Patent US1173319A successfully refreshed from Google Patents.
US3798765A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for cutting tubes
Assignee: Individual
•
Filing: 1972-01-24
•
Granted: 1974-03-26
•
Expires: 1992-01-24
Abstract
Abstract A device for cutting tube shaped work pieces including pivoted clamp halves for surrounding a peripheral portion of the work piece and being clamped therearound without deformation of the work piece and a cutter extending radially of said clamp halves and being slideably mounted on said clamp halves while held in said radial position.
Inventors
- 👤 A Mattsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:16
CPC Classifications
B; B23; B23D; B23D21/00; B23D21/06; B23D21/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
238 words
A device for cutting tubular work pieces and comprising in combination a clamping member for surrounding and clamping the work piece, said clamping member having two semi-cylinderical halves with cylindrical inner surfaces capable of pressing against the outer surface of the work piece in the operation position of said clamping member, said clamping member halves being pivotally interconnected at one of their corresponding edges, means for clamping said halves together at the opposite edges thereof, said halves having radially extending flange portions at one end, the front side of said flange portions having an undercut circular groove, a curved tool carrier having an extension in the circumferential direction of the work piece smaller than each of said halves of the clamping member and having a guide list portion running in said undercut groove, a radially extending tool block secured to said tool carrier, a cutter bit, means for moving said cutter bit along said tool block substantially towards the center of the work piece, each of said semi-cylindrical halves being divided into an outer piece and an insert piece which is detachably mounted in said halves for adapting the device to work with smaller diameter than the inner diameter of said outer piece,at least the upper one of said insert pieces having a guiding pin extending radially through an opening in the outer piece, and said guide pin is releaseabLy lockable at the side of said outer piece.
Claim 2
Independent Claim
238 words
A device for cutting tubular work pieces and comprising in combination a clamping member for surrounding and clamping the work piece, said clamping member having two semi-cylinderical halves with cylindrical inner surfaces capable of pressing against the outer surface of the work piece in the operation position of said clamping member, said clamping member halves being pivotally interconnected at one of their corresponding edges, means for clamping said halves together at the opposite edges thereof, said halves having radially extending flange portions at one end, the front side of said flange portions having an undercut circular groove, a curved tool carrier having an extension in the circumferential direction of the work piece smaller than each of said halves of the clamping member and having a guide list portion running in said undercut groove, a radially extending tool block secured to said tool carrier, a cutter bit, means for moving said cutter bit along said tool block substantially towards the center of the work piece, each of said semi-cylindrical halves being divided into an outer piece and an insert piece which is detachably mounted in said halves for adapting the device to work with smaller diameter than the inner diameter of said outer piece,at least the upper one of said insert pieces having a guiding pin extending radially through an opening in the outer piece, and said guide pin is releaseabLy lockable at the side of said outer piece.
Claim 3
Dependent Claim
46 words
A device as claimed in claim 1 wherein the means for locking said guide pin consists of a spring which is pressed by its spring action against an angled side of a portion of said guide pin projecting in the outer piece of said clamping half.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |