Patent US4480940A successfully refreshed from Google Patents.
US4480940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible diaphragm for dispensing product
Assignee: Procter and Gamble Co
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Filing: 1983-12-06
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Granted: 1984-11-06
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Expires: 2003-12-06
Abstract
Abstract Device for applying liquid materials to the skin, the device having a liquid container, a poromeric plastic applicator head, and a diaphragm spring holding the applicator in said device. The diaphragm spring provides a liquid tight seal between the poromeric applicator head and the liquid container and also allows movement of the poromeric applicator head in a vertical direction to create a pressure within the liquid container and provide force to aid in moving the liquid through the poromeric applicator head to its outer surface.
Inventors
- 👤 Keith F. Woodruff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:17
CPC Classifications
A; A45; A45D; A45D34/00; A45D34/04; A45D2200/00; A45D2200/10; A45D2200/1009; A45D2200/1018
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
117 words
A liquid applicator suitable for use in the application of liquids to a surface of the human body comprising a container having a container body adapted for storing a quantity of liquid, said container having an opening at the upper end thereof; annular spring means said annular spring means comprising outer and inner concentric cylindrical segments joined by an undulate annular planar member, said spring means being positioned in said container, applicator means being secured in said spring means; said annular spring means forming a liquid tight seal between said applicator means and said container body; said applicator means comprising a non-flexible, non-deformable, sintered, porous synthetic resin structure having a controlled porosity and having omni-directional interconnecting pores.
Claim 2
Dependent Claim
117 words
A liquid applicator suitable for use in the application of liquids to a surface of the human body comprising a container having a container body adapted for storing a quantity of liquid, said container having an opening at the upper end thereof; annular spring means said annular spring means comprising outer and inner concentric cylindrical segments joined by an undulate annular planar member, said spring means being positioned in said container, applicator means being secured in said spring means; said annular spring means forming a liquid tight seal between said applicator means and said container body; said applicator means comprising a non-flexible, non-deformable, sintered, porous synthetic resin structure having a controlled porosity and having omni-directional interconnecting pores.
Claim 3
Dependent Claim
22 words
The liquid applicator of claim 1 wherein said outer cylindrical segment of said spring means fits in the opening of said container.
Claim 4
Dependent Claim
19 words
The liquid applicator of claim 1 wherein said applicator means fits in the inner of said concentric cylindrical segments.
Claim 5
Dependent Claim
30 words
The liquid applicator of claim 1 wherein the upper edge of said inner cylindrical segment is lower in an axial direction than the upper edge of said outer cylindrical segment.
Claim 6
Dependent Claim
16 words
The liquid applicator of claim 1 wherein said undulate planar member has a downward annular undulation.
Claim 7
Dependent Claim
19 words
The liquid applicator of claim 1 wherein said container contains an absorbent reservoir means for a quantity of liquid.
Claim 8
Dependent Claim
17 words
The liquid applicator of claim 6 wherein said reservoir means comprises a natural or synthetic fibrous material.
Claim 9
Dependent Claim
16 words
The liquid applicator of claim 1 comprising in addition a cap fitted over said applicator means.
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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) | 1987-11-06 | 1988-05-07 | 1988-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-06 | 1992-05-07 | 1992-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-06 | 1996-05-07 | 1996-11-06 | $7700.00 | Window Closed / Lapsed |