US5052071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toothbrush with displaceable head
Assignee: Lingner and Fischer GmbH
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Filing: 1989-03-29
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Granted: 1991-10-01
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Expires: 2009-03-29
Abstract
Abstract A toothbrush has a handle of plastics material and, at one end thereof, a head, the handle including, as integral parts thereof, a grip portion, a resiliently flexible portion and a head-carrying portion, the resiliently flexible portion comprising at least one transverse V-shaped fold formed integrallly with the remainder of the handle and in a plane at from 30° to 150°, preferably substantially at right-angles, to that in which the handle lies, whereby the resiliently flexible portion permits the head-carrying portion, on the application of pressure to the head, to be moved at an angle to the grip portion and out of the plane in which it normally lies, and to revert to its original position on the release of pressure.
Inventors
- 👤 Hans Halm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:13
CPC Classifications
A; A46; A46B; A46B5/00; A46B5/002; A46B5/0054; A46B5/0062; A46B5/0066; A46B7/00; A46B7/02; A46B2200/00; A46B2200/10; A46B2200/1066
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
169 words
A toothbrush comprising: (a) an elongated handle constituted of synthetic plastic material and extending along a central longitudinal axis between a grip handle portion and a head-carrying handle portion, said grip handle portion having a central longitudinal plane in which the grip handle portion lies in a non-flexed position; (b) a head supported by the head-carrying handle portion and having a plurality of bristles on, and projecting from, the head; and (c) resilient flexible means integral with the handle between the grip handle portion and the head-carrying handle portion for permitting angular joint displacement of the head-carrying handle portion and the head relative to the grip handle portion out of the non-flexed position and in a displacement plane normal to the central longitudinal plane, said resilient flexible means including at least one pair of arm interconnected at a fold that extends along a fold axis parallel to the central longitudinal plane and perpendicular to the displacement plane, said bristles on the head projecting substantially parallel to the displacement plane.
Claim 2
Dependent Claim
169 words
A toothbrush comprising: (a) an elongated handle constituted of synthetic plastic material and extending along a central longitudinal axis between a grip handle portion and a head-carrying handle portion, said grip handle portion having a central longitudinal plane in which the grip handle portion lies in a non-flexed position; (b) a head supported by the head-carrying handle portion and having a plurality of bristles on, and projecting from, the head; and (c) resilient flexible means integral with the handle between the grip handle portion and the head-carrying handle portion for permitting angular joint displacement of the head-carrying handle portion and the head relative to the grip handle portion out of the non-flexed position and in a displacement plane normal to the central longitudinal plane, said resilient flexible means including at least one pair of arm interconnected at a fold that extends along a fold axis parallel to the central longitudinal plane and perpendicular to the displacement plane, said bristles on the head projecting substantially parallel to the displacement plane.
Claim 3
Dependent Claim
25 words
The toothbrush according to claim 1, and further comprising a structural rib extending along the longitudinal axis between said at least one pair of arms.
Claim 4
Dependent Claim
62 words
The toothbrush according to claim 2, wherein the head is constituted of synthetic plastic material and is integral with the head-carrying handle portion, and wherein said at least one pair of arms is also constituted of synthetic plastic material and is integral with the handle, and wherein said structural rib is constituted of synthetic plastic material and is integral with the handle.
Claim 5
Dependent Claim
29 words
The toothbrush according to claim 1, wherein said at least one pair of arms and said fold together have a generally V-shaped configuration as considered in said displacement plane.
Claim 6
Dependent Claim
44 words
The toothbrush according to claim 1, wherein said arms of said at least one pair are substantially mutually parallel, and wherein said arms of said at least one pair and said fold together have a generally U-shaped configuration as considered in said displacement plane.
Claim 7
Dependent Claim
43 words
The toothbrush according to claim 1, wherein said arms of said at least one pair extend in a plane that is at an angle in a range from about 30° to about 150° with the plane in which the grip handle portion lies.
Claim 8
Dependent Claim
39 words
The toothbrush according to claim 1, wherein the resilient flexible means includes a plurality of pairs of arms, each interconnected at respective folds that respectively extend along respective folding axes, all of said folding axes extending in mutual parallelism.
Claim 9
Dependent Claim
20 words
The toothbrush according to claim 7, wherein the folds are arranged in an alternately inverted pattern along the longitudinal axis.
Claim 10
Dependent Claim
14 words
The toothbrush according to claim 7, wherein there are between two and eight folds.
Claim 11
Dependent Claim
11 words
The toothbrush according to claim 9, wherein there are five folds.
Claim 12
Dependent Claim
25 words
The toothbrush according to claim 7, and further comprising a plurality of structural ribs, each extending along the longitudinal axis between each pair of arms.
Claim 13
Dependent Claim
35 words
The toothbrush according to claim 1, wherein the handle has a transverse width dimension that is perpendicular to the central longitudinal axis, and wherein the arms of said one pair extend across said width dimension.
Claim 14
Dependent Claim
24 words
The toothbrush according to claim 1, and further comprising grip enhancement means on the grip portion for enhancing a user's grip on the handle.
Claim 15
Dependent Claim
25 words
The toothbrush according to claim 13, wherein the grip enhancement means includes at least one mat on the grip portion, said mat having raised sections.
Claim 16
Dependent Claim
26 words
The toothbrush according to claim 13, wherein the grip enhancement means includes two mats on the grip portion at opposite sides of the central longitudinal plane.
Claim 17
Dependent Claim
25 words
The toothbrush according to claim 13, wherein the grip enhancement means includes at least one mat on the grip portion, said mat having recessed sections.
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Cited
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Cited
FR1005685A
Cited
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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) | 1994-09-30 | 1995-04-01 | 1995-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-30 | 1999-04-01 | 1999-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-30 | 2003-04-01 | 2003-10-01 | $7700.00 | Window Closed / Lapsed |