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Browse Prior Art Database

Pneumatic Positive Lock Detent

IP.com Disclosure Number: IPCOM000092380D
Original Publication Date: 1967-Dec-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Cross, RG: AUTHOR

Abstract

Detent 1 controls the relative position of two movable members 2 and 3. Either member can be released individually by actuation of detent 1, but in the power off condition, both are positively locked together.

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Pneumatic Positive Lock Detent

Detent 1 controls the relative position of two movable members 2 and 3. Either member can be released individually by actuation of detent 1, but in the power off condition, both are positively locked together.

Detent 1 includes cylindrical housing 4 having free piston 5 supported for axial movement in it. Piston 5 has a central bore that mounts detent fingers 6 and 7. Spring 8 urges such fingers outwardly against the racks 9 and 10 on members 2 and 3. In the neutral or power-off state, the spring force causes engagement of both fingers 6 and 7 and maintains piston 5 centered in the cylinder. When hydraulic pressure is applied through inlet port 11 and outlet port 12 is closed, piston 5 is forced toward the right against the bias force of spring 8, to disengage finger 6. Finger 7 is held firmly against its rack 10. Pressurizing inlet port 13 and closing outlet port 14 moves piston 5 to the left to disengage finger 7 while holding finger 6 in the locking position.

Operation of the detent can be obtained by moving piston 5 with an electrical solenoid rather than by fluid pressure, if desired.

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