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US4277889A
Expired / Lapsed
US
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Glass cutting means
Assignee: West End Glass Co Ltd
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Filing: 1979-12-03
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Granted: 1981-07-14
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Expires: 1999-12-03
Abstract
Abstract A glass cutter for flat glass comprising a frame having a first arm connected to a transversely disposed second arm, a glass cutting head being slidably disposed on the first arm, which glass cutting head may be selectively locked in position at any desired point along the first arm, and the second arm being provided with rollers or wheels adapted to engage and be guided by an edge of a sheet of glass while the cutting head engages a face thereof. The rollers or wheels being preferably mounted on axes disposed at an angle of from 15° to 75°, preferably 30° to 60° to the longitudinal axis of the first arm.
Inventors
- 👤 Edwin T. Oberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:50
CPC Classifications
C; C03; C03B; C03B33/00; C03B33/10; C03B33/12; C03B37/00; C03B37/10; C03B37/16; D; D01; D01G; D01G1/00; D01G1/02; D01G1/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
113 words
A glass cutting device for flat glass comprising a glass cutting head; a guiding frame including a first arm and a second arm which are disposed transversely of one another, said cutting head being slidably positioned along said first arm having a longitudinal axis; and a plurality of rotary rollers having axes of rotation and disposed along said second arm in a spaced relationship, said axes of rotation of said rollers being disposed at an angle of 15° to 75° to said longitudinal axis, said rollers being adapted to engage with an edge of a sheet of glass to be cut when said cutting head engages with the face of the glass sheet.
Claim 2
Dependent Claim
113 words
A glass cutting device for flat glass comprising a glass cutting head; a guiding frame including a first arm and a second arm which are disposed transversely of one another, said cutting head being slidably positioned along said first arm having a longitudinal axis; and a plurality of rotary rollers having axes of rotation and disposed along said second arm in a spaced relationship, said axes of rotation of said rollers being disposed at an angle of 15° to 75° to said longitudinal axis, said rollers being adapted to engage with an edge of a sheet of glass to be cut when said cutting head engages with the face of the glass sheet.
Claim 3
Dependent Claim
41 words
The device of claim 1, in which the line of contact of said rollers with the edge of the glass sheet is linear and is disposed substantially at right angles to the movement of said cutting head along said first arm.
Claim 4
Dependent Claim
22 words
The device of claim 2, wherein each of said rollers has a circumferential face, said face being formed with a circumferential groove.
Claim 5
Dependent Claim
32 words
The device of claim 3, wherein said cutting head is provided with restraining means which can retain said cutting head in any desired position along said longitudinal axis of said first arm.
Claim 6
Dependent Claim
28 words
The device of claim 4, wherein said restraining means comprise manually actuable clamping means adapted to clamp said cutting head on said first arm in any desired position.
Claim 7
Dependent Claim
13 words
The device of claim 1, wherein said angle is preferably 30° to 60°.
References Cited (Backward Citations)
US3644994A
Cited
US4030195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-13 | 1985-01-12 | 1985-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-13 | 1989-01-12 | 1989-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-13 | 1993-01-12 | 1993-07-14 | $7700.00 | Window Closed / Lapsed |