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US 7,921,971 B2Granted
Lockable manual release device for a brake
AssigneeChr. Mayr GmbH & Co. KG
InventorKarl Eiband
Life of this patent
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AssigneeChr. Mayr GmbH & Co. KG
InventorKarl Eiband
Estimating the term…
An electromagnetically released spring-loaded brake for cooperation with a motor or similar, with the manual release of the brake being effected in a tangential direction by means of a manual release lever 9, and with actuation of the manual release lever 9 causing armature disc 3 to be urged towards coil carrier 1 via three or more transmission levers 10 mounting rolls 16 and camming surfaces 14 on armature disc 3. As a result, the width of the air gap between armature disc 3 and coil carrier 1 is reduced so that rotor 6 with its hub 4 will be free to rotate between friction linings 7 on armature disc 3 and flange plate 8. The object was to create a lockable manual release feature the actuation of which requires a low manual force on manual release lever 9, is very flat and compact in structure, has a relatively small diameter and is actuated in a tangentional direction (FIG. 1).
An electromagnetically released spring-loaded brake for braking a rotary shaft, said brake including a tangentially moveable manual release lever and three or more transmission levers pivotally connected to said manual release lever, said transmission levers each having a roll mounted thereon, an armature disc, a flange plate, a coil carrier and a rotor, tangential movement of said manual release lever causing said rolls to engage cam surfaces on said armature disc to reduce an air gap between said armature disc and coil carrier to enable said rotor to freely rotate between friction linings on said armature disc and on said flange plate.
Dependencies are inferred from the claim text.