Patent US3916525A successfully refreshed from Google Patents.
US3916525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swaged metal dental crowns
Assignee: Individual
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Filing: 1971-01-21
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Granted: 1975-11-04
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Expires: 1991-01-21
Abstract
Abstract A swaged crown or band useful in the fields of general preventive dentistry and orthodontic work produced by placing a crown blank upon a rigid die of the tooth to be banded or crowned and then forcing the die with the blank thereon between confined laminae of a non-rigid material, such as a roll of cloth tape. When the die is forced completely into the laminae, the blank assumes the shape of the die only in the direction in which it is forced, and not in any transverse direction. Thus, the product is a crown which is swaged on the occlusal surface and on the occlusal one-third or one-half of the sides of the tooth down to, but not including, the undercut portion which is normally designated as the gingival one-third or gingival one-half of the tooth.
Inventors
- 👤 Arnold J Hirsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:50
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0003; A61C5/00; A61C5/70; A61C5/77
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
92 words
A method for swaging dental crowns and bands to conform to the contour of a tooth to be crowned except for the undercut portion of the tooth comprising a. placing a crown blank upon a rigid copy of the tooth to be crowned and b. then forcing said copy with said blank thereon between confined laminae of a non-rigid material which 1. exerts a resistive force against the insertion of said copy and blank and 2. the resistive force being only in the direction in which said copy and blank are forced.
Claim 2
Independent Claim
92 words
A method for swaging dental crowns and bands to conform to the contour of a tooth to be crowned except for the undercut portion of the tooth comprising a. placing a crown blank upon a rigid copy of the tooth to be crowned and b. then forcing said copy with said blank thereon between confined laminae of a non-rigid material which 1. exerts a resistive force against the insertion of said copy and blank and 2. the resistive force being only in the direction in which said copy and blank are forced.
Claim 3
Dependent Claim
23 words
The method for swaging dental crowns and bands described in claim 1, wherein said confined laminae are comprised of layers of cloth tape.
Claim 4
Dependent Claim
16 words
the resistive force being only in the direction in which said copy and blank are forced.
Claim 5
Dependent Claim
16 words
the resistive force being only in the direction in which said copy and blank are forced.
Claim 6
Dependent Claim
31 words
The method for swaging dental crowns and bands described in claim 1, wherein said laminae are at least partially confined in the direction normal to the major surfaces of said laminae.
Claim 7
Dependent Claim
29 words
The method for swaging dental crowns and bands defined in claim 1, wherein said copy with said blank thereon is forced between layers of a roll of cloth tape.
Claim 8
Independent Claim
147 words
A method for swaging dental crowns and bands comprising: a. placing a crown blank upon a rigid copy of the tooth to be crowned, said crown blank having an aperture in the end wall thereof; b. forcing said copy with said blank thereon between confined laminae of a non-rigid material; c. removing said blank from said copy; d. inserting a metal insert over said aperture and partially securing said insert to said blank; e. placing said blank with said insert therein over said copy; f. then forcing said copy with said blank and insert thereon between confined laminae of a non-rigid material; g. then removing said blank from said copy; h. welding said insert to said blank; i. then forcing said copy with said blank, with said insert welded thereon between confined laminae of a non-rigid material; and j. then boring a small hole in said insert.
Claim 9
Independent Claim
147 words
A method for swaging dental crowns and bands comprising: a. placing a crown blank upon a rigid copy of the tooth to be crowned, said crown blank having an aperture in the end wall thereof; b. forcing said copy with said blank thereon between confined laminae of a non-rigid material; c. removing said blank from said copy; d. inserting a metal insert over said aperture and partially securing said insert to said blank; e. placing said blank with said insert therein over said copy; f. then forcing said copy with said blank and insert thereon between confined laminae of a non-rigid material; g. then removing said blank from said copy; h. welding said insert to said blank; i. then forcing said copy with said blank, with said insert welded thereon between confined laminae of a non-rigid material; and j. then boring a small hole in said insert.
Claim 10
Dependent Claim
192 words
A dental crown of the type comprising a metallic cup which is substantially cylindrical along substantially its entire length and having a cylindrical axis; said cup having a top surface whcih is conformed in general to the occlusal surface of a tooth of an intended wearer, and said cup extending over the undercut portion of the tooth in a direction parallel to the cylindrical axis of said cup whereby said cup is not conformed to the shape of the undercut portion in either of the directions parallel or transverse to the cylindrical axis of said cup; the improvement in combination therewith of a swaged crown, comprising: a. said top surface of said cup being swaged to precisely conform to the occlusal surface of a precise copy of the tooth of an intended wearer and characterized in that said swaged top surface is formed by subjecting said cup to resistive forces substantially parallel to the cylindrical axis of said cup, said top surface being conformed to said natural tooth by said parallel resistive forces as provided by resistance produced by confined lmainae of a non-rigid material through which said cup has been forced.
Claim 11
Dependent Claim
192 words
A dental crown of the type comprising a metallic cup which is substantially cylindrical along substantially its entire length and having a cylindrical axis; said cup having a top surface whcih is conformed in general to the occlusal surface of a tooth of an intended wearer, and said cup extending over the undercut portion of the tooth in a direction parallel to the cylindrical axis of said cup whereby said cup is not conformed to the shape of the undercut portion in either of the directions parallel or transverse to the cylindrical axis of said cup; the improvement in combination therewith of a swaged crown, comprising: a. said top surface of said cup being swaged to precisely conform to the occlusal surface of a precise copy of the tooth of an intended wearer and characterized in that said swaged top surface is formed by subjecting said cup to resistive forces substantially parallel to the cylindrical axis of said cup, said top surface being conformed to said natural tooth by said parallel resistive forces as provided by resistance produced by confined lmainae of a non-rigid material through which said cup has been forced.
Claim 12
Dependent Claim
79 words
The dental crown according to claim 6 further comprising an insert member permanently affixed to said top surface of said crown with both said insert and said crown being swaged to precisely conform to said tooth of said wearer, said swaged conformation being characterized by the forming of both said insert and said cup through confined laminae of a non-rigid material to swage said cup and insert by providing resistive forces parallel to the axis of said cylindrical cup.
Claim 13
Dependent Claim
145 words
A dental crown of the type comprising a metallic cup which is substantially cylindrical along substantially its entire length and having a cylindrical axis; said cup having a top surface which is conformed in general to the occlusal surface of a tooth of an intended wearer, and said cup extending over the undercut portion of the tooth in a direction parallel to the cylindrical axis of said cup whereby said cup is not conformed to the shape of the undercut portion in either of the directions parallel or transverse to the cylindrical axis of said cup, the improvement in combination therewith of a swaged crown comprising: a. an insert member rigidly coupled to the top surface of said crown, said insert and said top surface of said crown being swaged to precisely conform to the occlusal surface of the natural tooth of an intended wearer.
Claim 14
Dependent Claim
145 words
A dental crown of the type comprising a metallic cup which is substantially cylindrical along substantially its entire length and having a cylindrical axis; said cup having a top surface which is conformed in general to the occlusal surface of a tooth of an intended wearer, and said cup extending over the undercut portion of the tooth in a direction parallel to the cylindrical axis of said cup whereby said cup is not conformed to the shape of the undercut portion in either of the directions parallel or transverse to the cylindrical axis of said cup, the improvement in combination therewith of a swaged crown comprising: a. an insert member rigidly coupled to the top surface of said crown, said insert and said top surface of said crown being swaged to precisely conform to the occlusal surface of the natural tooth of an intended wearer.
Claim 15
Dependent Claim
19 words
The dental crown according to claim 8 further including an aperture located on said top surface of said crown.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |