US3817208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating apparatus for sheet material
Assignee: Feldmuehle Anlagen und Produktion GmbH
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Filing: 1972-10-10
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Granted: 1974-06-18
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Expires: 1992-10-10
Abstract
Abstract The doctor blade assembly of a coating apparatus has a metal rod rotatable about its longitudinal axis and partly received in the operating portion of an elongated, unitary holder body of elastomeric material which also has a plate-shaped mounting portion, a part of the mounting portion remote from the operating portion being fastened to a fixed support for flexing of another part of the mounting portion for resilient movement of the operating portion and of the rod received therein toward and away from a backing roll for the sheet material to be coated.
Inventors
- 👤 W Barnscheidt
- 👤 H Sollinger
- 👤 F Krautzberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:01
CPC Classifications
D; D21; D21H; D21H25/00; D21H25/08; D21H25/12; B; B05; B05C; B05C11/00; B05C11/02; B05C11/023; B05C11/025; D21H5/00; D21H5/0005; D21H5/006; D21H5/0062; D21H5/0067
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
197 words
In a coating apparatus for paper and like sheet material including a rotatable backing roll having an axis of rotation and a doctor blade assembly axially coextensive with the roll, the assembly including an elongated rod member and a holder arrangement supporting the rod member for rotation about an axis extending in the direction of elongation of said rod member and substantially parallel to said axis of rotation while sheet material backed by said roll is engaged by said rod member, the holder arrangement including a body essentially consisting of elastomeric material having an operating portion defining therein a receptacle elongated in the common direction of said axes and open toward said roll, said receptacle partly receiving said rod member, the improvement in said holder arrangement which comprises: a. a normally stationary support, 1. said body of elastomeric material having an integral mounting portion extending in a direction away from said operating portion; b. fastening means fastening a part of said mounting portion remote from said receptacle to said support for movement of said receptacle toward and away from said roll when another part of said mounting portion intermediate said remote part and said receptacle is flexed.
Claim 2
Dependent Claim
197 words
In a coating apparatus for paper and like sheet material including a rotatable backing roll having an axis of rotation and a doctor blade assembly axially coextensive with the roll, the assembly including an elongated rod member and a holder arrangement supporting the rod member for rotation about an axis extending in the direction of elongation of said rod member and substantially parallel to said axis of rotation while sheet material backed by said roll is engaged by said rod member, the holder arrangement including a body essentially consisting of elastomeric material having an operating portion defining therein a receptacle elongated in the common direction of said axes and open toward said roll, said receptacle partly receiving said rod member, the improvement in said holder arrangement which comprises: a. a normally stationary support, 1. said body of elastomeric material having an integral mounting portion extending in a direction away from said operating portion; b. fastening means fastening a part of said mounting portion remote from said receptacle to said support for movement of said receptacle toward and away from said roll when another part of said mounting portion intermediate said remote part and said receptacle is flexed.
Claim 3
Dependent Claim
34 words
In an apparatus as set forth in claim 1, said mounting portion being substantially plate-shaped, elongated in said common direction, and extending in a plane tangential to a cylinder about said axis of rotation.
Claim 4
Dependent Claim
39 words
In an apparatus as set forth in claim 2, said support being formed with a groove elongated in said common direction, and said fastening means including a rib integral with said remote portion and conformingly received in said groove.
Claim 5
Dependent Claim
30 words
In an apparatus as set forth in claim 3, said body having an integral skirt portion projecting from said intermediate part and interposed between said rod member and said support.
Claim 6
Dependent Claim
37 words
In an apparatus as set forth in claim 3, said operating portion, said mounting portion, and said rib being coextensive with said roll in said common direction, and of uniform cross section over the entire length thereof.
Claim 7
Dependent Claim
78 words
In an apparatus as set forth in claim 2, a bracket member, said mounting portion having a face directed toward said roll and another face directed away from said roll, and securing means securing said bracket member to said support in a position in which said bracket member is superposed on said mounting portion in area contact with said other face and limits flexing of said intermediate part and the movement of said receptacle away from said roll.
Claim 8
Dependent Claim
50 words
In an apparatus as set forth in claim 6, a clamping member, said bracket member and said remote part of said mounting portion being received under clamping pressure between said clamping member and said support, said clamping member constituting an element of said fastening means and of said securing means.
Claim 9
Dependent Claim
53 words
In an apparatus as set forth in claim 6, said bracket member being elongated in said common direction, of uniform cross section over the length thereof, and formed with a longitudinal groove open toward said roll, and pressure means in said groove engaging said operating portion for urging the same toward said roll.
Claim 10
Dependent Claim
34 words
In an apparatus as set forth in claim 8, said pressure means including a pliable tube in said groove and a body of gas in said tube under a pressure higher than atmospheric pressure.
Claim 11
Dependent Claim
33 words
In an apparatus as set forth in claim 6, cooperating abutment means on said bracket member and on said operating portion for limiting movement of said receptacle toward and away from said roll.
References Cited (Backward Citations)
US3134126A
Cited
US3245377A
Cited
US3359940A
Cited
US3461837A
Cited
US3596305A
Cited
US3450098A
Cited
US3529315A
Cited
US3701335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |