Oscillatory compressor

Claim 2

A compressor comprising: a headplate; a high-pressure chamber means mounted beneath said headplate; a cylinder on said high-pressure chamber means with an end open thereto; pressure-responsive valve means for closing said end of said cylinder open to said high-pressure chamber for pressures in said cylinder below a predetermined value and for opening said cylinder end to said pressure chamber over said predetermined pressure; an open-ended tubular piston means axially slidably fitted in said cylinder through the end thereof opposite said pressure chamber end and having a one-way valve means for alternatively providing communication and closing passage between the interior of said tubular piston means and said cylinder respectively allowing passage of fluid through said piston means into space in said cylinder between said piston and said pressure-responsive valve means and for preventing reverse flow of fluid respectively as said piston means moves away and toward said pressure-responsive valve means; pulsating drive means for reciprocating said piston means comprising a permanent magnet with a pair of concentric poles spaced by an annular airgap and having a movable coil extending into said airgap; the uppermost of said concentric poles being in the form of a depending sleeve surrounding the other of said concentric poles and depending therebeneath, the lower extremity of said depending sleeve forming a seat for an enclosing casing extending therefrom to said headplate; means comprising a mounting plate for supporting said coil and drivingly securing it to said piston means; said mounting plate including a plurality of axially extending fingers about which said coil is wound; opposed spring means for supporting said coil and piston means centered respectively partially axially out of said airgap and said cylinder; means for electrically energizing said coil with an alternating current for alternately biasing said coil out of and into said airgap against the centering action of said opposed spring means whereby said piston means is reciprocated toward and away from the end of said cylinder open to said high-pressure chamber respectively compressing fluid in said cylinder to a pressure above said predetermined pressure and alternatively drawing fluid into said cylinder through said piston means; said electrical coil-energizing means comprising a conductive top spring seat on said mounting plate insulated therefrom, a conductive annular bottom spring seat on said high-pressure chamber means insulated therefrom, said spring means including a spring of conductive material compressed between said spring seats and providing a good electrical conductor therebetween, means electrically connecting said coil to said top spring seat, and means including a sliding contactor engaging said bottom spring seat for connecting a source of AC electrical energization thereto.

Claim 3

A compressor as defined in claim 1 wherein said mounting plate is perforated to provide for free passage of fluid therethrough from space exterior to said coil and piston means into space interiorly thereof.

Claim 4

A compressor as defined in claim 1 having means for withdrawing compressed fluid from said high-pressure chamber means.

Claim 5

A compressor as defined in claim 1 having a sealed container around said compressor, means for supplying gaseous fluid into said container, and means for withdrawing compressed fluid from said high-pressure chamber and out of said container.

Claim 6

A compressor as defined in claim 4 having an opposed compressed spring means resiliently supporting said compressor in said container.

Claim 7

A compressor comprising: an end plate; means including a headplate secured to said end plate and forming a high-pressure chamber therewith; a cylinder on said headplate with an end open into said high-pressure chamber and having a valve seat on said open end; pressure-responsive valve means engaging said valve seat for closing said end of said cylinder open To said high-pressure chamber for pressures in said cylinder below a predetermined value and for opening said cylinder end to said high-pressure chamber above said predetermined pressure; an open-ended tubular piston means axially slidably fitted in said cylinder through the end thereof opposite said pressure chamber end and having a one-way value means for alternatively providing communication and closing passage between the interior of said tubular piston means and said cylinder respectively allowing passage of fluid through said piston means into space in said cylinder between said piston and said pressure-responsive valve means and for preventing reverse flow of fluid respectively as said piston means moves away from and toward said pressure-responsive valve means; pulsating drive means for reciprocating said piston means comprising a permanent magnet with a pair of concentric poles spaced by an annular airgap and having a movable coil extending into said airgap, the uppermost of said concentric poles being in the form of a depending sleeve surrounding the other of said concentric poles and depending therebeneath, the lower extremity of said depending sleeve forming a seat for an enclosing casing extending therefrom to said headplate; means comprising a mounting plate for supporting said coil and drivingly securing it to said piston means, said mounting plate including a plurality of axially extending fingers about which said coil is wound; said counting plate being perforated to provide for free flow of fluid therethrough from space exterior to said coil and piston means into space interiorly thereof; opposed spring means for supporting said coil and piston means centered respectively partially axially out of said airgap and said cylinder; means for electrically energizing said coil with an alternating current whereby said piston means is reciprocated toward and away from the end of said cylinder open to said high-pressure chamber respectively compressing fluid in said cylinder to a pressure above said predetermined pressure and causing said pressure-responsive valve to open and alternately drawing fluid into said cylinder through said piston means and one-way valve by way of said perforated mounting plate; said electrical coil energizing means comprising an insulating bushing on said mounting plate and a conductive top spring seat thereon insulated thereby from said mounting plate, another insulating bushing on said headplate and a conductive annular bottom spring seat thereon insulated thereby from said headplate, said opposed spring means including a spring of conductive material compressed between said spring seats, means electrically connecting said coil to said top spring seat, and means including a sliding contactor engaging said bottom spring seat for connecting an AC source of electrical energization thereto.

Claim 8

A compressor comprising: an end plate; means including a headplate secured to said end plate and forming a high-pressure chamber therewith; a cylinder on said headplate with an end open into said high-pressure chamber and having a valve seat on said open end; pressure-responsive valve means engaging said valve seat for closing said end of said cylinder open To said high-pressure chamber for pressures in said cylinder below a predetermined value and for opening said cylinder end to said high-pressure chamber above said predetermined pressure; an open-ended tubular piston means axially slidably fitted in said cylinder through the end thereof opposite said pressure chamber end and having a one-way value means for alternatively providing communication and closing passage between the interior of said tubular piston means and said cylinder respectively allowing passage of fluid through said piston means into space in said cylinder between said piston and said pressure-responsive valve means and for preventing reverse flow of fluid respectively as said piston means moves away from and toward said pressure-responsive valve means; pulsating drive means for reciprocating said piston means comprising a permanent magnet with a pair of concentric poles spaced by an annular airgap and having a movable coil extending into said airgap, the uppermost of said concentric poles being in the form of a depending sleeve surrounding the other of said concentric poles and depending therebeneath, the lower extremity of said depending sleeve forming a seat for an enclosing casing extending therefrom to said headplate; means comprising a mounting plate for supporting said coil and drivingly securing it to said piston means, said mounting plate including a plurality of axially extending fingers about which said coil is wound; said counting plate being perforated to provide for free flow of fluid therethrough from space exterior to said coil and piston means into space interiorly thereof; opposed spring means for supporting said coil and piston means centered respectively partially axially out of said airgap and said cylinder; means for electrically energizing said coil with an alternating current whereby said piston means is reciprocated toward and away from the end of said cylinder open to said high-pressure chamber respectively compressing fluid in said cylinder to a pressure above said predetermined pressure and causing said pressure-responsive valve to open and alternately drawing fluid into said cylinder through said piston means and one-way valve by way of said perforated mounting plate; said electrical coil energizing means comprising an insulating bushing on said mounting plate and a conductive top spring seat thereon insulated thereby from said mounting plate, another insulating bushing on said headplate and a conductive annular bottom spring seat thereon insulated thereby from said headplate, said opposed spring means including a spring of conductive material compressed between said spring seats, means electrically connecting said coil to said top spring seat, and means including a sliding contactor engaging said bottom spring seat for connecting an AC source of electrical energization thereto.

Claim 9

A compressor as defined in claim 6 having means for withdrawing compressed fluid from said high-pressure chamber means.

Claim 10

A compressor as defined in claim 6 having a sealed container around said compressor, means for supplying gaseous fluid into said container, and means for withdrawing compressed fluid from said high-pressure chamber and out of said container.

Claim 11

A compressor as defined in claim 8 having an opposed compressed spring means resiliently supporting said compressor in said container.

Claim 12

A compressor as defined in claim 6 wherein said end plate has a cavity on one side and said headplate has a cavity facing said end plate cavity and forming therewith said high-pressure chamber means.

Claim 13

A compressor as defined in claim 10 wherein said end plate has a spring seat in said cavity and said pressure-responsive valve means includes a spring seated on said end plate spring seat and arranged in engagement with said valve means biasing it to closed position on said cylinder end valve seat.