US4711654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for shaping glass sheet
Assignee: Nippon Sheet Glass Co Ltd
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Filing: 1987-01-30
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Granted: 1987-12-08
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Expires: 2007-01-30
Abstract
Abstract A glass sheet shaping apparatus shapes a curved reinforced glass sheet by bending a glass sheet which has been heated by a heating furnace up to a softening point and thereafter cooling the bent glass sheet with a cooling medium and imparting a prescribed stress to the glass sheet. The glass sheet is bent by upper and lower mold members fixed to respective common plates which are interconnected by positioning rods. The unit assembly comprising these upper and lower mold members and common plates is carried on a carrier and moved by a suitable displacing device onto a lower surface plate located in a frame assembly for replacing the existing unit assembly.
Inventors
- 👤 Naohiro Iida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:35
CPC Classifications
C; C03; C03B; C03B23/00; C03B23/02; C03B23/023; C03B23/03; C03B27/00; C03B27/04; C03B27/044; C03B27/0442; C03B27/0445; C03B23/0302
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
237 words
An apparatus for shaping a curved reinforced glass sheet by bending a glass sheet which has been heated by a heating furnace up to a softening point and thereafter cooling the bent glass sheet with a cooling medium and imparting a prescribed stress to the glass sheet, said apparatus comprising: upper and lower mold members for bending the glass sheet; a frame assembly having a top plate, a bottom plate, and a plurality of posts vertically connected between said top and bottom plates; a first vertically displacing device mounted on said top plate; an upper surface plate coupled to said first vertically displacing device and vertically movable thereby in said frame assembly; a second vertically displacing device mounted on said bottom plate; a lower surface plate coupled to said second vertically displacing device and vertically movable thereby in said frame assembly; a first common plate fixed to said upper mold member and detachably secured to said upper surface plate by fixing means; a second common plate fixed to said lower mold member and detachably secured to said lower surface plate by fixing means; positioning means disposed between said first and second common plates for positioning said upper and lower mold members with respect to each other; and a carrier for carrying a unit assembly comprising said upper and lower mold members and said first and second common plates upon replacement of the upper and lower mold members.
Claim 2
Independent Claim
237 words
An apparatus for shaping a curved reinforced glass sheet by bending a glass sheet which has been heated by a heating furnace up to a softening point and thereafter cooling the bent glass sheet with a cooling medium and imparting a prescribed stress to the glass sheet, said apparatus comprising: upper and lower mold members for bending the glass sheet; a frame assembly having a top plate, a bottom plate, and a plurality of posts vertically connected between said top and bottom plates; a first vertically displacing device mounted on said top plate; an upper surface plate coupled to said first vertically displacing device and vertically movable thereby in said frame assembly; a second vertically displacing device mounted on said bottom plate; a lower surface plate coupled to said second vertically displacing device and vertically movable thereby in said frame assembly; a first common plate fixed to said upper mold member and detachably secured to said upper surface plate by fixing means; a second common plate fixed to said lower mold member and detachably secured to said lower surface plate by fixing means; positioning means disposed between said first and second common plates for positioning said upper and lower mold members with respect to each other; and a carrier for carrying a unit assembly comprising said upper and lower mold members and said first and second common plates upon replacement of the upper and lower mold members.
Claim 3
Dependent Claim
27 words
An apparatus according to claim 1, wherein each of said fixing means comprises a plurality of clamps mounted on one of said upper and lower surface plates.
Claim 4
Dependent Claim
57 words
An apparatus according to claim 1, wherein said positioning means comprises a plurality of seats mounted on a lower surface of said first common plate, a plurality of seats mounted on an upper surface of said second common plate, and a plurality of positioning rods detachably disposed between the seats on the first and second common plates.
Claim 5
Dependent Claim
55 words
An apparatus according to claim 1, wherein said lower surface plate has a plurality of steel balls and a plurality of springs disposed in said lower surface plate for normally urging said steel balls, respectively, to move upwardly for allowing the steel balls to project slightly from an upper surface of said lower surface plate.
Claim 6
Dependent Claim
49 words
An apparatus according to claim 1, wherein said carrier has a plurality of steel balls and a plurality of springs disposed in said carrier for normally urging said steel balls, respectively, to move upwardly for allowing the steel balls to project slightly from an upper surface of said carrier.
Claim 7
Dependent Claim
30 words
An apparatus according to claim 1, further including moving means for moving said unit assembly on said carrier to and away from said lower surface plate in said frame assembly.
References Cited (Backward Citations)
JPS5312931A
Cited
US4092141A
Cited
US4108624A
Cited
US4470835A
Cited
US4501603A
Cited
US4662925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |