US4154559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic reciprocating pump
Assignee: Enomoto Micro Pump Mfg Co Ltd
•
Filing: 1977-10-28
•
Granted: 1979-05-15
•
Expires: 1997-10-28
Abstract
Abstract An electromagnetic reciprocating pump having two vibrators with permanent magnets and an electromagnet adapted to cooperate with the permanent magnets to vibrate the vibrators and characterized by connector means coupling the two vibrators to allow the vibrators to vibrate conjointly, keeping a given space therebetween. With such a structure, the pump capacity is much enhanced without increasing the sizes of the permanent magnets and the electromagnet.
Inventors
- 👤 Chouyu Enomoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:30
CPC Classifications
H; H02; H02K; H02K33/00; H02K33/02; H02K33/04; H02K33/06; F; F04; F04B; F04B45/00; F04B45/04; F04B45/043; F04B45/047
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
157 words
An electromagnetic reciprocating pump which comprises a housing having at least a top and a bottom plate and a sidewall structure; two L-shaped vibrators hangingly provided on a lower surface of the top plate of the housing, symmetrically inwardly or outwardly and each having respective upright portions and horizontal portions; two diaphragm pump members each mounted inwardly or outwardly on the respective L-shaped vibrators intermediates the ends of the upright portions; permanent magnets fixed to lower surfaces of the horizontal portions of the L-shaped vibratiors, respectively; an electromagnet mounted on an upper surface of the bottom plate of the housing and having cores facing to the permanent magnets, whereby the vibrators vibrate, upon application of an A.C. voltage to the electromagnet, to operate the diaphragm pump members; characterized in that the vibrators are coupled with each other, at lower portions of the upright portions thereof, by connector means to vibrate conjointly, keeping substantially an original space therebetween.
Claim 2
Dependent Claim
157 words
An electromagnetic reciprocating pump which comprises a housing having at least a top and a bottom plate and a sidewall structure; two L-shaped vibrators hangingly provided on a lower surface of the top plate of the housing, symmetrically inwardly or outwardly and each having respective upright portions and horizontal portions; two diaphragm pump members each mounted inwardly or outwardly on the respective L-shaped vibrators intermediates the ends of the upright portions; permanent magnets fixed to lower surfaces of the horizontal portions of the L-shaped vibratiors, respectively; an electromagnet mounted on an upper surface of the bottom plate of the housing and having cores facing to the permanent magnets, whereby the vibrators vibrate, upon application of an A.C. voltage to the electromagnet, to operate the diaphragm pump members; characterized in that the vibrators are coupled with each other, at lower portions of the upright portions thereof, by connector means to vibrate conjointly, keeping substantially an original space therebetween.
Claim 3
Dependent Claim
17 words
An electromagnetic reciprocating pump as set forth in claim 1 wherein said connector means is a link.
Claim 4
Dependent Claim
18 words
An electromagnetic reciprocating pump as set forth in claim 1 wherein said connector means is a resilient member.
Claim 5
Dependent Claim
21 words
An electromagnetic reciprocating pump as set forth in claim 3 wherein said resilient member is made of synthetic rubber having resiliency.
Claim 6
Dependent Claim
18 words
An electromagnetic reciprocating pump at set forth in claim 1 wherein said connector means is a coil spring.
Claim 7
Dependent Claim
53 words
An electromagnetic reciprocating pump as set forth in claim 1, wherein said connector means comprises resilient plates extending at right angle with the vibration direction of the vibrators and fixed to the vibrators at the lower portions of the upright portions thereof; and connectors fixed to the resilient plates at their end portions.
Claim 8
Dependent Claim
75 words
An electromagnetic reciprocating pump as set forth in claim 1 wherein said connector means comprises risilient rods each fixed to the respective vibrators, extending in the depth direction of the housing, then bent outwardly in the width direction and again bent upwardly or downwardly in the height direction and having front and rear ends; and connectors provided between the front ends of the resilient rods and between the rear ends of the resilient rods, respectively.
Claim 9
Dependent Claim
23 words
An electromagnetic reciprocating pump as set forth in claim 7, wherein said connectors are each adapted to be adjustable to vary their lengths.
References Cited (Backward Citations)
US3635592A
Cited
US3671151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-14 | 1982-11-13 | 1983-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-14 | 1986-11-13 | 1987-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-14 | 1990-11-13 | 1991-05-15 | $7700.00 | Window Closed / Lapsed |