US4534340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination handle
Assignee: TDY Industries LLC
•
Filing: 1983-08-01
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Granted: 1985-08-13
•
Expires: 2003-08-01
Abstract
Abstract Successively-delivered liquid pulses are led into an elongated hollowed handle of a size and shape to be grasped by the human hand. A nozzle, mounted to the handle, delivers those pulses against the teeth and gums of the user. Also mounted to the handle is a toothbrush for scrubbing the teeth and massaging the gums. Included within the handle are elements that cooperate to drive the toothbrush relative thereto.
Inventors
- 👤 Ronald R. Kerr, deceased
- 👤 David W. Smith
- 👤 John M. Trenary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:11
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/16; A61C17/22; A61C17/24; A61C17/30; A61C17/02; A61C17/028
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
169 words
Oral hygiene apparatus comprising: a source of a succession of liquid pulses; an elongated, hollowed handle of a size and shape to be grasped by the human hand; means for delivering said pulses into the interior of said handle; a nozzle for delivering said pulses against the teeth and gums of the user; means for mounting said nozzle to said handle for receiving said pulses; a toothbrush for scrubbing said teeth and massaging said gums; means for mounting said toothbrush to said handle; means included within said handle for moving said toothbrush relative to said handle in response to said pulses; a valve disposed within said handle and actuatable automatically upon mounting of said nozzle to said handle for conveying said pulses only into said nozzle, said valve being actuated by the inner end of said nozzle upon its insertion into said handle; and said valve being located within said handle in a position to be biased into its closed position by said pulses when so moving said toothbrush.
Claim 2
Dependent Claim
169 words
Oral hygiene apparatus comprising: a source of a succession of liquid pulses; an elongated, hollowed handle of a size and shape to be grasped by the human hand; means for delivering said pulses into the interior of said handle; a nozzle for delivering said pulses against the teeth and gums of the user; means for mounting said nozzle to said handle for receiving said pulses; a toothbrush for scrubbing said teeth and massaging said gums; means for mounting said toothbrush to said handle; means included within said handle for moving said toothbrush relative to said handle in response to said pulses; a valve disposed within said handle and actuatable automatically upon mounting of said nozzle to said handle for conveying said pulses only into said nozzle, said valve being actuated by the inner end of said nozzle upon its insertion into said handle; and said valve being located within said handle in a position to be biased into its closed position by said pulses when so moving said toothbrush.
Claim 3
Dependent Claim
41 words
Apparatus as defined in claim 1 which further includes: a manually-operable valve located in the path of said liquid received from said delivery means; and means included in said path for accumulating pressure in said pulses when said valve is closed.
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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) | 1988-08-12 | 1989-02-11 | 1989-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-12 | 1993-02-11 | 1993-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-12 | 1997-02-11 | 1997-08-13 | $7700.00 | Window Closed / Lapsed |