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Browse Prior Art Database

Bistable Device

IP.com Disclosure Number: IPCOM000094319D
Original Publication Date: 1966-Sep-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Sizemore, JL: AUTHOR [+2]

Abstract

This bistable mechanical latch operable from two electrical inputs uses intersecting complementary latch blades 10 and 11. Unitary magnetic core 12 has a complex shape. Latch blade 10 is pivot mounted to magnetic core 12 at axis 13 and is normally urged to a counterclockwise limit of motion by spring 14. The counterclockwise motion limit is determined by engagement of throat portion 15 of blade 10 with limit surface 16 of blade 11. The latter is pivoted on magnetic core 12 about axis 17 and is biased counterclockwise by spring 18. The motion of blade 11 is limited by stop 23. When blade 10 is in its counterclockwise position against surface 16, blade 11 is held in its clockwise position by latching surfaces 19 on blade 10.

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Bistable Device

This bistable mechanical latch operable from two electrical inputs uses intersecting complementary latch blades 10 and 11. Unitary magnetic core 12 has a complex shape. Latch blade 10 is pivot mounted to magnetic core 12 at axis 13 and is normally urged to a counterclockwise limit of motion by spring 14. The counterclockwise motion limit is determined by engagement of throat portion 15 of blade 10 with limit surface 16 of blade 11. The latter is pivoted on magnetic core 12 about axis 17 and is biased counterclockwise by spring 18. The motion of blade 11 is limited by stop 23. When blade 10 is in its counterclockwise position against surface 16, blade 11 is held in its clockwise position by latching surfaces 19 on blade 10. On the other hand, blade 11, by its latching surfaces 20, is capable of holding blade 10 in its clockwise position, thus defining two states of operation. Nonmagnetic pads 24 and 25 prevent the blades from sticking to core 12. First and second input coils 21 and 22 control the operation of the intersecting blades 10 and 11. For example, pulsing coil 22 rotates blade 11 clockwise permitting blade 10 to move counterclockwise and thus storing blade 11 in the clockwise position. Pulsing coil 22 pivots blade 10 clockwise, thus releasing blade 11 to its counterclockwise position and latching blade 10 in its clockwise position.

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