Horology: time measuring systems or devices – Controlled by a disparate device
Patent
1993-03-23
1994-08-30
Miska, Vit W.
Horology: time measuring systems or devices
Controlled by a disparate device
368 97, 92143, 188298, 251122, G09F 100, F01B 2908, F16F 904
Patent
active
053434447
ABSTRACT:
A pneumatic timer applicable to electric contactors and has bellows whose air intake is controlled by a limited duct with a variable section and length. The limited duct is established by a radial hole made in flange immobilized with regard to the adjustment knob, that communicates hole of the base or core of the bellows, with the air intake hole made in the core of the adjustment knob, the flange preferably having a transversal or peripheral groove as of the radial hole. When the adjustment knob is placed in a certain position, the timing is governed in terms of the limited duct implied by the length of the transversal groove, which may have a section gradually increasing towards the radial hole. The air duct can also be gauged with the thread of a screw whose head forms a variable annular duct with the wall of an axial truncated-cone hole provided in the core.
REFERENCES:
patent: 2662594 (1953-12-01), Schaefer
patent: 3084865 (1963-04-01), Fleer et al.
patent: 3178524 (1965-04-01), Frisk
patent: 3213333 (1965-10-01), Mikina et al.
patent: 3249716 (1966-05-01), Hatou et al.
patent: 3797616 (1974-03-01), Faffart
patent: 4256021 (1981-03-01), Graninger
Agut, S.A.
Miska Vit W.
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