Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1979-04-16
1981-07-07
Duggan, Donovan F.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 83, 128 1D, 74 57, H02K 706
Patent
active
042777062
ABSTRACT:
A heart pumpconsisting of a housing having an inlet and an outlet and a diaphragm adapted to be reciprocated to cause flow of flood through the inlet and the outlet, a brushless dc motor mounted on the housing, the motor having a fixed ball screw nut and a ball screw mounted for axial movement with respect to the motor rotor while being fixed against rotation with respect to the rotor whereby rotation of the rotor causes the screw to move axially with respect to the motor thereby actuating the pump diaphragm.
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patent: 2956188 (1960-10-01), White
patent: 2978621 (1961-04-01), Martinek
patent: 3159758 (1964-12-01), Hemperly, Jr. et al.
patent: 3278774 (1966-10-01), Roller et al.
patent: 3402308 (1968-09-01), Henschke
patent: 3433983 (1969-03-01), Keistman et al.
patent: 3515966 (1970-06-01), De Valroger et al.
patent: 3548227 (1970-12-01), Woodward
patent: 3660704 (1972-05-01), Perkins
patent: 3829726 (1974-08-01), Nilsson
patent: 4198872 (1980-04-01), Metz
"Energy Transmission Through Intact Skin", Newgard et al., 12/72, pp. 71-90. _
Duggan Donovan F.
Nu-Tech Industries, Inc.
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