US3635592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically operated double-diaphragm pump
Assignee: Individual
•
Filing: 1970-05-06
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Granted: 1972-01-18
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Expires: 1990-05-06
Abstract
Abstract An electrically operated double-diaphragm pump of the kind in which two diaphragms are actuated by a common oscillating arm situated between them, the arm being oscillated by an alternating current vibrating armature motor, has each diaphragm connected to the oscillating arm directly through a resilient coupling member made of rubber or rubberlike plastics material. The coupling member consists of a tube with a solid part in its middle to which the arm is fixed and the diaphragms are fixed, one to each end of the tube, by means of pins, one of which is fixed to each diaphragm and which fit one in each end of the tube. The pins may have heads which fit in internal sockets within the tube to hold the pins in the tube as the arm oscillates.
Inventors
- 👤 Erwin Kolfertz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:47
CPC Classifications
F; F04; F04B; F04B45/00; F04B45/04; F04B45/043; F04B45/047
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
In an Electrically operated double-diaphragm pump arrangement comprising in combination, an actuating arm having an opening oscillatably mounted between a pair of opposed and coaxial pump diaphragms; an alternating current vibrator armature motor operatively connected to said actuating arm for oscillating it substantially along the axis of said coaxial pump diaphragms, a tubular unitary coupling member of rubber or rubberlike plastics material having a solid central portion and being operatively connected at opposite ends to said pair of opposed pump diaphragms, so that oscillation of the arm reciprocates said pair of diaphragms via said coupling member to operate said pump, said coupling member extending through said opening of said arm and forms a positive connection therewith.
Claim 2
Dependent Claim
116 words
In an Electrically operated double-diaphragm pump arrangement comprising in combination, an actuating arm having an opening oscillatably mounted between a pair of opposed and coaxial pump diaphragms; an alternating current vibrator armature motor operatively connected to said actuating arm for oscillating it substantially along the axis of said coaxial pump diaphragms, a tubular unitary coupling member of rubber or rubberlike plastics material having a solid central portion and being operatively connected at opposite ends to said pair of opposed pump diaphragms, so that oscillation of the arm reciprocates said pair of diaphragms via said coupling member to operate said pump, said coupling member extending through said opening of said arm and forms a positive connection therewith.
Claim 3
Dependent Claim
44 words
A pump as claimed in claim 1, further comprising means defining an opening in said arm, and means defining an annular groove extending around said solid part in the middle of said tube, said coupling member extending through said opening fitting in said groove.
Claim 4
Dependent Claim
27 words
A pump as claimed in claim 1, further comprising pins fixed one to each of said diaphragms, said pins fitting one in each end of said tube.
Claim 5
Dependent Claim
40 words
A pump as claimed in claim 3, further comprising means defining sockets within said tube, one adjacent each end thereof, and heads on said pins, said heads fitting in said sockets to resist withdrawal of said pins from said tube.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |