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US 11,111,105 B2Granted
Compliant shear layer for elevator termination
AssigneeOtis Elevator Company
InventorsWalter Thomas Schmidt, Joseph C. Rampone, Daniel A. Mosher
Life of this patent
Estimating the term…
Abstract
A termination device for a suspension member of an elevator system includes a housing and a wedge assembly located in the housing. The wedge assembly includes a wedge interactive with the housing to apply a clamping force to the suspension member in response to an axial load acting on the suspension member and a compliant shear element secured to the wedge or the suspension member and configured to reduce shear loads on the suspension member.
Claims13
A termination device for a suspension member of an elevator system comprising:
- a housing;
- and
- a two wedge assemblies disposed in the housing and located at opposing sides of the suspension member, each wedge assembly including:
- a wedge interactive with the housing to apply a clamping force to the suspension member in response to an axial load acting on the suspension member;
- and
- a compliant shear element secured to the wedge or the suspension member and configured to reduce shear loads on the suspension member;
- wherein the compliant shear element is secured to the wedge via two or more tabs disposed at one of the compliant shear element or a wedge inner surface of the wedge, the two or more tabs engageable with two or more slots in the other of the wedge inner surface or the compliant shear element;
- wherein the compliant shear element is formed from one of a thermoplastic urethane or elastomeric material;
- wherein the compliant shear element includes a plurality of friction-enhancing features to produce a desired frictional force between the compliant shear element and the suspension member, the plurality of friction-enhancing features including a plurality of faceted elements arrayed across a lateral width of the compliant shear element.
6 more elements
An elevator system comprising:
- a hoistway;
- an elevator car disposed in the hoistway;
- a suspension member operably connected to the elevator car to suspend and/or drive the elevator car along the hoistway;
- and
- a termination device disposed in the hoistway and operably connected to a suspension member end of the suspension member, the termination device including:
- a housing;
- and
- a two wedge assemblies disposed in the housing and located at opposing sides of the suspension member, each wedge assembly including:
- a wedge interactive with the housing to apply a clamping force to the suspension member in response to an axial load acting on the suspension member;
- and
- a compliant shear element secured to the wedge or the suspension member and configured to reduce shear loads on the suspension member;
- wherein the compliant shear element is secured to the wedge via two or more tabs disposed at one of the compliant shear element or a wedge inner surface of the wedge, the two or more tabs engageable with two or more slots in the other of the wedge inner surface or the compliant shear element;
- wherein the compliant shear element is formed from one of a thermoplastic urethane or elastomeric material;
- wherein the compliant shear element includes a plurality of friction-enhancing features to produce a desired frictional force between the compliant shear element and the suspension member, the plurality of friction-enhancing features including a plurality of faceted elements arrayed across a lateral width of the compliant shear element.
11 more elements
Dependencies are inferred from the claim text.