Patent US3706406A successfully refreshed from Google Patents.
US3706406A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web transport apparatus
Assignee: Eastman Kodak Co
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Filing: 1970-01-07
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Granted: 1972-12-19
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Expires: 1990-01-07
Abstract
Abstract Apparatus for moving a web above a vacuum chamber comprising a vacuum chamber which has an opening in its upper surface and a foraminous belt movable within the chamber. A portion of the belt moves in the opening to support and move the web from the underside. A vacuum is applied to the vacuum chamber to create a sub-atmospheric pressure under the moving belt to draw the web into contact with the belt as they move together across the vacuum chamber opening.
Inventors
- 👤 Robert J Borel
- 👤 Leonard S Corey
- 👤 Thaddeus W Kucharski
- 👤 John L Stocking
- 👤 Frederick H Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:03
CPC Classifications
B; B65; B65B; B65B41/00; B65B41/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
162 words
Apparatus for moving a web along a predetermined path with means for applying a vacuum to the underside of the web comprising a vacuum chamber with an opening in the upper side thereof disposed subjacent the predetermined path of the web, an endless foraminous member disposed within said vacuum chamber and arranged to follow a designated path within the chamber with a first portion of the path traversing the opening in the upper side of the vacuum chamber in the same direction as the movement of the web thereacross and the second portion of the path wholly within the vacuum chamber, drive means for moving said foraminous member along said path, the upper surface of the foraminous member in the open upper side of the vacuum chamber arranged to mate with the lower surface of the web whereby said web is moved from one end of the vacuum chamber to the other while a vacuum is applied to the lower surface thereof.
Claim 2
Dependent Claim
162 words
Apparatus for moving a web along a predetermined path with means for applying a vacuum to the underside of the web comprising a vacuum chamber with an opening in the upper side thereof disposed subjacent the predetermined path of the web, an endless foraminous member disposed within said vacuum chamber and arranged to follow a designated path within the chamber with a first portion of the path traversing the opening in the upper side of the vacuum chamber in the same direction as the movement of the web thereacross and the second portion of the path wholly within the vacuum chamber, drive means for moving said foraminous member along said path, the upper surface of the foraminous member in the open upper side of the vacuum chamber arranged to mate with the lower surface of the web whereby said web is moved from one end of the vacuum chamber to the other while a vacuum is applied to the lower surface thereof.
Claim 3
Dependent Claim
19 words
The invention according to claim 1 wherein said foraminous member is comprised of a plurality of perforated channel members.
Claim 4
Dependent Claim
22 words
The invention according to claim 2 wherein said perforated channel members are arranged in parallel contiguous relationship transversely in said vacuum chamber.
Claim 5
Dependent Claim
35 words
The invention according to claim 2 wherein a pair of endless chains are arranged to follow a predetermined path in the vacuum chamber and to be connected to and to move said perforated channel members.
Claim 6
Dependent Claim
210 words
Apparatus for moving a web along a predetermined path with means for applying a vacuum to the underside of the web comprising a vacuum chamber with an opening in the upper side thereof disposed subjacent the predetermined path of the web, said opening having a width less than the width of said web, a pair of endless chains disposed within said vacuum chamber and arranged to follow a designated path within the chamber, a plurality of perforated channel members arranged to permit air to be drawn therethrough connected to and movable with said chains along the designated path, a first portion of the path of the chains and the plurality of perforated channel members arranged to traverse the opening in the upper side of the vacuum chamber in the same direction as the movement of the web thereacross and the second portion of the path wholly within the vacuum chamber, drive means for moving said chains along said path, the upper surface of the channel members in the open upper side of the vAcuum chamber arranged to mate with the lower surface of the web whereby said web is moved from one end of the vacuum chamber to the other while a vacuum is applied to the lower surface thereof.
Claim 7
Dependent Claim
210 words
Apparatus for moving a web along a predetermined path with means for applying a vacuum to the underside of the web comprising a vacuum chamber with an opening in the upper side thereof disposed subjacent the predetermined path of the web, said opening having a width less than the width of said web, a pair of endless chains disposed within said vacuum chamber and arranged to follow a designated path within the chamber, a plurality of perforated channel members arranged to permit air to be drawn therethrough connected to and movable with said chains along the designated path, a first portion of the path of the chains and the plurality of perforated channel members arranged to traverse the opening in the upper side of the vacuum chamber in the same direction as the movement of the web thereacross and the second portion of the path wholly within the vacuum chamber, drive means for moving said chains along said path, the upper surface of the channel members in the open upper side of the vAcuum chamber arranged to mate with the lower surface of the web whereby said web is moved from one end of the vacuum chamber to the other while a vacuum is applied to the lower surface thereof.
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |