Patent US3643387A successfully refreshed from Google Patents.
US3643387A
Expired / Lapsed
US
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Endless abrasive belt having an overlapping joint
Assignee: Saint Gobain Abrasives Inc
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Filing: 1970-05-18
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Granted: 1972-02-22
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Expires: 1990-05-18
Abstract
Abstract An endless abrasive belt of the type including one or more sections of backing material supporting an abrasive coating and having adjacent end portions overlapped to form joints extending obliquely of a direction of belt travel is characterized by the abrasive coating on an inner one of the overlapped end portions being removed over the longitudinal extent of the overlapping and the abrasive coating on an outer one of the overlapped end portions being removed only over a longitudinal extent in a range of about 30 to 80 percent of the overlapped distance.
Inventors
- 👤 Hans Hildebrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:02
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
123 words
In an endless, abrasive belt of the type including a stripform backing material supporting a coating of abrasive grain material, overlapped joints extending obliquely of a direction of belt travel and including an outer end portion overlapping an adjacent inner end portion, the improvement comprising: the inner end portion having the abrasive coating removed therefrom in a region extending longitudinally inwardly of a terminus of the inner end portion for a distance substantially coextensive with the extent of overlapping between the adjacent end portions; and the outer end portion having the coating removed therefrom in a region extending longitudinally from a terminus of the outer end portion a distance in a range of about 30 to 80 percent of the extent of overlapping.
Claim 2
Dependent Claim
123 words
In an endless, abrasive belt of the type including a stripform backing material supporting a coating of abrasive grain material, overlapped joints extending obliquely of a direction of belt travel and including an outer end portion overlapping an adjacent inner end portion, the improvement comprising: the inner end portion having the abrasive coating removed therefrom in a region extending longitudinally inwardly of a terminus of the inner end portion for a distance substantially coextensive with the extent of overlapping between the adjacent end portions; and the outer end portion having the coating removed therefrom in a region extending longitudinally from a terminus of the outer end portion a distance in a range of about 30 to 80 percent of the extent of overlapping.
Claim 3
Dependent Claim
45 words
In an endless abrasive belt according to claim 1, comprising the outer overlapped end portion having the abrasive coating removed therefrom over a region extending longitudinally inwardly of the inner end portion terminus for a distance of about 50 percent of the extent of overlapping.
Claim 4
Dependent Claim
52 words
An endless abrasive belt according to claim 1 wherein the extent of overlapping between the adjacent, overlapped end portions is substantially equal to 10 mm., and wherein the outer end portion has the coating removed over a region extending longitudinally inwardly of a terminus thereof for a distance of approximately 5 mm.
Claim 5
Dependent Claim
122 words
An endless abrasive belt comprising: means forming at least one section of sheet-form backing material arranged in a loop and having an outer end portion overlapped and adhered to adjacent inner end portion to form a joint extending obliquely of a direction of belt travel; means forming an abrasive coating adhered to an outwardly projecting surface of said backing material, said coating on said inner end portion terminating along a juncture plane defined by a terminus of said outer end portion, and said coating terminating on said outer end portion along a plane spaced longitudinally inwardly of said outer end portion terminus a distance in a range of 30 to 80 percent of an extent of overlapping between said adjacent end portions.
Claim 6
Dependent Claim
122 words
An endless abrasive belt comprising: means forming at least one section of sheet-form backing material arranged in a loop and having an outer end portion overlapped and adhered to adjacent inner end portion to form a joint extending obliquely of a direction of belt travel; means forming an abrasive coating adhered to an outwardly projecting surface of said backing material, said coating on said inner end portion terminating along a juncture plane defined by a terminus of said outer end portion, and said coating terminating on said outer end portion along a plane spaced longitudinally inwardly of said outer end portion terminus a distance in a range of 30 to 80 percent of an extent of overlapping between said adjacent end portions.
References Cited (Backward Citations)
US1009709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |