Patent US4577649A successfully refreshed from Google Patents.
US4577649A
Expired / Lapsed
US
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Toothpick
Assignee: Individual
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Filing: 1980-05-01
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Granted: 1986-03-25
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Expires: 2000-05-01
Abstract
Abstract A toothpick has two side faces which are inclined relative to one another so as to form an acute angle therebetween and a sharp upper edge, and a third face which connects the side faces with one another and forms two sharp lower edges. The toothpick may be elastic in transverse direction. It may be solid, hollow or composed of two connected strips.
Inventors
- 👤 Marat Shimenkov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:49
CPC Classifications
A; A61; A61C; A61C15/00; A61C15/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
131 words
A toothpick, comprising an elongated trihedral hollow body having two side walls forming two straight faces extending in direction of elongation and inclined relative to one another so as to form an acute angle therebetween, said body also having a third wall which connects said first-mentioned side walls with one another and defines a third face which is concave so as to form two lower edges which are substantially sharp, said body being elastic in direction transverse to the direction of elongation so as to be compressed during insertion of the toothpick between teeth whereby said straight side faces act upon the teeth, and said third wall being upwardly convex so as to elastically urge said side walls in the transverse direction away from one another and thereby against the teeth.
Claim 2
Dependent Claim
131 words
A toothpick, comprising an elongated trihedral hollow body having two side walls forming two straight faces extending in direction of elongation and inclined relative to one another so as to form an acute angle therebetween, said body also having a third wall which connects said first-mentioned side walls with one another and defines a third face which is concave so as to form two lower edges which are substantially sharp, said body being elastic in direction transverse to the direction of elongation so as to be compressed during insertion of the toothpick between teeth whereby said straight side faces act upon the teeth, and said third wall being upwardly convex so as to elastically urge said side walls in the transverse direction away from one another and thereby against the teeth.
Claim 3
Dependent Claim
29 words
A toothpick as defined in claim 1, wherein said strips are elastically displaceable in a direction which is transverse to the direction of elongation and to said side faces.
Claim 4
Dependent Claim
131 words
A toothpick, comprising an elongated body having two side faces extending in direction of elongation and inclined relative to one another so as to form an acute angle therebetween, said body also having a third face which connects said first-mentioned side faces with one another, said third face being concave so as to form two lower edges which are substantially sharp, said body being formed by two strips each forming a respective one of said side faces and a respective one of said lower edges, each of said strips having a first end section forming the respective lower edge and a second end section connected with the second end section of the other strip, said body formed by said two strips being elastic in direction transverse to the direction of elongation.
Claim 5
Dependent Claim
131 words
A toothpick, comprising an elongated body having two side faces extending in direction of elongation and inclined relative to one another so as to form an acute angle therebetween, said body also having a third face which connects said first-mentioned side faces with one another, said third face being concave so as to form two lower edges which are substantially sharp, said body being formed by two strips each forming a respective one of said side faces and a respective one of said lower edges, each of said strips having a first end section forming the respective lower edge and a second end section connected with the second end section of the other strip, said body formed by said two strips being elastic in direction transverse to the direction of elongation.
Claim 6
Dependent Claim
45 words
A toothpick as defined in claim 1, wherein said trihedral body has an upper end, and a lower end wherein said end face and said lower edges are formed, said side faces together forming an upper edge at said upper end, which is substantially sharp.
Claim 7
Dependent Claim
16 words
A toothpick as defined in claim 1, wherein said side faces of said body are textured.
Claim 8
Dependent Claim
26 words
A toothpick as defined in claim 1, and further comprising a handle which is connected with said body and also extends in the direction of elongation.
Claim 9
Dependent Claim
18 words
A toothpick as defined in claim 1, wherein said side faces of said body are provided with nap.
Claim 10
Dependent Claim
13 words
A toothpick as defined in claim 1, wherein said body portion is crescent-shaped.
Claim 11
Dependent Claim
19 words
A toothpick as defined in claim 8, and further comprising a substantially straight handle connected with said crescent-shaped body.
Claim 12
Dependent Claim
30 words
A toothpick as defined in claim 1, wherein each of said strips has a thickness decreasing from the second end portion to the first end portion of the same strip.
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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) | 1989-03-24 | 1989-09-23 | 1990-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-24 | 1993-09-23 | 1994-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-24 | 1997-09-23 | 1998-03-25 | $7700.00 | Window Closed / Lapsed |