Patent US5398369A successfully refreshed from Google Patents.
US5398369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toothbrush with pliable pressure pad
Assignee: Church and Dwight Co Inc
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Filing: 1994-07-07
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Granted: 1995-03-21
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Expires: 2014-07-07
Abstract
Abstract A toothbrush is described whose handle has a special arrangement. The handle includes an elongated handle arm formed of a plastic having a Shore Hardness value of at least 90. A pressure pad is attached to the arm and formed of an elastomer having a Shore Hardness value no higher than 80. Advantageously, the elongated handle arm has a recess in an area adjacent to connection with the brushhead. The pressure pad is arranged within that recess. At least one radial anti-slip structure, especially a semi-ring shape, protrudes from and circumscribes bottom and lateral surfaces of the arm.
Inventors
- 👤 Bert D. Heinzelman
- 👤 Donald R. Lamond
- 👤 Robert Pandorf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:04
CPC Classifications
A; A46; A46B; A46B5/00; A46B5/02; A46B5/026; A46B2200/00; A46B2200/10; A46B2200/1066; B; B29; B29L; B29L2031/00; B29L2031/42; B29L2031/425; Y; Y10; Y10S; Y10S16/00; Y10S16/12; Y10S16/18
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
175 words
A toothbrush comprising: a brushhead comprising a base and bristle tufts projecting from said base, said brushhead having first and second ends; and a handle connected to said second end of said brushhead, said handle comprising: an elongated arm traversing a full length of said handle, said arm having a top, bottom and two lateral surfaces with the two lateral surfaces being disposed between and on opposite sides of said top and bottom surfaces, said arm being formed of a plastic having a Shore Hardness value of at least 90; a recess formed within said top surface of said arm in an area adjacent to connection with said brushhead; a pressure pad arranged within said recess of said arm as an elongate body along said top surface and formed of an elastomer having a Shore Hardness value no higher than 80; and at least one anti-roll structure protruding from and circumscribing said bottom and lateral surfaces of said arm, said at least one anti-roll structure being positioned to flank and extend below said pressure pad.
Claim 2
Dependent Claim
175 words
A toothbrush comprising: a brushhead comprising a base and bristle tufts projecting from said base, said brushhead having first and second ends; and a handle connected to said second end of said brushhead, said handle comprising: an elongated arm traversing a full length of said handle, said arm having a top, bottom and two lateral surfaces with the two lateral surfaces being disposed between and on opposite sides of said top and bottom surfaces, said arm being formed of a plastic having a Shore Hardness value of at least 90; a recess formed within said top surface of said arm in an area adjacent to connection with said brushhead; a pressure pad arranged within said recess of said arm as an elongate body along said top surface and formed of an elastomer having a Shore Hardness value no higher than 80; and at least one anti-roll structure protruding from and circumscribing said bottom and lateral surfaces of said arm, said at least one anti-roll structure being positioned to flank and extend below said pressure pad.
Claim 3
Dependent Claim
19 words
A toothbrush according to claim 1 wherein said plastic has a Shore Hardness value ranging from 95 to 100.
Claim 4
Dependent Claim
19 words
A toothbrush according to claim 1 wherein the elastomer has a Shore Hardness value ranging from 40 to 65.
Claim 5
Dependent Claim
27 words
A toothbrush according to claim 1 wherein the recess is saddle shaped and defined by an elongated concave mouth oriented along a longitudinal axis of said arm.
Claim 6
Dependent Claim
28 words
A toothbrush according to claim 4 wherein said recess has a length at a mouth thereof that ranges from 3 to 30% of a length of said handle.
Claim 7
Dependent Claim
17 words
A toothbrush according to claim 5 wherein said length of said recess ranges from 10 to 20%.
Claim 8
Dependent Claim
15 words
A toothbrush according to claim 1 wherein said arm is formed of a transparent plastic.
Claim 9
Dependent Claim
19 words
A toothbrush according to claim 1 wherein said elastomer is selected from the group consisting of rubber and polyurethane.
Claim 10
Dependent Claim
20 words
A toothbrush according to claim 8 wherein said rubber is selected from the group consisting of polyisobutylene, polypropylene and polybutadiene.
Claim 11
Dependent Claim
25 words
A toothbrush according to claim 1 wherein said plastic is selected from the group consisting of nylon, polyethylene, polycarbonate, polyethylene terephthalate, polyacrylate, polymethylmethacrylate and styrene/acrylonitrile.
Claim 12
Dependent Claim
21 words
A toothbrush according to claim 1 wherein said pressure pad and said at least one anti-roll structure are of unitary construction.
Claim 13
Dependent Claim
29 words
A toothbrush according to claim 1 wherein said at least one anti-roll structure has a plane of symmetry oriented perpendicular to a longitudinal axis of said elongated handle arm.
Claim 14
Dependent Claim
30 words
A toothbrush according to claim 1 wherein said at least one anti-roll structure is three in number, each equidistantly spaced from an adjacent anti-roll structure and each of uniform width.
Claim 15
Dependent Claim
154 words
A toothbrush comprising: a brushhead comprising a base and bristle tufts projecting from said base, said brushhead having a first and second end; and a handle connected to said second end of said brushhead, said handle comprising: an elongated arm formed of a plastic traversing the full length of said handle, said arm having a top, bottom and two lateral outer surfaces with the two lateral surfaces being disposed between and on opposite sides of said top and bottom surfaces; a recess formed within said top surface of said arm in an area adjacent to connection with said brushhead; a pressure pad arranged within said recess of said arm as an elongate body along said top surface of said arm; and at least one anti-roll structure protruding from and circumscribing said bottom and lateral surfaces of said arm, said at least one anti-roll structure being positioned to flank and extend below said pressure pad.
Claim 16
Dependent Claim
154 words
A toothbrush comprising: a brushhead comprising a base and bristle tufts projecting from said base, said brushhead having a first and second end; and a handle connected to said second end of said brushhead, said handle comprising: an elongated arm formed of a plastic traversing the full length of said handle, said arm having a top, bottom and two lateral outer surfaces with the two lateral surfaces being disposed between and on opposite sides of said top and bottom surfaces; a recess formed within said top surface of said arm in an area adjacent to connection with said brushhead; a pressure pad arranged within said recess of said arm as an elongate body along said top surface of said arm; and at least one anti-roll structure protruding from and circumscribing said bottom and lateral surfaces of said arm, said at least one anti-roll structure being positioned to flank and extend below said pressure pad.
Claim 17
Dependent Claim
21 words
A toothbrush according to claim 14 wherein said pressure pad and said at least one anti-roll structure are of unitary construction.
Claim 18
Dependent Claim
27 words
A toothbrush according to claim 14 wherein the recess is saddle shaped and defined by an elongated concave mouth oriented along a longitudinal axis of said arm.
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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) | 1998-03-20 | 1998-09-19 | 1999-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-20 | 2002-09-19 | 2003-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-20 | 2006-09-19 | 2007-03-21 | $7700.00 | Window Closed / Lapsed |