US4287669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass cutter
Assignee: Toyo Sangyo Co Ltd
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Filing: 1980-06-09
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Granted: 1981-09-08
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Expires: 2000-06-09
Abstract
Abstract A glass cutter including a barrel and a cutter head coaxially provided at the lower end of the barrel. The barrel and the cutter head is hollow along the axial length to accommodate therein a tube. The tube immovably fits within the cylindrical hollow formed in the barrel but is axially movable along the cylindrical hollow formed in the cutter head. A cutting oil reservoir is provided above the tube, from which the cutting oil is supplied to the cutting blade.
Inventors
- 👤 Toshimitsu Arai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:00
CPC Classifications
C; C03; C03B; C03B33/00; C03B33/10; C03B33/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
182 words
A glass cutter comprising a tubular barrel, a sleeve serving as a cutting oil reservoir, the lower end of said sleeve being capped over the upper end of said barrel, a tubular cutter head coaxially provided under said barrel, a tube immovably fitting in a hollow formed in said barrel but being axially movably fitting in a hollow formed in said cutter head, a bolt threaded into the upper end of said sleeve, said bolt being provided with a longitudinal groove in the threaded shank thereof to admit air, means for resiliently connecting said cutter head to said barrel, a cutting blade provided at the lower end of said cutter head, and a wick fitting closely in said tube with the upper and lower ends of said wick projecting from the upper and lower ends of said tube, respectively, the lower end of said wick being normally spaced from said cutting blade as long as said barrel and said cutter head are kept away from each other by the bias of said means for resiliently connecting said cutter head to said barrel.
Claim 2
Dependent Claim
182 words
A glass cutter comprising a tubular barrel, a sleeve serving as a cutting oil reservoir, the lower end of said sleeve being capped over the upper end of said barrel, a tubular cutter head coaxially provided under said barrel, a tube immovably fitting in a hollow formed in said barrel but being axially movably fitting in a hollow formed in said cutter head, a bolt threaded into the upper end of said sleeve, said bolt being provided with a longitudinal groove in the threaded shank thereof to admit air, means for resiliently connecting said cutter head to said barrel, a cutting blade provided at the lower end of said cutter head, and a wick fitting closely in said tube with the upper and lower ends of said wick projecting from the upper and lower ends of said tube, respectively, the lower end of said wick being normally spaced from said cutting blade as long as said barrel and said cutter head are kept away from each other by the bias of said means for resiliently connecting said cutter head to said barrel.
Claim 3
Dependent Claim
28 words
A glass cutter as set forth in claim 1, wherein said means for resiliently connecting said cutter head to said barrel comprises a spring fitting on said tube.
Claim 4
Dependent Claim
59 words
A glass cutter as set forth in claim 1, wherein a longitudinal indentation provided in the external surface of said tube in said cutter head receives the tip of a setscrew screwed laterally into said cutter head so that the axial movement of said cutter head relative to said barrel may be limited to the length of said indentation.
Claim 5
Dependent Claim
20 words
A glass cutter as set forth in claim 1, wherein said sleeve and said barrel are integral with each other.
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) | 1984-09-07 | 1985-03-09 | 1985-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-07 | 1989-03-09 | 1989-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-07 | 1993-03-09 | 1993-09-08 | $7700.00 | Window Closed / Lapsed |