192 clutches and power-stop control – Clutches – Axially engaging
Patent
1974-11-04
1976-03-30
Herrmann, Allan D.
192 clutches and power-stop control
Clutches
Axially engaging
64 237, 74378, 74447, 192 21, 192 51, 192108, F16D 1100
Patent
active
039468445
ABSTRACT:
The invention is an improved clutching means for tapping attachments and particularly adaptable in attachments having free axial float. Direct and reverse drive is provided for by way of planetary gears for driving in direct and reverse drive in the exemplary attachment in which the clutching means is embodied. An adjustment is provided for depth. Spring biased clutch drive members are provided for both the direct and reverse drive providing a narrow, neutral position. Each clutch driver member is in the form of a sleeve having a ball race carrying driving balls interposed between axial splines on a driving part and on the driven spindle. The splines have arcuate side surfaces to confrom to the driving balls providing for substantially frictionless drive in both direct and reverse modes, the balls being free to roll. The splines are especially configurated to facilitate engagement of the balls with them. In one form the splines have slanted or inclined end surfaces to achieve this purpose and in a preferred form the splines have arcuate side and end surfaces forming a continuous oval shaped track.
REFERENCES:
patent: 583655 (1897-06-01), McCann
patent: 2291151 (1942-07-01), Dunn
patent: 3050321 (1962-08-01), Howe et al.
patent: 3145401 (1964-08-01), Burg
patent: 3325837 (1967-06-01), Hartmann
patent: 3521314 (1970-07-01), Steiner
patent: 3651708 (1972-03-01), Muller
patent: 3656858 (1972-04-01), Eriksson
patent: 3797276 (1974-03-01), Orain
Herrmann Allan D.
Tapmatic Corporation
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