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Browse Prior Art Database

Pneumatic Time Delay Mechanism

IP.com Disclosure Number: IPCOM000074322D
Original Publication Date: 1971-Apr-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 49K

Publishing Venue

IBM

Related People

Block, EE: AUTHOR

Abstract

This adjustable pneumatic time delay mechanism is formed by a stack of discs 10a to 10d. The uppermost disc 10a has an air inlet conduit 12 and the lowermost disc 10d has an air outlet conduit 14; and the delay between the time that a pulse of air is applied to conduit 12 and the time it reaches conduit 14 may be changed by adjustably rotating the discs 10a to 10d with respect to each other.

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Pneumatic Time Delay Mechanism

This adjustable pneumatic time delay mechanism is formed by a stack of discs 10a to 10d. The uppermost disc 10a has an air inlet conduit 12 and the lowermost disc 10d has an air outlet conduit 14; and the delay between the time that a pulse of air is applied to conduit 12 and the time it reaches conduit 14 may be changed by adjustably rotating the discs 10a to 10d with respect to each other.

Each of discs 10a to 10d has a hole 16 through it, and conduits 12 and 14 are press fitted into the holes 16 in uppermost disc 10a and lowermost disc 10d, respectively. The discs 10a to 10d are identical and have accurate channels 18 on their lower surfaces. The channel 18 in each disc connects at one end to the hole 16 in the disc and extends in a clockwise direction from the hole 16 for less than 360 degrees, looking downwardly on the disc. Each of the discs is provided on its upper surface with a gate 20 adjacent to its hole 16 which fits within the channel 18 of the disc located immediately thereabove. The gates 20 are located in the clockwise direction from the holes 16, looking downwardly on the disc. A bolt 22 extends through central openings 24 in the discs and has a nut 26 thereon for holding the discs assembled in a stack. The delay time of a pulse of air applied onto conduit 12 with respect to its time of exit from conduit 14 may be increased by rotatably adjusting discs 10a to 10d so that the openings 16 are moved farther and farther...