Patent US3552731A successfully refreshed from Google Patents.
US3552731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus
Assignee: Sinclair Research Inc
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Filing: 1968-07-31
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Granted: 1971-01-05
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Expires: 1988-07-31
Abstract
Abstract Apparatus for automatically cutting pipe or tubing according to a desired pattern by securing the pattern to the tubing and by rotatably mounting around the tubing a constant linear speed, positive contact drive which traces the pattern and which is connected by a transfer arm to a cutting tool.
Inventors
- 👤 Lawrence R Selkirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:03
CPC Classifications
B; B23; B23K; B23K7/00; B23K7/005; B23K7/006
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
155 words
Apparatus for cutting a tubular article in accordance with a predetermined pattern comprising a pattern member carrying the predetermined pattern and adapted for attachment to a tube for movement therewith; drive means for movement along said predetermined pattern; cutting means; said drive means and cutting means being separate from one another, and transfer means coupling said drive means and said cutting means and adapted for connection to the tube for movement relative thereto for transferring movement of said drive means along said predetermined pattern into movement of said cutting means along said tube, said transfer means including at least one transfer arm pivotally connected to each of said drive means and cutting means thereby interconnecting same, said at least one transfer arm in addition to being pivotally connected to each of said drive means and cutting means, also being pivotally carried in order to transfer longitudinal movement of said drive means to said cutting means.
Claim 2
Dependent Claim
155 words
Apparatus for cutting a tubular article in accordance with a predetermined pattern comprising a pattern member carrying the predetermined pattern and adapted for attachment to a tube for movement therewith; drive means for movement along said predetermined pattern; cutting means; said drive means and cutting means being separate from one another, and transfer means coupling said drive means and said cutting means and adapted for connection to the tube for movement relative thereto for transferring movement of said drive means along said predetermined pattern into movement of said cutting means along said tube, said transfer means including at least one transfer arm pivotally connected to each of said drive means and cutting means thereby interconnecting same, said at least one transfer arm in addition to being pivotally connected to each of said drive means and cutting means, also being pivotally carried in order to transfer longitudinal movement of said drive means to said cutting means.
Claim 3
Dependent Claim
24 words
Apparatus as claimed in claim 1 in which said pattern member comprises a tubular sleeve having the predetermined pattern on the outer surface thereof.
Claim 4
Dependent Claim
43 words
Apparatus as claimed in claim 2 in which the predetermined pattern comprises a groove in said outer surface and a plurality of pins extending from said outer surface at spaced intervals along said groove, said pins being adapted to engage said drive means.
Claim 5
Dependent Claim
50 words
Apparatus as claimed in claim 3 in which said drive means comprises a motor having an output shaft on which is mounted a pinion extending within said groove and having teeth for engagement of said pins to cause said motor to move along said groove as the output shaft rotates.
Claim 6
Dependent Claim
82 words
Apparatus as claimed in claim 1 in which said transfer means comprises a first rod connected to said drive means; a second rod connected to said cutting means; first and second annular members for rotatably encircling the tube; means interconnecting said first and second annular members; and at least one transfer arm pivotally connected to said interconnecting means and pivotally coupled to said first and second rods for transferring longitudinal movement of said first rod into longitudinal movement of said second rod.
Claim 7
Dependent Claim
24 words
Apparatus as claimed in claim 5 in which said pattern member comprises a tubular sleeve having the predetermined pattern on the outer surface thereof.
Claim 8
Dependent Claim
43 words
Apparatus as claimed in claim 6 in which the predetermined pattern comprises a groove in said outer surface and a plurality of pins extending from said outer surface at spaced intervals along said groove, said pins being adapted to engage said drive means.
Claim 9
Dependent Claim
50 words
Apparatus as claimed in claim 7 in which said drive means comprises a motor having an output shaft on which is mounted a pinion extending within said groove and having teeth for engagement of said pins to cause said motor to move along said groove as the output shaft rotates.
Claim 10
Dependent Claim
15 words
Apparatus as claimed in claim 8 in which said cutting means is an acetylene torch.
Claim 11
Dependent Claim
15 words
Apparatus as claimed in claim 1 in which said cutting means is an acetylene torch.
References Cited (Backward Citations)
US974694A
Cited
DE1083625B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |