US4329991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tampon
Assignee: Kao Corp
•
Filing: 1980-09-04
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Granted: 1982-05-18
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Expires: 2000-09-04
Abstract
Abstract A tampon is disclosed comprising an outer cylinder, a push-out portion which is slidingly fitted into the outer cylinder from the rear end thereof and is adapted to be pushed towards the forward end of the outer cylinder, and an absorbing member contained in said outer cylinder, wherein at least one hole is formed on the outer cylinder at a position behind the absorbing member. The push-out portion is formed by a cylinder having at least one push-out piece having a width slightly smaller than the length of the hole on the outer cylinder in the circumferential direction, the number of the push-out pieces being the same as the number of the holes in the outer cylinder. Before application of the tampon, the push-out piece is kept in contact with the outer face of the outer cylinder by being inserted through the hole in the outer cylinder. When the tampon is actually used, the push-out piece is withdrawn into the outer cylinder and then pushed forward to push out the absorbing member contained therein through an opening at the forward end of the outer cylinder.
Inventors
- 👤 Akira Sakurai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:28
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/20; A61F13/26; A61F13/263
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
3 words
A tampon, comprising:
Claim 2
Dependent Claim
3 words
A tampon, comprising:
Claim 3
Dependent Claim
259 words
an elongated outer member having a rear portion and a front cylindrical portion which is adapted to be inserted into a vagina, said rear portion being laterally enlarged relative to said front cylindrical portion, and a wall extending laterally outwardly from the rear end of said front cylindrical portion to the front end of said rear portion, said wall having one or more holes therethrough; a mass of absorbent material disposed inside said front cylindrical portion close to the front end thereof and adapted to be moved through said front end of said front cylindrical portion into a vagina; a push-out member mounted on said elongated outer member for sliding movement in a direction lengthwise thereof, said push-out member having a rear portion slidably disposed inside said rear portion of said elongated outer member, said push-out member having one or more longitudinally extending push-out pieces corresponding in number to the number of said holes, said push-out piece extending from said rear portion of said push-out member through its associted hole in said elongated outer member and thence forwardly along the outer surface of said front cylindrical portion of said elongated outer member, said push-out piece being receivable inside said elongated outer member when said push-out member is moved longitudinally rearwardly relative to said elongated outer member such that subsequent longitudinal movement of said push-out member in a direction toward the front end of said front cylindrical portion causes said push-out piece to move said mass of absorbent material out of said front cylindrical portion through the front end thereof.
Claim 4
Dependent Claim
259 words
an elongated outer member having a rear portion and a front cylindrical portion which is adapted to be inserted into a vagina, said rear portion being laterally enlarged relative to said front cylindrical portion, and a wall extending laterally outwardly from the rear end of said front cylindrical portion to the front end of said rear portion, said wall having one or more holes therethrough; a mass of absorbent material disposed inside said front cylindrical portion close to the front end thereof and adapted to be moved through said front end of said front cylindrical portion into a vagina; a push-out member mounted on said elongated outer member for sliding movement in a direction lengthwise thereof, said push-out member having a rear portion slidably disposed inside said rear portion of said elongated outer member, said push-out member having one or more longitudinally extending push-out pieces corresponding in number to the number of said holes, said push-out piece extending from said rear portion of said push-out member through its associted hole in said elongated outer member and thence forwardly along the outer surface of said front cylindrical portion of said elongated outer member, said push-out piece being receivable inside said elongated outer member when said push-out member is moved longitudinally rearwardly relative to said elongated outer member such that subsequent longitudinal movement of said push-out member in a direction toward the front end of said front cylindrical portion causes said push-out piece to move said mass of absorbent material out of said front cylindrical portion through the front end thereof.
Claim 5
Dependent Claim
78 words
A tampon as claimed in claim 1 wherein said front end of said front cylindrical portion has a partially spherical, convex surface, said partially spherical, convex surface having a plurality of radial slits radiating from a central opening so that said partially spherical, convex surface is defined by a plurality of flexible pieces, and the front end of said push-out piece is inwardly curved so that it engages said partially spherical, convex surface of said front cylindrical portion.
Claim 6
Dependent Claim
26 words
A tampon as claimed in claim 1 or claim 2 wherein said wall is located rearwardly of the rear end of said mass of absorbent material.
Claim 7
Dependent Claim
29 words
A tampon as claimed in claim 1 or claim 2 wherein said wall has two holes therethrough and said push-out member has two push-out pieces corresponding to said holes.
Claim 8
Dependent Claim
36 words
A tampon as claimed in claim 1 wherein said hole is elongated in the circumferential direction of said front cylindrical portion, the length of said hole being slightly greater than the width of said push-out piece.
Claim 9
Dependent Claim
73 words
A tampon as claimed in claim 1 or claim 2 wherein said rear portion of said push-out member is a cylinder and said rear portion of said elongated outer member is a cylinder which has a larger internal diameter than the external diameter of said rear portion of said push-out member so that said rear portion of said push-out member is closely slidably sleeved within said rear portion of said elongated outer member.
References Cited (Backward Citations)
US2829646A
Cited
US4273125A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-17 | 1985-11-16 | 1986-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-17 | 1989-11-16 | 1990-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-17 | 1993-11-16 | 1994-05-18 | $7700.00 | Window Closed / Lapsed |