Patent US3986913A successfully refreshed from Google Patents.
US3986913A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of repairing a crack in a pane of plate glass
Assignee: Individual
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Filing: 1975-04-24
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Granted: 1976-10-19
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Expires: 1995-04-24
Abstract
Abstract The invention provides for repairing a crack in a pane of plate glass caused by the impact of a hard object without removing the glass from its location by cutting out a section from the glass surrounding the crack and replacing it with a disc of a similar sheet of glass.
Inventors
- 👤 Robert A. Walz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:03
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/02; B28D1/04; B28D1/041; C; C03; C03C; C03C27/00; C03C27/06; C03C27/10; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T428/00; Y10T428/20; Y10T428/22
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
71 words
The process of repairing a crack in a pane of plate glass which comprises cutting a circular hole through the pane of a diameter sufficient to surround the crack, cutting a cylindrical plug from a similar pane of glass having a diameter slightly less than that of said hole and placing said plug in said hole leaving a small annular clearance space, and filling said clearance space with a curable cement.
Claim 2
Dependent Claim
71 words
The process of repairing a crack in a pane of plate glass which comprises cutting a circular hole through the pane of a diameter sufficient to surround the crack, cutting a cylindrical plug from a similar pane of glass having a diameter slightly less than that of said hole and placing said plug in said hole leaving a small annular clearance space, and filling said clearance space with a curable cement.
Claim 3
Dependent Claim
99 words
The process of repairing a crack in a pane of plate glass which comprises cutting a circular hole through the pane of a diameter sufficient to surround the crack including cutting into said pane from opposite sides to avoid splinters and a rough edge resulting from a single cut breaking through the opposite face of the pane, cutting a cylindrical plug from a similar pane of glass having a diameter slightly less than that of said hole and placing said plug in said hole leaving a small annular clearance space, and filling said clearance space with a curable cement.
Claim 4
Dependent Claim
99 words
The process of repairing a crack in a pane of plate glass which comprises cutting a circular hole through the pane of a diameter sufficient to surround the crack including cutting into said pane from opposite sides to avoid splinters and a rough edge resulting from a single cut breaking through the opposite face of the pane, cutting a cylindrical plug from a similar pane of glass having a diameter slightly less than that of said hole and placing said plug in said hole leaving a small annular clearance space, and filling said clearance space with a curable cement.
Claim 5
Dependent Claim
90 words
The process of repairing a crack in a pane of plate glass which comprises cutting a circular hole through the pane of a diameter sufficient to surround the crack, cutting a cylindrical plug from a similar pane of glass having a diameter slightly less by a few thousandths of an inch than that of said hole and placing said plug in said hole leaving a small annular clearance space, filling said clearance space with a curable cement, and curing said cement to fix said plug in place in said hole.
Claim 6
Dependent Claim
90 words
The process of repairing a crack in a pane of plate glass which comprises cutting a circular hole through the pane of a diameter sufficient to surround the crack, cutting a cylindrical plug from a similar pane of glass having a diameter slightly less by a few thousandths of an inch than that of said hole and placing said plug in said hole leaving a small annular clearance space, filling said clearance space with a curable cement, and curing said cement to fix said plug in place in said hole.
Claim 7
Independent Claim
154 words
The method of repairing a crack in a pane of plate glass caused by the impact of a hard object comprising drilling a small diameter hole through the pane on the axis of said crack and normal to said pane, drilling into a first side of the pane part way through the thickness thereof to form a circular cut of a diameter larger than said hole, drilling from the opposite side of the pane to form a circular cut from said opposite side to match and merge into said first larger diameter cut, removing the piece of glass so cut out leaving a circular aperture, forming a cylindrical disc of plate glass from another pane of like characteristics and having an outer diameter slightly less than the diameter of said aperture, and fixing said disc in said aperture by means of a plastic cement which fills the space therebetween to form a permanent bond.
Claim 8
Independent Claim
154 words
The method of repairing a crack in a pane of plate glass caused by the impact of a hard object comprising drilling a small diameter hole through the pane on the axis of said crack and normal to said pane, drilling into a first side of the pane part way through the thickness thereof to form a circular cut of a diameter larger than said hole, drilling from the opposite side of the pane to form a circular cut from said opposite side to match and merge into said first larger diameter cut, removing the piece of glass so cut out leaving a circular aperture, forming a cylindrical disc of plate glass from another pane of like characteristics and having an outer diameter slightly less than the diameter of said aperture, and fixing said disc in said aperture by means of a plastic cement which fills the space therebetween to form a permanent bond.
Claim 9
Independent Claim
154 words
The method of repairing a crack in a pane of plate glass caused by the impact of a hard object comprising drilling a small diameter hole through the pane, drilling into a first side of the pane part way through the thickness thereof to form a circular cut of a diameter larger than said hole, drilling from the opposite side of the pane using a pilot for the drill fitting in said small diameter hole to form a circular cut from said opposite side to match and merge into said first larger diameter cut, removing the piece of glass so cut out leaving a circular aperture, forming a cylindrical disc of plate glass from another pane of like characteristics and having an outer diameter slightly less than the diameter of said aperture, and fixing said disc in said aperture by means of a cement which fills the space therebetween to form a permanent bond.
Claim 10
Independent Claim
154 words
The method of repairing a crack in a pane of plate glass caused by the impact of a hard object comprising drilling a small diameter hole through the pane, drilling into a first side of the pane part way through the thickness thereof to form a circular cut of a diameter larger than said hole, drilling from the opposite side of the pane using a pilot for the drill fitting in said small diameter hole to form a circular cut from said opposite side to match and merge into said first larger diameter cut, removing the piece of glass so cut out leaving a circular aperture, forming a cylindrical disc of plate glass from another pane of like characteristics and having an outer diameter slightly less than the diameter of said aperture, and fixing said disc in said aperture by means of a cement which fills the space therebetween to form a permanent bond.
Claim 11
Dependent Claim
26 words
The method of claim 4 including the step of forming a small taper on the aperture to allow said disc to fit centrally in said aperture.
Claim 12
Dependent Claim
24 words
The method of claim 2 in which the cutting operation is guided to maintain the cut in a predetermined plane and free of chatter.
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) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |