US3846682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed pump and drive circuits therefor
Assignee: Individual
•
Filing: 1972-11-20
•
Granted: 1974-11-05
•
Expires: 1992-11-20
Abstract
Abstract A completely sealed magnetically driven pump having a piston armature driven by electrical windings. Unique electrical driving circuits are provided for the pump embodying feedback windings magnetically coupled with the driving windings of the pump for controlling the reciprocation. The drive circuits are such as to facilitate driving rates.
Inventors
- 👤 P Massie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:51
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/12; H02K33/14; F; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
98 words
A reciprocating electrical machine comprising: a magnetically actuatable reciprocatable armature and means supporting it for movement; permanent magnet means associated with the armature and supporting means; electrical winding means disposed to produce an electromagnetic field for reciprocating the armature in association with the field of the permanent magnet; and switch means for energizing the windings in a manner to cause the armature to reciprocate, said switch means comprising magnetic reed switch means positioned in proximity to the electromagnetic field generated by the windings so as to be actuable thereby in a manner to cause the armature to reciprocate.
Claim 2
Dependent Claim
98 words
A reciprocating electrical machine comprising: a magnetically actuatable reciprocatable armature and means supporting it for movement; permanent magnet means associated with the armature and supporting means; electrical winding means disposed to produce an electromagnetic field for reciprocating the armature in association with the field of the permanent magnet; and switch means for energizing the windings in a manner to cause the armature to reciprocate, said switch means comprising magnetic reed switch means positioned in proximity to the electromagnetic field generated by the windings so as to be actuable thereby in a manner to cause the armature to reciprocate.
Claim 3
Dependent Claim
50 words
A machine as in claim 1, in the form of a sealed pump wherein said supporting means comprises a cylinder, the armature being a piston movable in the cylinder, the ends of the cylinder being closed and the piston being free from mechanical connections to the exterior of the cylinder.
Claim 4
Dependent Claim
93 words
A reciprocating electrical machine comprising: a magnetically actuatable reciprocatable armature and means supporting it for movement; permanent magnet means associated with the armature and supporting means; electrical winding means disposed to produce a magnetic field for reciprocating the armature in association with the field of the permanent magnet; and drive circuit means for energizing said windings in a manner to cause said armature to reciprocate, said drive means comprising a multi-vibrator driving circuit for the windings, said windings comprising at least a pair of windings connected as load windings in said multi-vibrator circuit.
Claim 5
Dependent Claim
93 words
A reciprocating electrical machine comprising: a magnetically actuatable reciprocatable armature and means supporting it for movement; permanent magnet means associated with the armature and supporting means; electrical winding means disposed to produce a magnetic field for reciprocating the armature in association with the field of the permanent magnet; and drive circuit means for energizing said windings in a manner to cause said armature to reciprocate, said drive means comprising a multi-vibrator driving circuit for the windings, said windings comprising at least a pair of windings connected as load windings in said multi-vibrator circuit.
Claim 6
Dependent Claim
45 words
A machine as in claim 3, wherein said winding means include an additional pair of windings in coupling relationship with said first windings, said additional windings being connected to form feedback circuits in said multi-vibrator circuit whereby to increase the cycling rate of the circuit.
Claim 7
Dependent Claim
39 words
A machine as in claim 4, wherein said circuit comprises resistance/capacitance networks, said feedack windings being connected to control the charging rate of said capacitors in said network to thereby control the switching rate of switching in the circuit.
Claim 8
Dependent Claim
53 words
A machine as in claim 3, wherein said driving circuit comprises a pair of saturable reactors for supplying power to said winding means, and an additional pair of windings having coupling relationship with said first windings associated with said saturable reactors as feedback windings to control feeding of power to said first winding.
Claim 9
Dependent Claim
58 words
A machine as in claim 3, in the form of a sealed pump wherein said support means comprises a cylinder, said armature being in the form of a magnetically actuated piston within the cylinder, the ends of the cylinder being closed and the end of the piston being free from mechanical connections to the exterior of the cylinder.
Claim 10
Dependent Claim
21 words
A machine as in claim 6, wherein said saturable reactors have associated extrinsic feedback windings whereby to produce the snap-acting characteristic.
Claim 11
Dependent Claim
15 words
A machine as in claim 6, wherein said saturable reactors are of the bridge type.
Claim 12
Dependent Claim
25 words
A machine as in claim 6, wherein said saturable reactors are magnetically coupled to each other whereby to alternately supply power to said first windings.
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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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |