Patent US4580900A successfully refreshed from Google Patents.
Patent US3915291A successfully refreshed from Google Patents.
US3915291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for moving elongated objects
Assignee: KM Kabelmetal AG
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Filing: 1973-07-16
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Granted: 1975-10-28
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Expires: 1993-07-16
Abstract
Abstract Delicate elongated objects such as thin-walled tubing are moved, i.e., withdrawn from processing equipment by means of coneyor belts frictionally engaging such an object whereby additional low pressure means suck the objects against the belts. These belts have perforations and low pressure is applied to the back of the belts for suction through these perforations, but they are covered outside of the back belt suction area. The belts are provided with soft, profiled ridges, flanking the perforations to provide for a groove along which the object is sucked into engagement with the ridges.
Inventors
- 👤 Arnold Vogts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:48
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/0003; B; B29; B29C; B29C31/00; B65; B65G; B65G37/00; B65H; B65H51/00; B65H51/14; B29L; B29L2023/00; B29L2023/22; B29L2023/225; B65G2812/00; B65G2812/01; B65G2812/016; B65G2812/018
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
138 words
In an apparatus for withdrawing and pulling elongated, thin wall continuous tubing with foam interior and being sensitive to localized pressure, out of a production line, comprising two diagonally opposed endless conveyor belts frictionally engaging the tubing to be moved from opposite sides, the belts each having a plurality of perforations for applying suction to the tubing from opposite sides and including a pulling load bearing portion and a soft-flexible portion each soft-flexible portion having a round concave surface for engagement with the tubing upon application of suction; and means including suction pipes for providing suction pressure respectively to the rear of the belts and to a portion of the perforations to be effected through these perforations for sucking the tubing against the soft-flexible portion of the belt, so that the tubing is being withdrawn in uninterrupted sequence.
Claim 2
Dependent Claim
138 words
In an apparatus for withdrawing and pulling elongated, thin wall continuous tubing with foam interior and being sensitive to localized pressure, out of a production line, comprising two diagonally opposed endless conveyor belts frictionally engaging the tubing to be moved from opposite sides, the belts each having a plurality of perforations for applying suction to the tubing from opposite sides and including a pulling load bearing portion and a soft-flexible portion each soft-flexible portion having a round concave surface for engagement with the tubing upon application of suction; and means including suction pipes for providing suction pressure respectively to the rear of the belts and to a portion of the perforations to be effected through these perforations for sucking the tubing against the soft-flexible portion of the belt, so that the tubing is being withdrawn in uninterrupted sequence.
Claim 3
Dependent Claim
28 words
In an apparatus as in claim 1, the soft-flexible portions of the belt each having a groove, the respective perforations being arranged in the bottom of the groove.
Claim 4
Dependent Claim
28 words
In an apparatus as in claim 2, and including sealing belts in the rear of the belt to seal perforations not facing the suction pipe in each instance.
Claim 5
Dependent Claim
29 words
In an apparatus as in claim 2, the belt having branch grooves communicating with said groove for increase the area effective for suction of the object against the belt.
Claim 6
Dependent Claim
24 words
In an apparatus as in claim 2, and including a cover on the groove made from material and construction for being permeable for gas.
Claim 7
Dependent Claim
30 words
In an apparatus as in claim 1, wherein the area of each belt directly affected by the suction pipe is smaller than the belt area in engagement with the tubing.
Claim 8
Dependent Claim
47 words
In an apparatus as in claim 1, wherein the effect coeffcient of friction between the suction pipe and the load bearing portion of each belt is considerably lower than the effective coefficient of friction between the soft-flexible portion of each belt and the tubing to be moved.
Claim 9
Dependent Claim
23 words
In an apparatus as in claim 1, the suction pipe having a mouth longitudinally flared in the direction of movement of the belt.
Claim 10
Dependent Claim
48 words
In an apparatus as in claim 1, wherein the perforations are in the pulling load bearing belt portion, the soft-flexible portion being provided by two ridges each with concave contour and a gap between the ridges along the perforations, the concave contours for engagement with the tube wall.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |