Patent US3768934A successfully refreshed from Google Patents.
US3768934A
Expired / Lapsed
US
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Apparatus for continuously conveying semisolid material by the action of circulating squeeze rollers on a flexible conduit for the material
Assignee: TUKIEM TRUST
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Filing: 1972-03-14
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Granted: 1973-10-30
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Expires: 1992-03-14
Abstract
Abstract An elastic flexible conveying tube has a length portion provided on the outside with ribs. Revolvable squeeze rollers are movable along said length portion in engagement therewith and have teeth adapted to mesh with said ribs.
Inventors
- 👤 O Magerle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:17
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/0009; F04B43/0054; F04B43/0072; F04B43/12; F04B43/1253; Y; Y10; Y10S; Y10S417/00; Y10S417/90
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
55 words
Apparatus for continuously conveying semisolid material, which comprises an elastic flexible conveying tube having a length portion provided on the outside with ribs, support means engaging said ribs to prevent slippage of said tube, and revolvable squeeze rollers movable along said length portion in engagement therewith and having teeth adapted to mesh with said ribs.
Claim 2
Dependent Claim
55 words
Apparatus for continuously conveying semisolid material, which comprises an elastic flexible conveying tube having a length portion provided on the outside with ribs, support means engaging said ribs to prevent slippage of said tube, and revolvable squeeze rollers movable along said length portion in engagement therewith and having teeth adapted to mesh with said ribs.
Claim 3
Dependent Claim
13 words
Apparatus as set forth in claim 1, which is adapted to convey mortar.
Claim 4
Dependent Claim
20 words
Apparatus as set forth in claim 1, in which said ribs extend transversely to the longitudinal direction of said tube.
Claim 5
Dependent Claim
38 words
Apparatus as set forth in claim 1, in which said tube has an internal cross-section which tapers in a predetermined longitudinal direction and said squeeze rollers are revolvable to move along said length portion in said predetermined direction.
Claim 6
Dependent Claim
18 words
Apparatus as set forth in claim 1, in which said ribs extend around the periphery of said tube.
Claim 7
Dependent Claim
20 words
Apparatus as set forth in claim 1, in which said tube is provided with longitudinal ribs outside said length portion.
Claim 8
Dependent Claim
41 words
Apparatus as set forth in claim 1, in which said squeeze rollers are provided only on one side of said tube and said support means comprising a bed of elastic material on the side of said tube opposite said squeeze rollers.
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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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |