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Patent US3696187A successfully refreshed from Google Patents.
US3696187A
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US
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Method of forming catamenial napkins
Assignee: Individual
•
Filing: 1970-11-23
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Granted: 1972-10-03
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Expires: 1990-11-23
Abstract
Abstract A method of forming a catamenial napkin into a longitudinal arch-shape with spaced parallel longitudinal channels on its concave surface defining between them a compacted tampon-like central ridge. The method also includes the step of forming a central longitudinal channel on the convex surface to facilitate folding when in place on a wearer and the formation of a lateral crease inwardly of each end adapting the napkin to compact package and storing.
Inventors
- 👤 Jacob A Glassman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:57
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/15577; A61F13/15707
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
149 words
The method of forming a catamenial napkin fabricated from an elongated mass of soft fibrous material, said method including the steps of; causing the mass to be moistened, providing shaping dies the effective surfaces of which are arcuate in shape in a longitudinal direction and at least one of which has shaping ribs thereon, positioning said moistened mass between said dies, heating at least one of said dies, applying pressure to said dies to compress selected areas of the mass to form at least one longitudinal channel in one face of the mass, providing wing dies on the ends of one of the shaping dies and providing at least one rib on each end of the other of said shaping dies, and causing the wing dies to compress the end regions of the mass into engagement with the related ribs so as to generate lateral creases in said mass.
Claim 2
Independent Claim
149 words
The method of forming a catamenial napkin fabricated from an elongated mass of soft fibrous material, said method including the steps of; causing the mass to be moistened, providing shaping dies the effective surfaces of which are arcuate in shape in a longitudinal direction and at least one of which has shaping ribs thereon, positioning said moistened mass between said dies, heating at least one of said dies, applying pressure to said dies to compress selected areas of the mass to form at least one longitudinal channel in one face of the mass, providing wing dies on the ends of one of the shaping dies and providing at least one rib on each end of the other of said shaping dies, and causing the wing dies to compress the end regions of the mass into engagement with the related ribs so as to generate lateral creases in said mass.
Claim 3
Dependent Claim
26 words
The method recited in claim 1, with the addition of providing shaping ribs on the shaping dies to form channels in both faces of the mass.
Claim 4
Dependent Claim
33 words
The method recited in claim 1, wherein there are two ribs on each end of the other of said shaping ides to form two lateral creases in each end portion of the mass.
References Cited (Backward Citations)
US2157794A
Cited
US2856323A
Cited
US3017304A
Cited
US3058160A
Cited
US2952260A
Cited
US3351693A
Cited
US3384695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |