Fluid handling – Systems – Programmer or timer
Patent
1974-12-02
1976-02-10
Cohan, Alan
Fluid handling
Systems
Programmer or timer
13762547, F15C 316
Patent
active
039372529
ABSTRACT:
The impulse signal producing device comprises a rotatable sleeve which has several small holes and/or slots, a supply body which is formed with air ejecting openings at positions inside the rotating paths of the small holes and/or slots, and a receiving cover which is formed with output ports at positions corresponding to the air ejecting openings. The slot is extended in the circumferential direction of the rotatable sleeve, and one end of the slot in the rotating direction is arranged on the same generating line of the rotatable sleeve as that including the position of the small hole. Air ejected from the openings passes through the small hole and slot of the rotatable sleeve and flows out of the output ports, to produce output pulses. By varying the length of the slot in the circumferential direction, the pulse width can be varied. By varying the arrangement of the small holes and slots, it is possible to vary the phases of the output pulses or to produce several pulses at the same time.
REFERENCES:
patent: 2851648 (1958-09-01), Reger
patent: 3469602 (1969-09-01), Wiley
Cohan Alan
Mikuni Kogyo Co., Ltd.
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