US4155305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bending-resistant gripper carriage for use in offset printing machines, and process for manufacture thereof
Assignee: MAN AG
•
Filing: 1977-02-18
•
Granted: 1979-05-22
•
Expires: 1997-02-18
Abstract
Abstract A bending-resistant gripper carriage structure is constructed in a fiber sandwich construction of the gripper carriage support. At least one layer of fibers is provided which may be in a shell-type mode with two layers of fibers each having different directions of elongation, one layer having fibers extending in the longitudinal direction of the gripper carriage support, and the other layer having fibers extending crosswise to the longitudinal direction. Several manufacturing techniques can be utilized such as fiber winding and/or lamination of fiber strips or tubes.
Inventors
- 👤 Herbert Heissler
- 👤 Horst Wurtinger
- 👤 Eberhard Willeitner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:27
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B41; B41F; B41F21/00; B41F21/04; B32B5/02; B32B5/12; B65; B65H; B65H29/00; B65H29/02; B65H29/04; B65H29/042; B32B2262/00; B32B2262/10; B32B2262/106; B32B2433/00; B32B2433/02; B65H2601/00; B65H2601/20; B65H2601/22; B65H2601/221; B65H2601/24
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
78 words
A bending-resistant gripper carriage arrangement for offset printing machines which comprises a gripper bar of bonded fiber construction having a continuous, smooth, curved upper outer sheet receiving surface, a gripper shaft supported by said gripper bar and gripping brackets carried by said gripper shaft for movement between sheet gripping and sheet releasing positions, said gripping brackets gripping a sheet between said brackets and said upper outer sheet receiving surface of the gripper bar in said sheet gripping position.
Claim 2
Dependent Claim
78 words
A bending-resistant gripper carriage arrangement for offset printing machines which comprises a gripper bar of bonded fiber construction having a continuous, smooth, curved upper outer sheet receiving surface, a gripper shaft supported by said gripper bar and gripping brackets carried by said gripper shaft for movement between sheet gripping and sheet releasing positions, said gripping brackets gripping a sheet between said brackets and said upper outer sheet receiving surface of the gripper bar in said sheet gripping position.
Claim 3
Dependent Claim
32 words
Gripper carriage arrangement according to claim 1, wherein said fiber construction comprises a layer of fibers, all of which extend parallel to the longitudinal axis of the gripper bar and substantially thereacross.
Claim 4
Dependent Claim
33 words
Gripper carriage arrangement according to claim 1, wherein the bonded fiber construction of the gripper bar is made of at least one layer formed of fibers extending in at least two fiber directions.
Claim 5
Dependent Claim
16 words
Gripper carriage arrangement according to claim 3, wherein said at least one layer encloses a core.
Claim 6
Dependent Claim
16 words
Gripper carriage arrangement according to claim 4, wherein the core is made of a synthetic resin.
Claim 7
Dependent Claim
14 words
Gripper carriage arrangement according to claim 4, wherein the core is made of metal.
Claim 8
Dependent Claim
32 words
Gripper carriage arrangement according to claim 4, comprising fixing element means for supporting said gripper bar components which are incorporated into the core and fittings which are secured to the gripper bar.
Claim 9
Dependent Claim
23 words
Gripper carriage arrangement according to claim 7, wherein the fixing element means are constituted by inserts to which the gripper bar is attached.
Claim 10
Dependent Claim
17 words
Gripper carriage arrangement according to claim 7, wherein the fixing element means are constituted by screwthreaded plates.
Claim 11
Dependent Claim
26 words
Gripper carriage arrangement according to claim 7, wherein the fittings are constituted by an impact strip disposed on said sheet receiving surface of the gripper bar.
Claim 12
Dependent Claim
40 words
Gripper carriage arrangement according to claim 7, wherein the fixing element is constituted by bearing block means which are attached along an outer longitudinal side of the gripper bar to support said gripper shaft for rotary movement about its axis.
Claim 13
Dependent Claim
22 words
Gripper carriage arrangement according to claim 3, wherein the layer contains fiber extending parallel to the longitudinal axis of the gripper bar.
Claim 14
Dependent Claim
14 words
Gripper carriage arrangement according to claim 3, wherein the layer has crosswise fiber plies.
Claim 15
Dependent Claim
34 words
Gripper carriage arrangement according to claim 13, wherein the directions of the fibers in the layer extend within an angular range of ±30° to ±60° relative to the longitudinal axis of the gripper bar.
Claim 16
Dependent Claim
18 words
Gripper carriage arrangement according to claim 13, wherein the layer consists of carbon fibers impregnated with synthetic resin.
Claim 17
Dependent Claim
47 words
Gripper carriage arrangement according to claim 1, wherein at least one tie rod means is incorporated into the gripper bar, the gripper bar being stressed by the tie rod means to counteract a bending load acting on the gripper bar when the gripper bar is in use.
Claim 18
Dependent Claim
18 words
Gripper carriage arrangement according to claim 16, wherein the tie rod means is constituted by a metal wire.
Claim 19
Dependent Claim
18 words
Gripper carriage arrangement according to claim 16, wherein the tie rod means is constituted by a metal cable.
Claim 20
Dependent Claim
24 words
Gripper carriage arrangement according to claim 1, wherein end plate means are respectively arranged in opposition to the end faces of the gripper bar.
Claim 21
Dependent Claim
76 words
A process for manufacturing bending-resistant gripper bars for gripper carriages in offset printing machines, comprising the steps of forming a core in the shape of a bar, applying a first layer of fibers onto the core and applying a second layer of fibers onto the first layer of fibers wherein the fibers of the first layer extend parallel to the longitudinal axis of the core and wherein the fibers of the second layer are arranged crosswise.
Claim 22
Dependent Claim
76 words
A process for manufacturing bending-resistant gripper bars for gripper carriages in offset printing machines, comprising the steps of forming a core in the shape of a bar, applying a first layer of fibers onto the core and applying a second layer of fibers onto the first layer of fibers wherein the fibers of the first layer extend parallel to the longitudinal axis of the core and wherein the fibers of the second layer are arranged crosswise.
Claim 23
Dependent Claim
23 words
Process according to claim 20, wherein the first layer of fibers is applied to the core by glueing the fibers onto the core.
Claim 24
Dependent Claim
32 words
Process according to claim 20, wherein the second layer of fibers is applied to the first layer by winding the fibers of the second layer round the composite core and first layer.
Claim 25
Dependent Claim
35 words
Process according to claim 20, wherein the second layer of fibers is applied to the composite core and first layer by lamination, wherein the fibers of the second layer are in the form of strips.
Claim 26
Dependent Claim
35 words
Process according to claim 20, wherein the second layer of fibers is applied to the composite core and first layer by lamination, wherein the fibers of the second layer are in the form of hoses.
Claim 27
Dependent Claim
18 words
Process according to claim 20, wherein said core remains within the bar that is produced by that method.
Claim 28
Dependent Claim
14 words
Process according to claim 20, wherein said core is removed after the manufacturing procedure.
Claim 29
Dependent Claim
13 words
Process according to claim 20, wherein the core is made of synthetic resin.
Claim 30
Dependent Claim
12 words
Process according to claim 20, wherein the core is made of metal.
References Cited (Backward Citations)
US1436680A
Cited
CH248224A
Cited
US2622000A
Cited
US2794240A
Cited
US3139826A
Cited
US3470051A
Cited
US3429758A
Cited
US3709754A
Cited
US3652376A
Cited
DE2140442A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-21 | 1982-11-20 | 1983-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-21 | 1986-11-20 | 1987-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-21 | 1990-11-20 | 1991-05-22 | $7700.00 | Window Closed / Lapsed |