Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Plural reciprocating or oscillating motors
Patent
1982-07-12
1985-02-05
Duggan, Donovan F.
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Plural reciprocating or oscillating motors
310 24, 310 49R, 310 35, H02K 3700
Patent
active
044980329
ABSTRACT:
Three radially extending push rods (26, 28, 30) make contact with an undulating cam surface on the periphery of a cam (10). The push rods (26, 28, 30) are driven inwardly by electrical solenoids (94, 96, 98) or fluid motors (106, 108, 110). At the end of each step, one of the push rods (26, 28, 30) is fully extended and in contact with the bottom of a valley region of the cam surface. The second push rod is in a partially extended position against a sloping surface between a peak and a valley. The third push rod is in a partially extended position against an oppositely sloping surface between a peak and a valley. The push rods (26, 28, 30) are located within the center plane of a relatively thin cam. In other installations, they are spaced axially apart or both circumferentially and axially apart. A cam surface twists (FIG. 7) as it extends axially to, in that manner, provide different cam positions under each of three axially spaced apart push rods. A plurality of cams are connected together. Plural cams ( 172, 174, 176) with the same number of lobes are staggered in position. Or, the number of lobes can differ from cam to cam (FIGS. 10-14), to provide a variety of step size possibilities.
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Barnard Delbert J.
Duggan Donovan F.
The Boeing Company
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