Machine element or mechanism – Gearing – Rotary bodies
Patent
1994-12-05
1996-03-26
Herrmann, Allan D.
Machine element or mechanism
Gearing
Rotary bodies
74459, 470 2, F16H 2522
Patent
active
055011187
ABSTRACT:
A ball nut and screw assembly has a ball screw mounting a nut assembly comprising a pair of ball nuts with the respective grooves of the screw and nut defining a pair of ball train accommodating axially spaced helical raceways. At least one preloading member is mounted between the nuts for imposing a preload on the raceways. External ball return tubes for each of the nuts communicate with opposite ends of each of the raceways for recirculating balls from one end of each raceway to the other. A unitary ball return tube clamp plate extends across the preloading member to clamp each of said ball return tubes to their respective nuts and fasteners extend between each of the nuts and the ends of the clamp plate for securing the return tubes in position while permitting the clamp plate to retain the nuts in preloaded condition.
REFERENCES:
patent: 2779207 (1957-01-01), Hamilton
patent: 3059494 (1962-10-01), Grabowski et al.
patent: 3062070 (1962-11-01), Beatty et al.
patent: 3124969 (1964-03-01), Grabowski et al.
patent: 3372605 (1968-03-01), Orner
patent: 3703835 (1972-11-01), O'Connor et al.
patent: 3720116 (1973-03-01), Better et al.
patent: 3722312 (1973-03-01), Better et al.
Herrmann Allan D.
Thomson Saginaw Ball Screw Co., Inc.
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