Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1997-05-15
1999-08-31
Herrman, Allan D.
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74 8914, 74 8915, 254 92, 254101, 403 57, 464132, 464134, F16H 2520, B66F 714, F16D 316
Patent
active
059439190
ABSTRACT:
A linear ball screw actuator assembly and a method of constructing it. The actuator assembly has a housing for a ball screw and ball nut which together define a raceway between them for a recirculating ball bearing train of balls, one of the screw and nut being reciprocable along a z axis responsive to rotation of the other and being adapted to be coupled to a member to be actuated. The housing has gearing for transmitting rotation to the other of the ball and screw nut in a direction lateral to the z axis. A base for the housing is spaced from the housing and has a base journal journaling the first pin extending along a first pin axis laterally perpendicular to the z axis. The housing has a housing journal journaling a second pin extending crosswisely perpendicular to the first pin. The second pin axis intersects the z axis and x axis. The pins are coupled in a manner to permit relative rotation of the base and housing about either pin axis, or both, to obviate misalignment problems.
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patent: 2396781 (1946-03-01), Glynn
patent: 4188877 (1980-02-01), Khan
patent: 4365488 (1982-12-01), Mochida et al.
patent: 5062730 (1991-11-01), Tomii et al.
patent: 5655636 (1997-08-01), Lang et al.
patent: 5722304 (1998-03-01), Allen
Herrman Allan D.
Thomson Saginaw Ball Screw Company LLC
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