Patents Assigned to Montgomery Elevator Company
  • Patent number: 5394961
    Abstract: A safety edge assembly is provided for an electronic sensor system in an elevator doorway. A narrow elongated transmitter frame mounts appropriate electronic transmitting components of the system thereon and is fastened vertically on one side of the doorway. A narrow elongated receiver frame mounts appropriate electronic receiver components of the system thereon and is fastened vertically on the opposite side of the doorway. A power supply frame mounts appropriate electronic power components of the system thereon and is fastened in a piggyback fashion on the transmitter frame. Electrical cables are coupled between the electronic components on opposite sides of the doorway, the cables extending across the top of the doorway.
    Type: Grant
    Filed: April 29, 1993
    Date of Patent: March 7, 1995
    Assignee: Montgomery Elevator Company
    Inventor: William R. Biver
  • Patent number: 5277505
    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: December 31, 1992
    Date of Patent: January 11, 1994
    Assignee: Montgomery Elevator Company
    Inventors: Thomas R. Nurnberg, James J. VanMeenen
  • Patent number: 5255771
    Abstract: A combplate safety device for a passenger conveyor moving relative to a frame and having a combplate mounted on the frame and movable relative to the frame in response to an obstruction to the motion of the conveyor. The combplate safety device includes a ramped hold down member which cooperates with the frame to define a rearwardly opening notch within which a complementary portion of the combplate is releasably secured against the frame in a vertically downward direction. A pair of limit switches are actuated upon a predetermined relative displacement of the combplate and the frame for deactivating the conveyor in response to the obstruction to the motion, with a compressible member being posed between the combplate and the frame to prevent accumulated debris from interfering with operation of the safety device.
    Type: Grant
    Filed: July 18, 1991
    Date of Patent: October 26, 1993
    Assignee: Montgomery Elevator Company
    Inventors: Thomas R. Nurnberg, Richard D. Rohret
  • Patent number: 5224580
    Abstract: A power transmission system is provided for use in a platform drive mechanism of a passenger conveyor which has a conveyor frame and a plurality of laterally extending passenger platforms which are movably supported for driven movement about an endless path on the frame and engaged with a pair of circuitous drive chains disposed on opposite sides of the conveyor frame The transmission system has a multiple stage reduction gear drive positioned outboard of the passenger platforms and directly coupled between the drive chains and a motor for driving the passenger platforms in response to energization of the motor. A sprocket assembly has a drive shaft which extends laterally across the conveyor frame and mounts a pair of axially spaced sprockets.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: July 6, 1993
    Assignee: Montgomery Elevator Company
    Inventors: Thomas R. Nurnberg, Ernie Seggebruch
  • 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: 5194797
    Abstract: Procedure for regulating the stator flux and torque of an asynchronous motor by vector control in an imaginary space vector coordinate system, in which procedure the absolute value (.vertline..PSI..sub.s .vertline.) of the stator flux and the torque (M) are determined in said coordinate system, and in which procedure the calculation coordinates are in such a position that the rotor flux (.PSI..sub.r) is at least close to the real axis. In the procedure of the invention, the absolute value of the stator flux (.vertline..PSI..sub.s .vertline.) is regulated by means of the real part (u.sub.sr) of the stator voltage and the torque (M) by means of the stator frequency (f.sub.s). The calculation coordinates are held in said position by adjusting the imaginary part (u.sub.si) of the stator voltage.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: March 16, 1993
    Assignees: Kone Elevator GmbH, Montgomery Elevator Company
    Inventor: Matti Kahkipuro
  • Patent number: 5125494
    Abstract: A drive pulley system is provided for a handrail drive mechanism of a passenger conveyor. The system includes a pulley, with a handrail drive belt wrapped about the pulley for rotation therewith. A pair of disc-like members are disposed on opposite sides of the pulley to sandwich the pulley therebetween. The disc-like members have diameters greater than that of the pulley and are rotatable relative to the pulley, or the disc-like members may be fixed to the pulley and be fabricated of low friction material. The handrail is wrapped about the outer peripheries of the disc-like members, spacing the handrail from the drive belt, and thereby allowing differential linear movement between the handrail drive belt and the handrail due to the relative rotation between the disc-like members and the pulley, or due to slippage between the handrail and the low friction disc-like members.
    Type: Grant
    Filed: September 4, 1991
    Date of Patent: June 30, 1992
    Assignee: Montgomery Elevator Company
    Inventors: Thomas R. Nurnberg, Kenneth J. Smith
  • Patent number: 5115900
    Abstract: An air supporting system is provided for a handrail of a passenger conveyor and includes a plenum. An air supply provides air flow to the plenum. A guide is mounted on one side thereof to the plenum. The guide includes at least one air pocket. A handrail is slidably engaged with the guide. An orifice through the guide allows air to pass from the enclosed space to the air pocket. The air in the pocket generates pressure and lift to the handrail as it is driven to decrease friction between the handrail and the guide and to support the handrail above the guide.
    Type: Grant
    Filed: September 3, 1991
    Date of Patent: May 26, 1992
    Assignee: Montgomery Elevator Company
    Inventors: Thomas R. Nurnberg, Ernie G. Seggebruch, Kenneth J. Smith
  • Patent number: 4898263
    Abstract: An elevator self-diagnostic system monitors the operative status of various elevator components and upon sensing an error initiates action to bring the elevator car to a safe operating state. The system then logs the error. The diagnostic system then analyzes the error and the conditions prevailing at the time the error occurred and, if necessary, a corrective action is then taken to resolve the error. This allows the elevator system to be brought back into service more quickly than would otherwise be possible. Specifically, a number of tests are serially performed on various elevator components, such as the motor drive, the position sensors, etc. When an error, or fault, arises in a system component, a selt-diagnostic system logs a preselected error level which has been assigned to the particular fault. A preselected action is then taken according to the particular error.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: February 6, 1990
    Assignee: Montgomery Elevator Company
    Inventors: Bradley W. Manske, John M. Weber
  • Patent number: 4875553
    Abstract: A modular elevator cab construction is provided for assembly onto a platform of an elevator cage substantially from within the area of the cab. A rear wall panel, two side wall panels and front wall structures are assembled by simple complementary interengaging hanger devices on the backside of the adjacent walls for assembling the walls in proper right-angular juxtaposition. Anchoring mechanisms are provided between the platform and the lower edges of the wall panels. A drop ceiling support framework is hung from the top edges of the surrounding, assembled walls without the use of extraneous fastening means. A unitary canopy structure surmounts the walls and has a skirt embracing the upper end portions of the walls.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: October 24, 1989
    Assignee: Montgomery Elevator Company
    Inventors: Stephen W. Smith, Gilbert E. Londeen, Christopher Lair
  • Patent number: 4875552
    Abstract: A modular elevator cab construction is provided for assembly onto a platform of an elevator cage substantially from within the area of the cab. A rear wall panel, two side wall panels and front wall structures are assembled by simple complementary interengaging hanger devices on the backside of the adjacent walls for assembling the walls in proper right-angular juxtaposition.
    Type: Grant
    Filed: July 1, 1988
    Date of Patent: October 24, 1989
    Assignee: Montgomery Elevator Company
    Inventors: Stephen W. Smith, Gilbert E. Londeen, Christopher Lair
  • Patent number: 4779707
    Abstract: A modular elevator cab construction is provided for assembly onto a platform of an elevator cage substantially from within the area of the cab. A rear wall panel, two side wall panels and front wall structures are assembled by simple complementary interengaging hanger devices on the backside of the adjacent walls for assembling the walls in proper right-angular juxtaposition. Anchoring mechanisms are provided between the platform and the lower edges of the wall panels. A drop ceiling support framework is hung from the top edges of the surrounding, assembled walls without the use of extraneous fastening means. A unitary canopy structure surmounts the walls and has a skirt embracing the upper portions of the walls.
    Type: Grant
    Filed: July 29, 1986
    Date of Patent: October 25, 1988
    Assignee: Montgomery Elevator Company
    Inventors: Stephen W. Smith, Gilbert E. Londeen, Christopher Lair
  • Patent number: 4630026
    Abstract: A position indicating system for an elevator system includes a position indicator which operates in conjunction with an elevator control to provide an indication of elevator position and direction of travel by means of a display disposed within the elevator or at any position in the building. The position of the elevator is sensed by the elevator control and is converted into a multi-bit digital word which is transmitted serially over hoistway wires to the position indicator. The position indicator utilizes the multi-bit word to access a memory in which is stored a library of codes for character sets which may be indicated by the display. The proper codes are obtained from the memory and used to energize the display elements to illuminate the desired characters. By transmitting the position word in serial fashion to the position indicator, only six hoistway wires are required regardless of the number of position indicators utilized in the building.
    Type: Grant
    Filed: March 29, 1983
    Date of Patent: December 16, 1986
    Assignee: Montgomery Elevator Company
    Inventor: Michael D. Lewis
  • Patent number: 4364203
    Abstract: A modular sheet metal door structure consists of a plurality of upright modules of the same length which are fixedly connected to one another and have coplanar main webs forming one face of the door. A sheet metal sheath fixedly connected to side webs of the modules forms the other face of the door and has upright marginal portions which closely embrace the modules to form upright door sides. Identical sheet metal header means are fixedly secured to the ends of the modules to provide the ends of the door, and the header means are constructed to be detachably connected to stems by which the door may be suspended from track-mounted carriages for sidewise movement with either end of the door up.
    Type: Grant
    Filed: November 6, 1980
    Date of Patent: December 21, 1982
    Assignee: Montgomery Elevator Company
    Inventors: Reuel A. Seaholm, Stephen W. Smith
  • Patent number: 4313525
    Abstract: The power operated sliding door of an elevator car is provided with a mechanical safety interlock which permits the car door to be moved more than a critical distance from its closed position only when the car is in a landing zone. A pivoted interlock hook on the car door has a normal position in which it engages an interlock lug on the car frame when the door moves the critical distance from closed position. A movable element on the car door is driven to move the hook to a clearance position relative to the interlock lug. Drive of the movable element occurs when it contacts an interengaging member on the hatch door as the car door first starts to move from closed position in a landing zone.
    Type: Grant
    Filed: June 5, 1980
    Date of Patent: February 2, 1982
    Assignee: Montgomery Elevator Company
    Inventor: Emory W. McDonald
  • Patent number: 4246983
    Abstract: An elevator control utilizing a data processor and which is sequentially responsive to independent program blocks. The control includes a central processing unit, programed read only memory and random access memory, with input and output circuits for interconnection between the control, the elevator, elevator drive and the structure in which the elevator operates. The memory has a capacity to store information for elevator systems and structures with a wide variety of parameters. Specific addresses in the memory are assigned for the input information and for elements of status information which provide for interaction between different portions of the program. The assigned addresses are common to all elevator controls, enabling use of standard program blocks and minimizing the original design work required for each control.
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: January 27, 1981
    Assignee: Montgomery Elevator Company
    Inventor: John M. Bril
  • Patent number: 4219979
    Abstract: A decorative jamb structure for a side of an entranceway through a wall from a corridor to an elevator hatchway that has a sliding door in the hatchway. The jamb structure includes a shroud covering the end of the wall, the shroud having vertical side elements and a recessed connecting web that define a vertical central channel, a retaining flange which cooperates with the connecting web means of the shroud to define a downwardly open pocket at the upper end of the central channel, a finishing plate detachably secured in the lower end portion of the central channel which has a core and a decorative sheath projecting above the core to define an upwardly open pocket, and a decorative panel in the channel which has its end portions snugly seated in the pockets.
    Type: Grant
    Filed: December 15, 1978
    Date of Patent: September 2, 1980
    Assignee: Montgomery Elevator Company
    Inventors: Bradford Wiles, Reuel A. Seaholm
  • Patent number: 4151381
    Abstract: A switch mechanism senses the rotational direction of a rotating member so that reversal of direction acts through a control switch to energize or de-energize an electric circuit. The mechanism has a reciprocable switch actuator frictionally engaging the rotating member, whereby rotation of the rotating member in one direction pulls the actuator and rotation in the other direction pushes the actuator to operate the control switch. The rotating member may be a shaft, or it may be an idler wheel driven by the shaft, so that the rotational direction of the shaft is sensed and actuates the control switch. Herein, the switch mechanism senses the rotational direction of an output shaft in an escalator drive train. Accidental loss of motor torque when the escalator is in the "up" mode may permit reverse rotation of the output shaft as the escalator starts down under the weight of the passengers, but actuation of the control switch drops the up direction contactor and sets a brake.
    Type: Grant
    Filed: May 25, 1977
    Date of Patent: April 24, 1979
    Assignee: Montgomery Elevator Company
    Inventor: Henry J. Holuba
  • Patent number: 4064667
    Abstract: A decorative jamb structure for a side of an entranceway through a wall from a corridor to an elevator hatchway that has a sliding door in the hatchway. The jamb structure includes a shroud covering the end of the wall, the shroud having vertical side elements and a recessed connecting web that define a vertical central channel, a decorative panel removably mounted in the channel by means of headed studs impaling vertical keyhole openings in the web, and a base plate in the channel which is detachably secured to the web and supports the decorative panel with the studs in the narrow upper end portions of the keyhole openings.
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: December 27, 1977
    Assignee: Montgomery Elevator Company
    Inventor: Reuel A. Seaholm