Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1989-10-16
1991-08-20
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 83, 192141, 74 182, 74 8915, 744248R, H02K 706, F16H 2920
Patent
active
050417487
ABSTRACT:
An actuator (10) comprises a housing having sections (11, 11') joined by a band clamp (12). A high torque, low speed motor (14) is provided in the housing and has a rotor (17) associated with a ballscrew rod (18) which is received in the hollow end of a ballnut/rod (20). The ballscrew rod (18) and the ballnut/rod (20) are provided with grooves (19, 20 respectively) between which ceramic balls (20) are entrained. The rod (20) translates in only a rectilinear direction and the grooves (19) of the ballscrew rod (18) are protected from the environment by the ballnut/rod (20) which covers the free end of the ballscrew rod (18).
REFERENCES:
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patent: 2918827 (1959-12-01), Brown
patent: 3161074 (1964-12-01), Korthaus et al.
patent: 3666704 (1972-05-01), Paine et al.
patent: 3682283 (1972-08-01), Sato
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patent: 4560894 (1985-12-01), Stoll
patent: 4858481 (1989-08-01), Abraham
Saginaw Steering Gear Division, General Motors Corporation, Sep. 6-16, 1960, pp. 12, 13, 16, 17.
Haszko Dennis R.
Stephan Steven L.
Sundstrand Corporation
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