US3875665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual pin for prosthodontic casts
Assignee: G H ACQUISITION CORP A CORP OF
•
Filing: 1973-12-19
•
Granted: 1975-04-08
•
Expires: 1993-12-19
Abstract
Abstract A device is described suitable for use with dental models which includes a tapered elongate pin having a generally elliptical transverse cross section. A mounting post is connected to the wide end of the elongate pin, the post and the pin generally extending in parallel opposing directions. A key projects radially from the region of the mounting post. A stabilizing platform is connected to the elongate pin in the region of the connection point between the latter and the mounting post. The platform extends in a direction substantially normal to the respective axis of the elongate pin and mounting post. An alignment pin is provided mounted on the platform spaced from and extending in a coextensive direction parallel to the elongate pin. The mounting post and key are adapted to be embedded in a respective hole and keyway of a dental model cast and fixed to the latter by adhesive means or the like to fix the position of the device relative thereto. On the other hand, the elongate pin, the stabilizing platform and the alignment pin extend beyond the surface of the dental model cast and are receivable in corresponding apertures or recesses of a base cast on which the dental model cast is to be removably mounted.
Inventors
- 👤 Bernard Weissman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:50
CPC Classifications
A; A61; A61C; A61C9/00; A61C9/002
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
128 words
A device for use with dental models comprising a tapered elongate pin having a generally elliptical transverse cross section; a mounting post connected to the wider end of said elongate pin, said post and said pin generally extending in parallel opposing directions, said mounting post being adapted to be embedded in a dental model cast to fix the position of the device relative thereto; and an alignment pin spaced from and connected to the wider end of said elongate pin and extending in the same direction as said elongate pin and being parallel to the latter, said elongate and alignment pins extending beyond the dental model cast and being receivable in corresponding complementary apertures of a base cast on which the dental model cast is to be mounted.
Claim 2
Independent Claim
128 words
A device for use with dental models comprising a tapered elongate pin having a generally elliptical transverse cross section; a mounting post connected to the wider end of said elongate pin, said post and said pin generally extending in parallel opposing directions, said mounting post being adapted to be embedded in a dental model cast to fix the position of the device relative thereto; and an alignment pin spaced from and connected to the wider end of said elongate pin and extending in the same direction as said elongate pin and being parallel to the latter, said elongate and alignment pins extending beyond the dental model cast and being receivable in corresponding complementary apertures of a base cast on which the dental model cast is to be mounted.
Claim 3
Dependent Claim
20 words
A device as defined in claim 1, wherein said elongate pin and mounting post are made from a cast material.
Claim 4
Dependent Claim
40 words
A device as defined in claim 1, further comprising an annular enlarged portion surrounding said mounting post proximate said elongate pin, said annular enlarged portion being adapted to be disposed within a counterbore hole formed in the dental model cast.
Claim 5
Dependent Claim
35 words
A device as defined in claim 1, further comprising adhesive means interposed between said mounting post and a hole formed in the dental model cast, whereby the device is fixed to the dental model cast.
Claim 6
Dependent Claim
56 words
A device as defined in claim 1, further comprising a key projecting radially from the region of said mounting post, said key being adapted to be received within a keyway formed in the dental model cast, whereby the device is prevented from rotation when said mounting post and key are embedded in the dental model cast.
Claim 7
Dependent Claim
18 words
A device as defined in claim 1, wherein said elongate pin is substantially longer than said mounting post.
Claim 8
Dependent Claim
22 words
A device as defined in claim 1, wherein said elongate pin and mounting post are substantially aligned along the respective axis thereof.
Claim 9
Dependent Claim
98 words
A device as defined in claim 1, further comprising a stabilizing platform connected to said elongate pin in the region of the connection point between the latter and said mounting post, said platform extending in a direction substantially normal to the respective axis of said elongate pin and mounting post, said alignment pin being mounted on said platform spaced from and extending coextensively in a direction parallel to said elongate pin, said platform and alignment pin being adapted to be received in complementary recesses in the base cast when the dental model cast is positioned in the latter.
Claim 10
Dependent Claim
18 words
A device as defined in claim 8, wherein said elongate pin is substantially longer than said alignment pin.
Claim 11
Dependent Claim
177 words
In a dental model of teeth, wherein segments thereof may be individually removed and replaced in original positions, a first cast forming an impression of at least one tooth on one surface thereof and having a substantially flat surface in opposed relation to said one surface; a second cast provided with a substantially flat surface for abutting against said flat surface of said first cast; and a dual pin embedded in said first cast and comprising two spaced substantially parallel pins of different lengths connected to each other at corresponding ends thereof, said second cast being provided with openings in the flat surface thereof configurated to receive at least portions of said two spaced pins when said flat surfaces are in abutment against one another, whereby the longer pin serves as a locating pin which initially locates and engages a corresponding opening in said second cast and the shorter pin serves as an alignment pin which is received in a corresponding opening to align and fix the position of said first cast relative to said second cast.
Claim 12
Dependent Claim
177 words
In a dental model of teeth, wherein segments thereof may be individually removed and replaced in original positions, a first cast forming an impression of at least one tooth on one surface thereof and having a substantially flat surface in opposed relation to said one surface; a second cast provided with a substantially flat surface for abutting against said flat surface of said first cast; and a dual pin embedded in said first cast and comprising two spaced substantially parallel pins of different lengths connected to each other at corresponding ends thereof, said second cast being provided with openings in the flat surface thereof configurated to receive at least portions of said two spaced pins when said flat surfaces are in abutment against one another, whereby the longer pin serves as a locating pin which initially locates and engages a corresponding opening in said second cast and the shorter pin serves as an alignment pin which is received in a corresponding opening to align and fix the position of said first cast relative to said second cast.
Claim 13
Dependent Claim
22 words
A dental model as defined in claim 10, wherein said longer pin is tapered and has a generally elliptical transverse cross section.
Claim 14
Dependent Claim
60 words
A dental model as defined in claim 10, further comprising a mounting post directed in an opposing direction to that of said two spaced pins and adapted to be embedded in said first cast, and a key projecting radially from said mounting post and adapted to be embedded in said first cast to prevent rotational movement of said dual pin.
References Cited (Backward Citations)
US1711947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |