US 2002/0162411 A1 · Lock plate transmission

Abstract

A transmission for transmitting rotary power in forward and reverse directions from a programmable source of input motion such as an electric motor uses individually rotatable coaxially mounted lock plates each having a pawl receiving socket therein providing access to an arcuate slot of selected angular length permits engagement and disengagement of the transmission only when input torque is applied thereto in forward and reverse directions to rotate the transmission input gear through pre-defined angles. The pawl is part of a frictionally driven shift arm on which a driven shift gear is also mounted whereby the driven shift gear is pivotally moved into and out of engagement with the output gear or gears of the transmission when the pawl is pivotally moved out of or into the sockets in the lock plates. Rotation limit stops are provided on the lock plates at selected angular positions so that the transmission can be engaged or disengaged for transmission of torque in both forward and reverse directions only when the motor is rotated through a sequence of predetermined angles in predetermined directions.

Claims10

Dependent claims

A transmission for transmitting rotary power in forward and reverse directions from a source of rotary power to a load comprising:

a) a rotary input gear for coupling to said source of rotary power;
b) a rotary output gear;
c) a clutch shaft;
d) a clutch gear rotatably mounted on said clutch and drivingly engaged with said input gear;
e) at least one lock plate rotatably mounted on said clutch shaft in frictional engagement with said clutch gear, said lock plate having a socket therein including a radially extending gate and an arcuate slot of first selected angular length accessed by said gate;
f) a shift arm pivotally mounted coaxially with said input gear and frictionally engaged with said input gear, said shift arm including a pawl arcuately moveable into and out of engagement with said lock plate socket;
and
g) a shift gear engaged with said input gear, said shift gear being mounted on said shift arm and arcuately moveable with said shift arm between positions of engagement and disengagement with said output gear as said pawl moves into and out of said socket.

5 more elements

Dependencies are inferred from the claim text.

Lock plate transmission

Life of this patent

Lock plate transmission

Life of this patent

Abstract

Claims10