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US 11,898,623 B2Granted
Linear drive
AssigneeSKF Motion Technologies AB
InventorMarcel Soltermann
Life of this patent
Estimating the term…
Abstract
A linear drive has a linear unit for carrying out a linear movement, a motor for the motorized driving of the linear unit, and a drive connection which extends from the motor as far as the linear unit. In order to ensure reliable operation even in the event of a power failure, it is proposed that the linear drive have a centrifugal brake which is rotationally coupled to the drive connection.
Claims8
A linear drive, comprising:
- a linear unit for carrying out a linear movement;
- a motor for a motorized driving of said linear unit, said motor having a motor shaft;
- a drive connection extending from said motor as far as said linear unit;
- a gear mechanism disposed in said drive connection;
- and
- a centrifugal brake rotationally coupled to said drive connection and being rigidly and permanently connected to said motor shaft, said centrifugal brake configured to limit a speed in said drive connection to a predetermined maximum speed or a maximum speed range, and said centrifugal brake being rigidly coupled to a portion of said drive connection disposed between said motor and said gear mechanism.
3 more elements
A linear drive, comprising:
- a linear unit for carrying out a linear movement;
- a motor for a motorized driving of said linear unit, said motor having a motor shaft;
- a drive connection extending from said motor as far as said linear unit;
- and
- a centrifugal brake rotationally coupled to said drive connection and being rigidly and permanently connected to said motor shaft, said centrifugal brake configured to limit a speed in said drive connection to a predetermined maximum speed or a maximum speed range;
- said centrifugal brake having at least one spring and at least two friction elements, being disposed with respect to each other in such a manner as to cause said at least two friction elements to be spaced apart from each other in an idle state and to be pressed on each other by centrifugal forces upon a rotation in a braking manner.
3 more elements
A scissor lift, comprising:
- a linear drive containing a linear unit for carrying out a linear movement,
- a motor for a motorized driving of said linear unit, said motor having a motor shaft,
- a drive connection extending from said motor as far as said linear unit,
- a gear mechanism disposed in said drive connection, and
- a centrifugal brake rotationally coupled to said drive connection and being rigidly and permanently to said motor shaft, said centrifugal brake configured to limit a speed in said drive connection to a predetermined maximum speed or a maximum speed range, and said centrifugal brake being rigidly coupled to a portion of said drive connection disposed between said motor and said gear mechanism.
2 more elements
Dependencies are inferred from the claim text.