Patent US3822703A successfully refreshed from Google Patents.
US3822703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breast pump
Assignee: Individual
•
Filing: 1973-02-13
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Granted: 1974-07-09
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Expires: 1993-02-13
Abstract
Abstract A breast pump is disclosed for use in stimulating lactation, particularly of the female human breast. The pump is equipped with a hollow chamber having a breast receiving opening adapted to engage at least the nipple area and means for pressurizing and depressurizing said chamber when in engagement with the breast. The chamber''s breast receiving opening is fitted with a diaphragm having an aperture large enough for only the nipple area to extend through, said diaphram being comprised of elastic material capable of vibrating back and forth in response to the pressurization and depressurization of the chamber when said diaphragm is in engagement with the breast.
Inventors
- 👤 P Davisson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:40
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/06; A61M1/062; A61M1/064; A61M1/066; A61M1/069; A61M1/0693; A61M1/06935; A61M1/0697; A61M1/80; A61M1/82; A61M2205/00; A61M2205/07; A61M2205/071; A61M2205/075
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
154 words
Apparatus for stimulating lactation which comprises, in combination: a. a hollow chamber having an opening adapted to engage at least the nipple area of the breast in an essentially airtight manner; b. means for alternately pressurizing and depressurizing said chamber when in engagement with the breast; and c. a diaphragm fitted to said chamber opening, said diaphragm being comprised of elastic material capable of vibrating back and forth in response to the pressurization and depressurization of said chamber when in engagement with the breast and said diaphragm having an aperture large enough to admit essentially only the nipple area of the breast, which aperture is encircled by an elevated crown of diaphragm material on the breast engaging side of said diaphragm, said crown flattening out as it is drawn into said chamber during chamber depressurization so as to decrease the size of said diaphragm aperture and thereby tighten said aperture''s hold upon the nipple.
Claim 2
Dependent Claim
154 words
Apparatus for stimulating lactation which comprises, in combination: a. a hollow chamber having an opening adapted to engage at least the nipple area of the breast in an essentially airtight manner; b. means for alternately pressurizing and depressurizing said chamber when in engagement with the breast; and c. a diaphragm fitted to said chamber opening, said diaphragm being comprised of elastic material capable of vibrating back and forth in response to the pressurization and depressurization of said chamber when in engagement with the breast and said diaphragm having an aperture large enough to admit essentially only the nipple area of the breast, which aperture is encircled by an elevated crown of diaphragm material on the breast engaging side of said diaphragm, said crown flattening out as it is drawn into said chamber during chamber depressurization so as to decrease the size of said diaphragm aperture and thereby tighten said aperture''s hold upon the nipple.
Claim 3
Dependent Claim
69 words
The apparatus of claim 1 wherein said hollow chamber is generally conically shaped with a breast engaging opening at the cone base and is provided with pumping means for pressurizing and depressurizing said chamber at the cone apex, and said diaphragm possesses a centrally disposed aperture encircled by a ring of diaphragm material extending into said chamber from the elevated crown on the breast engaging side of said diaphragm.
Claim 4
Dependent Claim
50 words
The apparatus of claim 2 wherein said hollow chamber is a generally trumpet shaped cone and said diaphragm fits within the base opening of said cone chamber, the elevated crown of said diaphragm being encircled by a recessed area of diaphragm material on the breast engaging side of said diaphragm.
Claim 5
Dependent Claim
13 words
The apparatus of claim 3 wherein an electrically driVen pumping means is employed.
Claim 6
Dependent Claim
47 words
The apparatus of claim 3 wherein said recessed area of diaphragm material on the breast engaging side of said diaphragm is encircled by an upwardly flaring lip of diaphragm material substantially conforming to the shape of and recessed within the breast engaging opening of said cone chamber.
Claim 7
Dependent Claim
48 words
The apparatus of claim 5 wherein a projection along one side of said cone chamber is provided to serve as a milk reservoir and the pumping means comprises a rubber bulb fitted over the cone chamber apex, which bulb can be operated by being manually squeezed and released.
Claim 8
Dependent Claim
37 words
The apparatus of claim 6 wherein said diaphragm includes a projecting rim located near and substantially encircling said diaphragm''s outer margin, said rim fitting into a corresponding groove within the breast engaging opening of said cone chamber.
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) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |