US4890349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tooth care atricle such as a toothbrush with replaceable insert
Assignee: DIEDENHOFEN GmbH
•
Filing: 1988-06-21
•
Granted: 1990-01-02
•
Expires: 2008-06-21
Abstract
Abstract A toothbrush comprises a handle with a socket at one end. A brush-carrying insert includes a tongue removably mounted in the socket. A brush protrudes forwardly from the tongue. Adjacent a location where the brush is joined to the tongue, a laterally outwardly projecting sealing lip is formed on the insert, which lip bears elastically against a front rim of the socket. The tongue carries locking ledges of different heights which fit into a groove of the socket. The tongue may include a pressure projection which extends through a hole in the socket rear wall to present an exposed face which can be pushed against to expel the insert. Alternatively, the socket rear wall can be elastically displaceable for expelling the insert.
Inventors
- 👤 Klaus Nitzsche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:13
CPC Classifications
A; A46; A46B; A46B7/00; A46B7/04; A46B7/042; A46B2200/00; A46B2200/10; A46B2200/1066
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
234 words
A tooth care article comprising: a handle including a manual gripping portion at one end and a forwardly opening socket at the other end, said socket terminating in a forwardly facing rim, and a brush insert removably mounted in said socket, said insert comprising a body which includes a rearwardly extending tongue removably mounted in said socket, a tooth care member extending forwardly of said body, and a sealing flange projecting laterally outwardly adjacent a region where said body and tooth care member are joined, said sealing flange elastically abutting said socket rim, said socket including a rear wall having an opening extending therethrough and arranged eccentrically relative to a longitudinal axis of said socket, said tongue including a pressure projection extending into said opening, whereby a rear surface of said pressure projection is exposed to manual pressure, said socket including a locking groove formed in an inner surface thereof, said tongue carrying laterally projecting ledges elastically received in said groove, said tongue including two long side surfaces and two short end surfaces, said ledges projecting from both side surfaces and one end surface, each of said ledges which project from said side surfaces including a tall ledge portion and a short ledge portion, said tall ledge portions disposed adjacent said pressure protrusion and projecting from said tongue farther than said short ledge portions, said ledge on said end surface comprising a short ledge.
Claim 2
Dependent Claim
234 words
A tooth care article comprising: a handle including a manual gripping portion at one end and a forwardly opening socket at the other end, said socket terminating in a forwardly facing rim, and a brush insert removably mounted in said socket, said insert comprising a body which includes a rearwardly extending tongue removably mounted in said socket, a tooth care member extending forwardly of said body, and a sealing flange projecting laterally outwardly adjacent a region where said body and tooth care member are joined, said sealing flange elastically abutting said socket rim, said socket including a rear wall having an opening extending therethrough and arranged eccentrically relative to a longitudinal axis of said socket, said tongue including a pressure projection extending into said opening, whereby a rear surface of said pressure projection is exposed to manual pressure, said socket including a locking groove formed in an inner surface thereof, said tongue carrying laterally projecting ledges elastically received in said groove, said tongue including two long side surfaces and two short end surfaces, said ledges projecting from both side surfaces and one end surface, each of said ledges which project from said side surfaces including a tall ledge portion and a short ledge portion, said tall ledge portions disposed adjacent said pressure protrusion and projecting from said tongue farther than said short ledge portions, said ledge on said end surface comprising a short ledge.
Claim 3
Dependent Claim
26 words
A tooth care article according to claim 1, wherein said sealing flange is elastically prestressed against said rim when said tongue is held in said socket.
Claim 4
Dependent Claim
17 words
A tooth care article according to claim 1, wherein said pressure projection fits sealingly into said opening.
Claim 5
Dependent Claim
17 words
A tooth care article according to claim 1, wherein said tooth care member comprises a bristle brush.
Claim 6
Dependent Claim
141 words
A tooth care article comprising: a handle including a manual gripping portion at one end and a forwardly opening socket at the other end, said socket terminating in a forwardly facing rim, and a brush insert removably mounted in said socket, said insert comprising a body which includes a rearwardly extending tongue removably mounted in said socket, a tooth care member extending forwardly of said body, and a sealing flange projecting laterally outwardly adjacent a region where said body and tooth care member are joined, said sealing flange elastically abutting said socket rim, said socket including a solid rear wall only a portion of which is elastically flexible toward said tongue for forcing said tongue from said socket, said portion of said rear wall formed by a weakened bellows-like area of said rear wall, said weakened area being of endless configuration.
Claim 7
Dependent Claim
141 words
A tooth care article comprising: a handle including a manual gripping portion at one end and a forwardly opening socket at the other end, said socket terminating in a forwardly facing rim, and a brush insert removably mounted in said socket, said insert comprising a body which includes a rearwardly extending tongue removably mounted in said socket, a tooth care member extending forwardly of said body, and a sealing flange projecting laterally outwardly adjacent a region where said body and tooth care member are joined, said sealing flange elastically abutting said socket rim, said socket including a solid rear wall only a portion of which is elastically flexible toward said tongue for forcing said tongue from said socket, said portion of said rear wall formed by a weakened bellows-like area of said rear wall, said weakened area being of endless configuration.
Claim 8
Dependent Claim
17 words
A tooth care article according to claim 5, wherein said tooth care member comprises a bristle brush.
References Cited (Backward Citations)
GB306712A
Cited
US1717125A
Cited
FR37268E
Cited
US2476201A
Cited
US2545814A
Cited
DE3038895A1
Cited
US4411041A
Cited
US4543679A
Cited
FR2559656A1
Cited
US4683604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-01 | 1993-07-03 | 1994-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-01 | 1997-07-03 | 1998-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-01 | 2001-07-03 | 2002-01-02 | $7700.00 | Window Closed / Lapsed |