Electromagnetic-released, multi-disc enclosed safety brake
AssigneePt Tech, LLC
InventorsRichard E. Cole, Jr., Timothy A. Clapp, David A. Farwell
Life of this patent
Estimating the term…
Abstract
An electromagnetic-released, multi-disc, enclosed safety brake for primary use in offshore marine winch applications includes a stationary coil housing that encompasses springs that apply pressure to an armature, a pair of separator plates, three friction plates and a stationary endplate. The multi-disc brake is released by means of a DC voltage applied to the brake coil. The excited coil generates an electromagnetic force that attracts the armature across an air-gap thus reducing the spring force applied to the disc pack. The brake is applied when the DC voltage is removed from the brake coil. Various structures and methodologies for reducing vibrations in the brake are also provided.
Claims19
A multi-disc electric motor brake, comprising:
- a motor mounting plate;
- an electromagnetic coil attached to said motor mounting plate;
- an armature in operative engagement with said electromagnetic coil;
- a plurality of springs in axially biasing engagement with said armature;
- a hub received on an end of a motor shaft, said hub engaging a plurality of friction rotors;
- a plurality of torque reaction members attached to said mounting plate and in engagement with a plurality of separator stators interleaved with said friction rotors and forming a disc pack;
- an endplate attached to said torque reaction members and axially encapsulating said disc pack;
- and
- disc pack wear adjustment shims interposed between said endplate and said torque reaction members and further comprising an externally visible disc pack wear indicator comprising a thread form to manually release the brake by overcoming said springs in axially biasing engagement with said armature.
A multi-disc electric motor brake, comprising:
- a motor mounting plate;
- an electromagnetic coil attached to said motor mounting plate;
- an armature in operative engagement with said electromagnetic coil;
- a plurality of springs in axially biasing engagement with said armature;
- a hub received on an end of a motor shaft, said hub engaging a plurality of friction rotors;
- a plurality of torque reaction members attached to said mounting plate and in engagement with a plurality of separator stators interleaved with said friction rotors and forming a disc pack;
- an endplate attached to said torque reaction members and axially encapsulating said disc pack;
- and
- a friction-damped linkage interposed between said armature and said mounting plate.
Dependencies are inferred from the claim text.