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Self Regulating Constant Air Supply Pump

IP.com Disclosure Number: IPCOM000089542D
Original Publication Date: 1977-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Lingle, CH: AUTHOR

Abstract

In some instances it is desirable to regulate a pneumatic supply which is conventionally done with pressure regulators, air bleed-offs and the like. Additionally, it is desirable in certain instances, to prevent motor overload in case of regulator failure, to provide some kind of coupling between the motor and the compresser so as to decouple the one from the other, or to shut the motor off when the pressure builds up such that the motor is in an overload or overheat condition.

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Self Regulating Constant Air Supply Pump

In some instances it is desirable to regulate a pneumatic supply which is conventionally done with pressure regulators, air bleed-offs and the like. Additionally, it is desirable in certain instances, to prevent motor overload in case of regulator failure, to provide some kind of coupling between the motor and the compresser so as to decouple the one from the other, or to shut the motor off when the pressure builds up such that the motor is in an overload or overheat condition.

The figure illustrates a self-regulating constant supply pneumatic pump in which there is no physical connection between the motor and the pump. A motor 10 has a disc 11 on its output shaft 12, the disc having a plurality of arcuately shaped magnets 13 about its periphery. A cradle 14, pivoted as at 15, has its opposite ends connected to piston rods 16 and 17 associated with air pumps 18 and 19, respectively, the air pumps having a common discharge line 20 which leads to an outlet 21. The cradle 14 includes a pair of magnets 22 and 23 which are disposed 180 Degrees from each other, the magnets 22 and 23 being of opposite polarity.

As the motor 10 turns, two sets of magnets on the disc and cradle are aligned, one of the magnet sets on the motor disc being attracted to a set of magnets on the cradle, while the magnets 180 Degrees away are repelled by each other. The attraction and repulsion causes the cradle 14 to pivot, depressing the piston in one o...