Inventio Ag

Karl B Orndorff

Eileen W Rossman

Miles P Lamb

Michael G Miller

Richard H Pilsbury

Scott Carlton Conrey

Arnold M Morris

Lawson Randall S

J Warren Barkell, Jr

Randall S Lawson

Daphne D'Zurko

A safety plank assembly for mounting on a bottom of an elevator car in a traction-type elevator system includes a pair of parallel extending plank beams connected by a cross support member. A rope sheave is rotatably mounted at each of opposed ends of the plank beams to define a diagonal rope path through the assembly for underslung support of the elevator car. Traction weights and balancing weights can be attached to the beams and provision is made for mounting safety equipment.

Elevator safety plank assembly

A self-balancing synchronization assembly has a support beam pivotally mounted on a guide rail adjacent a hydraulic elevator jack. A synchronization bracket is pivotally mounted at one end of the beam and a pair of synchronization cables is connected between the bracket and a telescoping part of the jack. A return cable is connected between the other end of the beam and the hoistway pit to balance the load and includes a turnbuckle for retensioning the synchronization cables. A second synchronization bracket can be pivotally mounted at the one end of the support beam to synchronize a three-stage jack.

Self-balancing synchronization assembly for a hydraulic elevator

A wear detector for a suspension rope having a plurality of load bearing strands covered by a sheath includes a sensor at a surface of the sheath. The sensor senses a characteristic of the rope representing a predetermined amount of wear of the sheath. The sensed characteristic can be electrical contact with the strands, distance from the surface of the sheath to the strands, or change of color of the sheath surface.

Suspension rope wear detector

A plunger guide for a telescopic jack in a hydraulic elevator includes a crenelated guide rail with a top surface, two opposing side surfaces which are perpendicular to the top surface, and first and second flanged projections respectively projecting from the first and second side surfaces. The plunger guide also includes a support having a bracket and a lateral segment which connects the bracket to the plunger to be guided. The bracket includes a first set of bearings arranged for gliding on the top surface of the guide rail, a second set of bearings for gliding on both side surfaces of the guide rail, and a third set of bearings for gliding on a bottom surface of each of the first and second flanged projections which faces away from the top surface.

Plunger guide for a telescopic jack in a hydraulic elevator

A hydraulic elevator having a hydraulic jack which acts directly on the elevator car. To reduce the amount of building work associated with this elevator concept, the hydraulic jack projects through the car floor into the car. The jack and the car are fastened together at the car floor by a supporting plate attached to the jack cylinder. If the jack is fitted with a mechanical synchronization device, the ends of the ropes or chains which until now have been fastened to the building also pass upwards through the car to a crossbeam to which they are fastened.

Hydraulic elevator

An elevator car having a clutch pivotally carried by a car door and biased to an operative position in which drive rollers of an adjacent hatch door may be engaged by 'open' and 'close' vanes. A first parallelogram linkage operates the close vane in direct response to car door position, in a direction opposite to initial car door opening movement. A second parallelogram linkage, associated with the open vane, is operated when the open vane contacts a hatch door roller at the start of door opening, to unlock the car door by retracting a plunger from an opening in the car door sill. The car door clutch bias may be manually overcome by authorized maintenance personnel, to disengage the car door from a hatch door.

Elevator car with improved car door clutch

An elevator system including a door post having inner and outer sides, and a hall lantern assembly fixed to the inner side. The door post includes a jamb defining upper and lower openings, and the hall lantern assembly includes upper and lower lenses which are resiliently biased to project through the upper and lower openings, respectively, in operating positions of the lenses. The upper and lower lenses have service positions achievable by depressing a lens against the bias, and then slidably moving the lens in a vertical direction, with the service positions of the upper and lower lenses enabling the hall lantern assembly to be serviced through the upper and lower openings in the jamb.

Growing community of inventors

Gettysburg, PA, United States of America

Karl B Orndorff