1999
    Assignee: LG Industrial Systems Co., Ltd.
    Inventor: Yi Sug Kwon
  • Patent number: 5829570
    Abstract: A terminal rail system for an escalator includes an escalator step having a step front roller and a step rear roller, an upper guide rail for guiding the step front roller, a lower guide rail for guiding the step rear roller, a semicircular inner casing and outer casing that are connected to each other by a side plate and engaged to a curved portion of the lower guide rail for guiding the step rear roller through a channel formed between the casings, a buffer attached to the semicircular outer casing to reduce an impact caused by the proceeding step rear roller. The terminal rail system decreases an impact resulting from the step rear roller, thereby decreasing pulsation or vibration of the step and obtaining an extended longevity of the step rear roller and the terminal rail.
    Type: Grant
    Filed: May 21, 1997
    Date of Patent: November 3, 1998
    Assignee: LG Industrial Systems Co., Ltd.
    Inventor: Yi Sug Kwon
  • Patent number: 5810147
    Abstract: In an escalator or a moving sidewalk having a skirt panel and, a step or a walk path, defining a gap between the skirt panel and the step or the walk path, a passenger conveyor safety apparatus comprising a main body member having a recessed groove formed therein. A set of brushes residing in the recessed groove, protruding out from the main body member and extending past the gap for preventing an object from being entrapped in the gap.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: September 22, 1998
    Inventor: Arthur Vanmoor
  • Patent number: 5806653
    Abstract: A roller assembly for a passenger conveyor step chain includes a rolling contact bearing disposed between a bushing and an axle of the roller assembly. The rolling contact bearing improves wear resistance and load carrying capabilities of the roller assembly and step chain. In a particular embodiment, the roller assembly includes a pair of seals and a lubrication chamber. The seals define a sealed region encompassing the rolling contact bearing and lubrication chamber. The seals prevent lubrication from leaking and debris from penetrating into the sealed region.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: September 15, 1998
    Assignee: Otis Elevator Company
    Inventors: Hermann W. Ahls, Angelika Minta, Birgit Glogau
  • Patent number: 5785166
    Abstract: A drive system for the steps and carriage pallets of escalators and moving idewalks. A conveyor chain is arranged beside the steps or carriage pallets, the conveyor chain having a number of link pins of different axial lengths cooperating with bushes. The link pins are axially longer and respectively fitted with a running roller provided in the region of the steps or carriage pallets and are connected with these, if desired, via further components. Also provided are a plurality of plates cooperating, also by way of running rollers if desired, with the axially shorter link pins and bushes. The plates are connected in a manner fixed against relative rotation as inner plates to the bushes and as outer plates to the link pins. Sealing elements are provided in the region of both faces of the bushes. The link pins are formed by electroplated, case-hardened steel pins and the bushes are made of a case-hardened quenched and tempered steel and electroplated between the link pins.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: July 28, 1998
    Assignees: O&K Rolltreppen GmbH of Hattingen, Ketten Wulf GmbH Gelenkketten- Und Kettenraderfabrik of Eslohe-Kuckelheim
    Inventors: Peter Hoefling, Hermann Wilke, Henrik Hauser
  • Patent number: 5697487
    Abstract: A pallet for a passenger conveyor includes an integrally formed thin walled support frame. The support frame walls all extend in the same principle direction to permit the support flame to be formed by an extrusion process. In a particular embodiment, the support frame includes thin walls extending in the width dimension. In another embodiment, the support frame includes multiple, integrally formed pieces having thin walls extending in the length dimension. The width of the support frame is dependent on the combined width of the multiple pieces.
    Type: Grant
    Filed: October 31, 1995
    Date of Patent: December 16, 1997
    Assignee: Otis Elevator Company
    Inventors: Bernward Engelke, Jorg Ostermeier, Peter Borchers
  • Patent number: 5595278
    Abstract: A pallet for a conveyor includes a first connector, a second connector, and a link engaging the connectors of adjacent pallets. The link permits the connectors of adjacent pallets to move relative to each other through an arcuate path. This arrangement for adjacent pallets results in a connection between the pallets that accommodates the varying distance between the adjacent pallets as they travel through a curved path.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: January 21, 1997
    Assignee: Otis Elevator Company
    Inventors: Jorg Ostermeier, Peter Borchers, Bernward Engelke
  • Patent number: 5496086
    Abstract: An apparatus for transporting a balustrade for a passenger conveying device includes a frame, a left support arm, and a right support arm. The right and left support arms are attached to the frame and include apparatus for attaching the escalator balustrade. The attaching apparatus attaches the transportation apparatus to the escalator balustrade, thereby enabling the balustrade to be transported.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: March 5, 1996
    Assignee: Otis Elevator Company
    Inventors: Willy Adrian, Joachim Arens, Gerald Wente
  • Patent number: 5325955
    Abstract: An apparatus for supporting the step chain of an escalator having a frame with a first and a second landing, an inclined section attached therebetween, and roller tracks fixed thereto, is provided and includes a pair of arcuated ramps for supporting the step chain in a transition area between either of the landings and the inclined section, inboard of the roller tracks, each of the ramps is made of a first bushing, a second bushing, and an elastomeric center section attached to the bushings.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: July 5, 1994
    Assignee: Otis Elevator Company
    Inventors: Hermann W. Ahls, Martin Mehlert, Jan G. Harbers
  • Patent number: 5219060
    Abstract: The step axle of an escalator is made with an inner, higher strength core piece and an outer, lower strength sleeve. The core is telescoped into the sleeve with opposite ends of the core projecting beyond corresponding outer ends of the sleeve. The step chains and step chain rollers are mounted on the harder outer ends of the core. The higher strength of the core prevents deformation of the composite axle from stresses imparted to the ends of the axle by the chains and rollers. The sleeve with its reinforcement of the core prevents the axle from bending in its center section when loads from the escalator steps are transmitted to the step axle from passengers on the escalator.
    Type: Grant
    Filed: May 24, 1991
    Date of Patent: June 15, 1993
    Assignee: Otis Elevator Company
    Inventors: Charles D. Diasparra, Gerald E. Johnson, Arthur M. McClement
  • Patent number: 5205391
    Abstract: A system is provided for adhesively attaching a first member to a generally planar portion of a second member. The system includes an attachment clip having a first, generally planar portion and a second portion remote from the first portion adapted for attachment to the first member. A generally planar base is sandwiched between the planar portion of the attachment clip and the planar portion of the second member. An adhesive is located between the base and the planar portion of the second member. A weld is provided between the base and the planar portion of the attachment clip. Therefore, "peel" stresses are eliminated between the base and the planar portion of the second member, as the weld develops a tensile load between the base and the planar portion of the attachment clip.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: April 27, 1993
    Assignee: Montgomery Elevator Company
    Inventors: Thomas R. Nurnberg, James J. VanMeenen
  • Patent number: 5193650
    Abstract: A portable stair lift system, for assistance in traversing short or medium length stairways, employs a pair of spaced elongated solid metal plates extending the stairway length and supported by a pair of vertically extending end brackets attached to a block of wood at each end thereof. An axle extends through each pair of end brackets and each axle supports a roller transversely disposed at the metal plate ends. At least one of these rollers is provided with a sprocket wheel secured to the axle between split roller segments. A reversible drive gear motor, drive chain connected to the sprocket wheel, drives the roller. A heavy duty conveyor belt is positioned about the pair of rollers. A passenger support system (either a chair seat or step segments) is secured to and movable with the conveyor belt. Manual switch means for controlling motor operation and direction are provided and actuatable by the passenger at any point along the stairway.
    Type: Grant
    Filed: May 6, 1992
    Date of Patent: March 16, 1993
    Inventor: George W. Kent, Jr.
  • Patent number: 5137135
    Abstract: The step chain rollers for an escalator or moving walkway are provided with an annular elastomeric tread mounted on the rim of the roller. The roller rim is formed with a recess or groove which receives the tread. The main body of the roller is metal, and the side edges of the roller contact a side part of the escalator roller track as the roller moves along the track. Lateral guidance for the step chain is thus provided. By recessing the tread in the roller rim, an increase in the metal-to-metal side contact zone between the roller and track is provided resulting in longer roller lift. The sides of the tread are preferably offset from the sides of the roller recess to allow crack-free expansion of the tread to occur.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: August 11, 1992
    Assignee: Otis Elevator Company
    Inventors: Kurt Pietsch, Hans-Jirgen Langer
  • Patent number: 4953686
    Abstract: The balustrade for transportation apparatus, such as an escalator or a moving passenger walkway contains upright balustrade panels directly laterally guiding tread elements, such as steps or tread plates so as to dispense with both of the conventionally employed inner balustrade decks with their associated inner deck covers. A respective stable support profile member connected with a support body and arranged at both sides of a transport element, such as a step or tread plate band receives the base of the associated balustrade panel. The heads of screws or threaded bolts required for fastening the associated balustrade panel are arranged counter-sunk in openings of such balustrade panel. Apart from the savings in cost realized with the invention it is also possible to reduce the entire structural width of the transportation apparatus.
    Type: Grant
    Filed: July 5, 1989
    Date of Patent: September 4, 1990
    Assignee: Inventio AG
    Inventor: Gerhart Rulke
  • Patent number: 4832169
    Abstract: A framework structure for an inclined passenger conveyor has a pair of horizontal framework portions and an inclined framework, each being a truss with a rectangular cross-section, the horizontal framework portions being at opposite ends of the framework structure and at a different height from each other with the inclined framework being connected between them. The horizontal framework portions each having an external shape in the form of a substantially rectangular parallelepiped and have one end surface angled at an angle to the horizontal axis thereof which is part of the angle between the horizontal framework portion and the inclined framework.
    Type: Grant
    Filed: January 9, 1985
    Date of Patent: May 23, 1989
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Shigeru Goto
  • Patent number: 4811829
    Abstract: A main frame of a passenger conveyor has a plurality of frame sections divided along the length thereof. Each adjacent pair of frame sections have opposed joint members provided at joint portions of the frame sections. When the frame sections are provisionally assembled, one of the joint members is formed therein with a positioning hole whereas the other joint member is fixedly connected with a positioning pin which, when the frame sections are re-assembled at an installation site, is engaged with the positioning hole to facilitate easy and quick re-assembly of the frame sections.
    Type: Grant
    Filed: May 7, 1987
    Date of Patent: March 14, 1989
    Assignees: Hitachi Ltd ., Hitachi Elevator Engineering Co.
    Inventors: Hayashi Nakazawa, Hiroumi Iyoda, Makoto Ueta
  • Patent number: 4569433
    Abstract: An escalator system comprises an endless loop of chain links extending between two landings, a plurality of steps pivotally connected to the chain link loop, a guide rail system for guiding the steps, and a drive means for driving the chain link along the chain link loop with the steps thereon. At least one of the escalator steps comprises a step main body pivotally connected to a chain link loop and guided by a guide rail system, and a drop-down portion pivotally mounted to the main body and movable between a horizontal position in which the main body and the drop-down portion together forms a usual step tread and a drop-down position in which the drop-down portion is dropped down for allowing a wheel chair to be carried on the steps.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: February 11, 1986
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Matsuhiko Ishida, Shosaku Inoue
  • Patent number: 4326622
    Abstract: The combination of an escalator and a wheel chair, the escalator having side walls between which an endless belt of flights is moved, there being a track extending between lower and upper platforms at which at least one has one or more control gates to govern the escalator speed, the wheel chair having spaced side frames with main wheel supports spaced from downwardly extensible front wheel supports and controlled in response to the track to depress said front wheel supports to maintain the horizontal disposition of the wheel chair during vertical displacement of the flights when transported between said platforms.
    Type: Grant
    Filed: December 11, 1980
    Date of Patent: April 27, 1982
    Inventor: Floyd P. Ellzey
  • Patent number: 4235326
    Abstract: A conveyor, in which continuous flights of steps in an endless form are guided by means of guide tracks, and a pair of handrails in an endless form are provided on each side of the flights of steps thereabove and moved at the same speed and in the same direction as those of the flights of steps. This conveyor includes: a pair of main frame bodies each consisting of a vertical member which is formed integrally with upper and lower horizontal members which extend from the top and bottom edges thereof in the horizontal direction, respectively; and transverse beams interconnecting the upper horizontal members of the aforesaid main frame bodies, and connecting members interconnecting the lower horizontal members of the main frame bodies at suitable points along the length of a conveyor. The pair of main frame bodies are positioned on each side of the aforesaid endless flights of steps, respectively.
    Type: Grant
    Filed: August 26, 1976
    Date of Patent: November 25, 1980
    Assignees: Hitachi, Ltd., Hitachi-Mito Kogyo, Ltd.
    Inventors: Toshiharu Nakao, Katsuya Teranishi, Makoto Kawagoshi
  • Patent number: 4235327
    Abstract: Escalator with driver device for carrying of transportation carts on the escalator steps. The transportation carts are secured against rolling down the escalator steps by a carrying and abutment device, which device is arranged on both sides of the transportation carts along the balustrades.
    Type: Grant
    Filed: February 12, 1979
    Date of Patent: November 25, 1980
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Helmut Heusler, Bruno Kiefer
  • Patent number: 4179020
    Abstract: A transporter conveyor system, integrated with an escalator, for the transportation of pieces of baggage from one conveying plane to a different conveying plane. Parallel to the escalator for the transportation of people there is arranged an endless baggage conveyor belt which is provided with balustrades, which conveyor belt is driven synchronously with the escalator.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: December 18, 1979
    Assignee: O&K Orenstein & Koppel Aktiengesellschaft
    Inventors: Helmut Heusler, Fritz Behle
  • Patent number: 4154336
    Abstract: A vertically adjustable conveyor track comprises a horizontal and an inclined sections coupled by a curvilinear section. The curvilinear section of the track is made in the form of a block chain including rows of plates arranged one after another. The end faces of the plates in each row are provided with teeth which engage each other. Such a design of the track enables the adjustment of the elevation height of the track within wide limits: the track can be set in any position from the horizontal one to a position close to the vertical one. The width of the race of such a track is constant throughout its length. This reduces the wear of the rollers.
    Type: Grant
    Filed: December 16, 1977
    Date of Patent: May 15, 1979
    Inventor: Jury L. Sorokin
  • Patent number: 4064986
    Abstract: An escalator including an endless belt and a plurality of steps attached thereto. The endless belt and steps are guided about a loop which includes load bearing and return runs for the steps, by guide wheels rotatably mounted on a common side of the endless belt, and a guide track. The guide wheels and guide track have cooperative, non-flat surfaces which guide the endless belt and steps about the loop, as well as provide the required support for the associated side of the endless belt.
    Type: Grant
    Filed: April 30, 1976
    Date of Patent: December 27, 1977
    Assignee: Westinghouse Electric Corporation
    Inventor: Matthew G. Bertovich
  • Patent number: 4004676
    Abstract: Transportation apparatus for transporting persons between spaced landings, including a plurality of steps, and skirt members disposed at opposite sides of the steps. The steps each include tread and riser parts which cooperatively define projections on the riser side of the step adjacent to the skirt members. The projections on the step form an obtuse angle between the skirt members and the immediately adjacent portions of the riser part.
    Type: Grant
    Filed: July 17, 1975
    Date of Patent: January 25, 1977
    Assignee: Westinghouse Electric Corporation
    Inventor: Joseph K. Kraft