Chemistry: electrical current producing apparatus – product – and – With pressure equalizing means for liquid immersion operation
Patent
1978-11-20
1979-12-04
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
With pressure equalizing means for liquid immersion operation
429 72, 251129, H01M 804
Patent
active
041773276
ABSTRACT:
A metal-air battery usually comprises a plurality of air-depolarizable cells within a battery case. The present invention provides that the battery case has a vent and a vent cover, where the vent cover is associated with an electrical actuator so as to open only when the battery is supplying electrical power to a load. In this manner, the metal-air battery is open to the atmosphere only when it is operating, and consequently is open to the possibility of harsh ambient conditions such as very high or very low ambient relative humidity, prolonged carbon dioxide exposure, and so on; and as a consequence, a long operating life for the battery which operates only intermittently during that life can be expected. In general, the vent cover is a flexible element which may either be a bimetal element or one having an elastic memory, and is biased to the vent-closed position but is associated with an electrically powered actuator so that, upon actuation of the battery to supply power to its own load, the vent cover actuator operates to cause movement of the vent cover to the vent-opened position. The source of electrical power for the vent cover actuator may be the battery itself, or it may be an auxiliary primary cell. Where the vent cover comprises a bimetal element, it is preferably an electrothermal actuator having a feeder element physically secured to the bimetal element.
REFERENCES:
patent: 2468430 (1949-04-01), Derksen
"Electrothermal Actuators Vie with Electromagnets and Solenoids," Product Engineering, Oct. 1975, pp. 19-21.
"Bimetal Actuators Cut Dip Noise," Machine Design, p. 30.
"Relay has no Coil-Actuators Heated to Open/Close Contacts," Automation, Aug. 1975, p. 17.
Mathews John P.
Smith Michael J.
Cornell Ronald S.
Glazer Martin M.
Nissenbaum Israel
P. R. Mallory & Co. Inc.
Skapars Anthony
LandOfFree
Metal-air battery having electrically operated air access vent c does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Metal-air battery having electrically operated air access vent c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal-air battery having electrically operated air access vent c will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-92136