Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
151 words
A bistable electromechanical transducer comprising in combination a stator including a core and an energizing winding wound about said core, said core being separated at its ends to form a generally circular air gap, the periphery of said air gap including at least two stator pole faces; means for energizing said winding with low duty cycle input pulses; a rotor including a permanent magnet and a pair of discs of high permeability material secured to each end of said magnet in substantial parallel relationship to one another, each of said discs having a plurality of pole faces, means including at least one holding pole for maintaining the rotor in either of its stable positions during the period between said input pulses wherein the rate of change of the permeance of the air between said holding pole and said stator is substantially constant as said rotor approaches either of its stable positions.
Claim 2
Dependent Claim
151 words
A bistable electromechanical transducer comprising in combination a stator including a core and an energizing winding wound about said core, said core being separated at its ends to form a generally circular air gap, the periphery of said air gap including at least two stator pole faces; means for energizing said winding with low duty cycle input pulses; a rotor including a permanent magnet and a pair of discs of high permeability material secured to each end of said magnet in substantial parallel relationship to one another, each of said discs having a plurality of pole faces, means including at least one holding pole for maintaining the rotor in either of its stable positions during the period between said input pulses wherein the rate of change of the permeance of the air between said holding pole and said stator is substantially constant as said rotor approaches either of its stable positions.
Claim 3
Dependent Claim
101 words
The bistable electromechanical transducer of claim 1 capable of operation at very low electrical energy and wherein said means for maintaining the rotor in either of its stable positions comprises a holding pole being separated from the portions of the stator to which it is attracted by a sUbstantially constant radial air gap, the rate of change of the permeance between said holding pole and said portions of said stator to which pole is attracted being substantially constant as said rotor approaches either of its stable positions, whereby said rotor is free of any stable position between said two stable positions.
Claim 4
Dependent Claim
70 words
The bistable electromechanical transducer of claim 2 further comprising means for preventing said rotor from becoming temporarily locked in a neutral center position between said bistable positions, said means including the arc length of said rotor pole faces being great enough so that the total permeance of the air gap between said rotor and said stator remains substantially constant as the rotor moves from one bistable position to the other.
Claim 5
Dependent Claim
56 words
The bistable electromechanical transducer of claim 3 wherein said means for preventing said rotor from becoming temporarily locked in a center position comprises rotor pole faces having an arc length such that regardless of the position of the rotor substantially all of the leakage flux from the stator pole faces impinges upon the rotor pole faces.
Claim 6
Dependent Claim
139 words
A bistable electromechanical transducer comprising a stator including a high permeability core and an energizing winding wound about said core, said core being separated at its ends to form an air gap, the periphery of said gap including two stator pole faces; means for energizing said winding with input pulses; a rotor including a permanent magnet and a pair of high permeability armatures secured to each end of said magnet in substantial parallel relationship to one another, each of said armatures having two of pole faces, and means including at least one holding pole for maintaining the rotor in either of its stable positions during the period between said input pulses wherein the rate of change of the magnetic permeance between said holding pole and said stator is substantially constant as said rotor approaches either of its stable positions.
Claim 7
Dependent Claim
139 words
A bistable electromechanical transducer comprising a stator including a high permeability core and an energizing winding wound about said core, said core being separated at its ends to form an air gap, the periphery of said gap including two stator pole faces; means for energizing said winding with input pulses; a rotor including a permanent magnet and a pair of high permeability armatures secured to each end of said magnet in substantial parallel relationship to one another, each of said armatures having two of pole faces, and means including at least one holding pole for maintaining the rotor in either of its stable positions during the period between said input pulses wherein the rate of change of the magnetic permeance between said holding pole and said stator is substantially constant as said rotor approaches either of its stable positions.
Claim 8
Dependent Claim
72 words
The bistable electromechanical transducer of claim 5 wherein said holding pole has a predetermined arc length and oscillates from one stable position to the other adjacent a channel formed in said stator, said channel having an opening greater than the arc length of the holding pole, whereby the magnetic permeance between rotor and stator increases as the rotor rotates beyond the central or neutral position thereof toward one of said stable positions.