US3784334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically driven fluid compressing apparatus
Assignee: Johnson Service Co
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Filing: 1972-04-03
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Granted: 1974-01-08
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Expires: 1992-04-03
Abstract
Abstract A pneumatic supply includes a permanent magnet mounted to the upper end of a driven lever. An encircling rectangular member has an opening through which the lever extends to locate the permanent magnet generally centrally of the encircling magnetic frame. Coils are wound and oriented on the second frame to establish a pair of alternating current fields within the frame with corresponding polarity with respect to the permanent magnet to create oppositely directed driving forces on the permanent magnet in synchronism with the alternate polarities, thereby causing the permanent magnet to oscillate. Pole shoes are provided on opposite sides of the permanent magnet to concentrate and direct the flux. A pair of diaphragm type air compressors, each of which includes an operating piston aligned with and located to the opposite sides of the lever. The piston members are connected to each other and to the lever for simultaneous opposite corresponding directional movement. The reciprocating motion of the electromagnetic drive unit results in the opposite actuation of the compressors; the outputs of which are interconnected to a common pressure load.
Inventors
- 👤 A Hilgert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:19
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/12; F; F04; F04B; F04B35/00; F04B35/04; F04B35/045; F04B45/00; F04B45/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
223 words
An electromagnetically driven fluid compressing apparatus comprising, an electromagnetic drive means having a reciprocating drive element including a first magnetic unit having a first pole means and a second pole means, a second magnetic unit including an encircling magnetic frame disposed adjacent one end of said first pole means and said second pole means of the first magnetic unit and having a fourth and a fifth pole means at the opposite ends of the frame aligned with the second end of the said first and second pole means of the first magnetic unit, a first magnetic source establishing a unidirectional magnetic flux and connected to one of said first and second magnetic units to establish a unidirectional magnEtic field, a second magnetic source establishing and connected to the other of said first and second magnetic units to establish an alternating magnetic field, said unidirectional magnetic field and said alternating magnetic field having a common plane with the fields in superimposed relationship and with the reciprocating drive element mounted to move in said plane, said alternating magnetic field creating opposite polarity fields interacting with said unidirectional field to produce corresponding opposite movement of said drive element, a compressor means having a working chamber means and a movable input means mounted for reciprocating movement in said working chamber means and coupled to said drive element.
Claim 2
Dependent Claim
223 words
An electromagnetically driven fluid compressing apparatus comprising, an electromagnetic drive means having a reciprocating drive element including a first magnetic unit having a first pole means and a second pole means, a second magnetic unit including an encircling magnetic frame disposed adjacent one end of said first pole means and said second pole means of the first magnetic unit and having a fourth and a fifth pole means at the opposite ends of the frame aligned with the second end of the said first and second pole means of the first magnetic unit, a first magnetic source establishing a unidirectional magnetic flux and connected to one of said first and second magnetic units to establish a unidirectional magnEtic field, a second magnetic source establishing and connected to the other of said first and second magnetic units to establish an alternating magnetic field, said unidirectional magnetic field and said alternating magnetic field having a common plane with the fields in superimposed relationship and with the reciprocating drive element mounted to move in said plane, said alternating magnetic field creating opposite polarity fields interacting with said unidirectional field to produce corresponding opposite movement of said drive element, a compressor means having a working chamber means and a movable input means mounted for reciprocating movement in said working chamber means and coupled to said drive element.
Claim 3
Dependent Claim
39 words
The electromagnetically driven fluid compressing apparatus of claim 1 wherein said first magnetic unit includes a permanent magnet defining said first magnetic source and said pole means includes pole pieces secured to the opposite pole faces of said magnet.
Claim 4
Dependent Claim
85 words
The compressing apparatus of claim 1 wherein said drive element includes a leaf spring support unit connected to one end of said first magnetic unit, and said compressor means includes a pair of compressors each having a working chamber and having said input means in the form of members coupled for opposite working movement to said reciprocating drive element whereby one compressor is working during one movement of the drive element and the second compressor is working during the opposite movement of the drive element.
Claim 5
Dependent Claim
58 words
The electromagnetically driven fluid compressing apparatus of claim 1 wherein said magnetic frame includes an opening in one side defining a pair of pole ends with a space therebetween through which said driven element extends, said pole ends defining said pair of second pole means and being generally aligned with the pole means of said first magnetic unit.
Claim 6
Dependent Claim
32 words
The electromagnetically driven fluid compressing apparatus of claim 4 wherein said frame opposite from said pole ends includes an inward pole projection aligned with the opposite end of the first magnetic unit.
Claim 7
Dependent Claim
34 words
The electromagnetically driven fluid compressing apparatus of claim 5 having coil means wound on said frame to the opposite sides of said pole ends and said pole projection to establish said alternating magnetic field.
Claim 8
Dependent Claim
65 words
The electromagnetically driven fluid compressing apparatus of claim 1 wherein said first magnetic unit includes a rectangular permanent magnet defining said first magnetic source and said pole means includes pole pieces secured to the opposite long edges of said magnet, and said driven element includes a leaf spring support unit connected to one end of said magnetic unit and operatively connected to said input element.
Claim 9
Dependent Claim
162 words
The electromagnetically driven fluid compressing apparatus of claim 7 wherein said second magnetic unit includes a generally rectangular open frame with an opening in one side defining said pair of second pole means with a space therebetween through which said driven element extends, said frame encircling said permanent magnet with said pole ends adjacent the end of the magnet and the pole pieces of the magnet, an opposite frame portion of the frame opposite said pair of second pole means defining said first pole means of said second magnetic unit and being adjacent and aligned with the opposite end of the permanent magnet, one being substantially of the width of said permanent magnet, and coil means wound on said frame to the opposite sides of said pair of pole means and said opposite frame portion to establish a pair of alternating fields in said frame with said coil means oriented to establish corresponding fields on the opposite end of said permanent magnet.
Claim 10
Dependent Claim
131 words
The electromagnetically driven fluid compressing apparatus of claim 1 wherein said air compressor means includes a first and a second correspondingly constructed air compressor, each of said air compressors including a diaphragm unit defining one wall of said working chamber and coupled to a piston, Said piston including an inlet valve means to introduce air into the compression chamber in response to a suction stroke of the piston, an outlet valve means actuated in response to the compression stroke of the piston to transfer compressed air from said chamber, mounting means supporting said first and second air compressors to the opposite sides of said driven element with said pistons in the path of said driven element, and said input means interconnecting said pistons to each other and to said drive elements.
Claim 11
Dependent Claim
196 words
The electromagnetically driven fluid compressing apparatus of claim 1 wherein said first magnetic unit includes a rectangular permanent magnet defining said first magnetic source and said pole means includes pole pieces secured to the opposite long edges of said magnet, said driven element includes plate-like arm with a leaf spring secured to one end and the opposite end of the arm connected to one end of said magnetic unit, said second magnetic unit includes a generally rectangular open frame with an opening in one side defining a pair of pole ends with a space therebetween through which said driven element extends, said frame encircling said permanent magnet with said pole ends aligned with the pole pieces of the magnet, the frame opposite said pole ends including an inward projection aligned with the opposite end of the permanent magnet, coil means wound on said frame to the opposite sides of said pole ends and said opposite frame portion to establish said alternating field in said frame, and said compressor means includes a pair of compressors having corresponding rectilinearly movable input elements disposed one each to the opposite sides of said arm for opposite actuation of said compressors.
Claim 12
Dependent Claim
79 words
The electromagnetically driven fluid compressing apparatus of claim 1 wherein said compressor means is constructed to establish a preselected output pressure range, said first magnetic unit is a permanent magnet and said second magnetic unit is an electromagnet, a resilient means connected to said permanent magnet and said drive element, said electromagnet being selected to operate with a given power frequency corresponding to the natural frequency of the resilient means at essentially the center of said output pressure range.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |