Pumps – Motor driven – Electric or magnetic motor
Patent
1982-12-03
1984-07-03
Look, Edward K.
Pumps
Motor driven
Electric or magnetic motor
3 17, 92 50, 128 1D, 128DIG3, 310 22, 310 33, F04B 4304
Patent
active
044576730
ABSTRACT:
A pump is described in which a flexible enclosure defines a pump chamber whose contents are expelled by movement of a pusher plate engaged with the enclosure. The pusher plate is moved by an elongate beam spring interconnecting the pusher plate with a solenoid drive mechanism. Solenoid actuation causes flexing of the beam spring from a relatively less stressed to a relatively more stressed position, the increased stress in the spring being relieved by pusher element movement. A preferred embodiment of the invention includes a symmetrical arrangement of opposed pusher elements and associated beam springs.
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patent: 3963380 (1976-06-01), Thomas et al.
patent: 4167046 (1979-09-01), Portner et al.
patent: 4384829 (1983-05-01), Conley et al.
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Portner, P. M., Oyer, P. E., Jassawalla, J. S., Miller, P. J., Skytte, K. W., LaForge, D. H., Petrek, J. S., Lee, J., Ream, A. K., and Billingham, M. E., "Development In Vivo Evaluation of Solenoid Actuated Left Ventricular As System", Proc. Annual Contractors Meeting, Device and Technology Branch, NHLBI, (1979), pp. 41-42.
Conley Michael G.
Petrek James S.
Look Edward K.
Novacor Medical Corporation
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