US3808923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cutting continuously advancing tubes
Assignee: Chausson Usines SA
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Filing: 1971-10-27
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Granted: 1974-05-07
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Expires: 1991-10-27
Abstract
Abstract The apparatus comprises a shearing device including a single plate with a substantially rectangular opening surrounded by a sharpened edge, said plate being positioned perpendicularly to the longitudinal axis of a continuously moving tube to be cut. The tube, which may have a substantially rectangular shape, passes through the opening which is angularly disposed relative to the tube. Advancing mechanism moves the plate with and at the same speed as that of the tube and means subject the plate to reciprocation transverse the axis of the tube, thereby severing the tube by the sharpened edge surrounding the rectangular opening.
Inventors
- 👤 A Plegat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:57
CPC Classifications
B; B23; B23D; B23D25/00; B23D25/02; B23D25/04; Y; Y10; Y10T; Y10T83/00; Y10T83/404; Y10T83/465; Y10T83/4757; Y10T83/476; Y10T83/4763; Y10T83/869; Y10T83/887
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
157 words
Apparatus for shearing selected lengths from a continuously moving tube having a substantially rectangular cross-section, comprising means for guiding a tube axially along a path as the tube is moved continuously, shearing means including a plate disposed perpendicularly across said tube path and having a substantially rectangular opening surrounding said path for passage of a tube therethrough, said opening being angularly disposed to the cross-section of the tube and at least the longer sides thereof being constituted by sharpened edges, means for moving said shearing means along said tube path at the same linear speed as the tube, and means for reciprocating said plate transversely of said tube path to cause the sharpened edges of said opening to sever the tube, said plate being slidably mounted on a support which is transversely movable in relation to said tube path by means of a slidable member having cam slots cooperative with cam pins respectively inserted through said slots.
Claim 2
Dependent Claim
157 words
Apparatus for shearing selected lengths from a continuously moving tube having a substantially rectangular cross-section, comprising means for guiding a tube axially along a path as the tube is moved continuously, shearing means including a plate disposed perpendicularly across said tube path and having a substantially rectangular opening surrounding said path for passage of a tube therethrough, said opening being angularly disposed to the cross-section of the tube and at least the longer sides thereof being constituted by sharpened edges, means for moving said shearing means along said tube path at the same linear speed as the tube, and means for reciprocating said plate transversely of said tube path to cause the sharpened edges of said opening to sever the tube, said plate being slidably mounted on a support which is transversely movable in relation to said tube path by means of a slidable member having cam slots cooperative with cam pins respectively inserted through said slots.
Claim 3
Dependent Claim
32 words
Apparatus as set forth in claim 1, comprising a carriage supporting said shearing means and guide means and which is moved in along said tube path at same speed as the tube.
Claim 4
Dependent Claim
33 words
Apparatus as set forth in claim 2, comprising gripping mechanism on said carriage and controlled by said slidable member to grip the tube to drive said carriage at same speed as the tube.
Claim 5
Dependent Claim
58 words
Apparatus as set forth in claim 3, wherein a jack is provided for controlling the slidable member and the mechanism, said jack being supported by the mobile carriage, the cam slots of the slidable member having a dead area for operation of said shearing means, said dead area corresponding to operation of the gripping mechanism through the jack.
Claim 6
Dependent Claim
39 words
Apparatus as set forth in claim 4, comprising an additional jack to help advance said carriage when said carriage is driven by the tube and to return said carriage to start position after shearing off a length of tube.
Claim 7
Dependent Claim
63 words
Apparatus as set forth in claim 4, wherein a resilient component is placed between the jack supported by the carriage and a holder controlling the grippiNg mechanism, whereby said mechanism is actuated to grip the tube at start of a jack stroke, motion of said jack being then compensated by said resilient component during motion of the shearing means controlled by the same.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |