US4380434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Detent device for a removable dental prosthesis
Assignee: G H ACQUISITION CORP A CORP OF
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Filing: 1981-04-07
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Granted: 1983-04-19
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Expires: 2001-04-07
Abstract
Abstract A detent device for removably securing a dental prosthesis in a patient's mouth, having a spring loaded plunger movably disposed in an externally threaded tubular member with an end portion of the plunger projecting outwardly therefrom. A positioning spring member is enclosed in the dental prosthesis for determining the location of the tubular member therein, and for receiving the threads of the tubular member for retention thereof in the dental prosthesis. An externally threaded plug member is engaged in the spring member when the dental prosthesis is being formed to provide an internally threaded opening in the dental prosthesis for receiving the threaded tubular member after the plug member is removed from the dental prosthesis. A dental tool engages a front portion of the tubular member for threading the tubular member into the dental prosthesis to a selected position therein. A longitudinally extending slot is provided across the threads of the tubular member to receive an adhesive for securing the tubular member in the selected position. A recess is provided in a natural tooth of the patient for receiving the plunger therein to removably secure the dental prosthesis in the patient's mouth.
Inventors
- 👤 Bernard Weissman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:52
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/225; A61C13/277
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
140 words
A detent device for a removable dental prosthesis, said device comprising: a tubular member, said tubular member being externally threaded; a spring loaded plunger movably disposed in said tubular member with an end portion of said plunger projecting outwardly from said tubular member; stop means within said tubular member for limiting longitudinal movement of said plunger end portion; a spring member enclosable in the dental prosthesis when the dental prosthesis is being formed, said spring member determining location of said tubular member in the dental prosthesis and retaining said tubular member in the dental prosthesis; said spring member having helical loops; said tubular member being inserted through said loops with said loops engaging the external threads of said tubular member; and said spring member including securing means for providing a fixed securement of said spring member in the dental prosthesis.
Claim 2
Dependent Claim
140 words
A detent device for a removable dental prosthesis, said device comprising: a tubular member, said tubular member being externally threaded; a spring loaded plunger movably disposed in said tubular member with an end portion of said plunger projecting outwardly from said tubular member; stop means within said tubular member for limiting longitudinal movement of said plunger end portion; a spring member enclosable in the dental prosthesis when the dental prosthesis is being formed, said spring member determining location of said tubular member in the dental prosthesis and retaining said tubular member in the dental prosthesis; said spring member having helical loops; said tubular member being inserted through said loops with said loops engaging the external threads of said tubular member; and said spring member including securing means for providing a fixed securement of said spring member in the dental prosthesis.
Claim 3
Dependent Claim
44 words
A detent device as in claim 1, wherein said securing means includes arm sections extending from opposite ends of said spring member loops, said arm sections joining together to provide a handle section, said arm and handle sections being enclosable in the dental prosthesis.
Claim 4
Dependent Claim
49 words
A detent device as in claim 1, including a threaded plug member disposable through said spring member loops with said loops engaging the threads of said plug member when the dental prosthesis is being formed for providing internal threads in the dental prosthesis to receive the threaded tubular member.
Claim 5
Dependent Claim
37 words
A detent device as in claim 1, wherein a portion of said tubular member includes a pair of opposing flat parallel surfaces for use in threading said tubular member into the dental prosthesis to a selected position.
Claim 6
Dependent Claim
35 words
A detent device as in claim 6, including a tool having spaced apart arms for engaging said flat parallel surfaces of said tubular member to rotate said tubular member for threading into the dental prosthesis.
Claim 7
Dependent Claim
45 words
A detent device as in claim 1, wherein a slot is longitudinally disposed across the threads of said tubular member for receiving an adhesive therein to prevent rotation of said tubular member for securing said tubular member in the dental prosthesis at a selected position.
Claim 8
Dependent Claim
29 words
A detent device as in claim 1, wherein an end portion of said tubular member is unthreaded to provide a pilot for the threaded portion of the tubular member.
Claim 9
Dependent Claim
173 words
A detent device for a removable dental prosthesis, said device comprising: a tubular member; a spring loaded plunger movably disposed in said tubular member with an end portion of said plunger projecting outwardly from said tubular member; stop means within said tubular member for limiting longitudinal movement of said plunger end portion; said tubular member including adjustment means for permitting said tubular member to be longitudinally moved in the dental prosthesis to a selected position; said tubular member including securement means for securing said tubular member in the dental prosthesis at said selected position; said adjustment means including external threads provided on said tubular member for threading said tubular member into the dental prosthesis; a spring member having helical loops enclosable in the dental prosthesis; said tubular member being inserted through said loops with said loops engaging said external threads of said tubular member to retain said tubular member in the dental prosthesis; and said spring member including securing means for providing a fixed securement of said spring member in the dental prosthesis.
Claim 10
Dependent Claim
173 words
A detent device for a removable dental prosthesis, said device comprising: a tubular member; a spring loaded plunger movably disposed in said tubular member with an end portion of said plunger projecting outwardly from said tubular member; stop means within said tubular member for limiting longitudinal movement of said plunger end portion; said tubular member including adjustment means for permitting said tubular member to be longitudinally moved in the dental prosthesis to a selected position; said tubular member including securement means for securing said tubular member in the dental prosthesis at said selected position; said adjustment means including external threads provided on said tubular member for threading said tubular member into the dental prosthesis; a spring member having helical loops enclosable in the dental prosthesis; said tubular member being inserted through said loops with said loops engaging said external threads of said tubular member to retain said tubular member in the dental prosthesis; and said spring member including securing means for providing a fixed securement of said spring member in the dental prosthesis.
Claim 11
Dependent Claim
37 words
A detent device as in claim 8, wherein a portion of said tubular member includes a pair of opposing flat parallel surfaces for use in threading said tubular member into the dental prosthesis to the selected position.
Claim 12
Dependent Claim
35 words
A detent device as in claim 8, including a tool having spaced apart arms for engaging said flat parallel surfaces of said tubular member to rotate said tubular member for threading into the dental prosthesis.
Claim 13
Dependent Claim
43 words
A detent device as in claim 8, wherein said securement means includes a slot longitudinally disposed across said threads of said tubular member for receiving an adhesive therein to prevent rotation of said tubular member in the dental prosthesis at the selected position.
Claim 14
Dependent Claim
49 words
A detent device as in claim 8, including a threaded plug member disposable through said spring member loops with the loops engaging the threads of said plug member when the dental prosthesis is being formed for providing internal threads in the dental prosthesis to receive the threaded tubular member.
Claim 15
Dependent Claim
53 words
A detent device as in claim 8, wherein said securing means includes arm sections extending from opposite ends of said spring member loops, said arm sections joining together to provide a handle section, said arm and handle sections being enclosable in the dental prosthesis for securing the spring member in the dental prosthesis.
References Cited (Backward Citations)
US3717931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-18 | 1986-10-18 | 1987-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-18 | 1990-10-18 | 1991-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-18 | 1994-10-18 | 1995-04-19 | $7700.00 | Window Closed / Lapsed |