Patent US603541A successfully refreshed from Google Patents.
Patent US3577640A successfully refreshed from Google Patents.
US3577640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental clutches, and method and apparatus for making
Assignee: Individual
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Filing: 1969-10-08
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Granted: 1971-05-04
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Expires: 1989-10-08
Abstract
Abstract A dental clutch is disclosed consisting of a rigid tray made of a sheet of plastic material which is shaped to fit over and around the tooth structure of one jaw of a patient; and a preformed plastic stud block having a curved rear face and having a front flat face in which two laterally separated, parallel threaded openings are formed; the stud block being secured to the front vertical surface of the tray so that the threaded openings lie in a plane which is common to the tooth structure. A method of aligning upper and lower clutches for a patient is also disclosed, in which the threaded openings of the two stud blocks are located in planes which are spaced apart but parallel to each other. Also disclosed is an alignment fixture for supporting the stud blocks in their aligned relationship during attachment to the respective trays.
Inventors
- 👤 Robert L Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:31
CPC Classifications
A; A61; A61C; A61C11/00; A61C11/02; A61C11/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
151 words
A method of preparing a pair of dental clutches, comprising: preparing rigid upper and lower trays, each being shaped to fit over and around the tooth structure of the corresponding jaw of the patient; selecting a pair of stud blocks, each having a vertically disposed front face in which two laterally separated, parallel threaded openings are formed, and each having a rear face which is concavely curved in a lateral direction; supporting the upper and lower trays in relative positions which correspond to the centric relation position of the patient; supporting the stud blocks in vertically spaced positions such that the plane of the threaded openings of the upper stud block is precisely parallel to the plane of the threaded openiNgs of the lower stud block; moving the stud blocks into engagement with their respective trays while maintaining said precisely parallel relationship; and securing each stud block to its associated tray.
Claim 2
Independent Claim
151 words
A method of preparing a pair of dental clutches, comprising: preparing rigid upper and lower trays, each being shaped to fit over and around the tooth structure of the corresponding jaw of the patient; selecting a pair of stud blocks, each having a vertically disposed front face in which two laterally separated, parallel threaded openings are formed, and each having a rear face which is concavely curved in a lateral direction; supporting the upper and lower trays in relative positions which correspond to the centric relation position of the patient; supporting the stud blocks in vertically spaced positions such that the plane of the threaded openings of the upper stud block is precisely parallel to the plane of the threaded openiNgs of the lower stud block; moving the stud blocks into engagement with their respective trays while maintaining said precisely parallel relationship; and securing each stud block to its associated tray.
Claim 3
Dependent Claim
136 words
A dental clutch comprising: a rigid tray consisting of a sheet of plastic material shaped to fit over and around the tooth structure of one jaw of a patient, and having a generally vertical front surface which curves rearwardly at its lateral sides; a generally rectangular plastic stud block having a flat vertically disposed front face in which two laterally separated, parallel threaded openings are formed which extend rearwardly into said block, and having a vertical rear surface which curves rearwardly at its lateral sides so as to fit about the front surface of said tray; and bonding material securing the rear surface of said stud block to the front surface of said tray; said stud block being so aligned with said tray that said threaded openings lie in a plane common to said tooth structure.
Claim 4
Dependent Claim
136 words
A dental clutch comprising: a rigid tray consisting of a sheet of plastic material shaped to fit over and around the tooth structure of one jaw of a patient, and having a generally vertical front surface which curves rearwardly at its lateral sides; a generally rectangular plastic stud block having a flat vertically disposed front face in which two laterally separated, parallel threaded openings are formed which extend rearwardly into said block, and having a vertical rear surface which curves rearwardly at its lateral sides so as to fit about the front surface of said tray; and bonding material securing the rear surface of said stud block to the front surface of said tray; said stud block being so aligned with said tray that said threaded openings lie in a plane common to said tooth structure.
Claim 5
Dependent Claim
76 words
A dental clutch as claimed in claim 2 wherein said tray has a generally vertical rear surface which curves rearwardly at its lateral sides: and which further includes a semicircular plastic insert horizontally disposed within said tray and bonded to said rear surface thereof opposite to said stud block, said insert having a centrally located and vertically aligned threaded opening; and a height-adjusting screw received within and extending upwardly from said threaded opening of said insert.
References Cited (Backward Citations)
US2283385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |