US3556004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device on rotary printing machines
Assignee: Individual
•
Filing: 1968-05-23
•
Granted: 1971-01-19
•
Expires: 1988-05-23
Abstract
Abstract A device for a screen printing machine for exchangeably receiving and longitudinally stretching a rotary screen having end pieces. Rotary heads are arranged on the frame of the machine on both sides for connection to the end pieces. One of the rotary heads is adjustable in the longitudinal direction of the screen. Connecting means for the endpieces and rotary heads are provided essentially perpendicular to the axis of the screen for releasably coupling the end pieces and rotary heads. Such connecting means of the endpieces extend radially and the cooperating connecting means of the rotary heads also extend radially so that, when mounting the rotary screen on the rotary heads transversely to the screen axis, the connecting means are movable in axial direction for engaging over the cooperating connecting means. Means are provided for force-locking the connection by axial displacement of one of said rotary heads.
Inventors
- 👤 Mathias Mitter
- 👤 Karl Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:13
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/14; B41F15/34; B41F15/38
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
161 words
A device in combination with screen printing machines for exchangeably receiving and longitudinally stretching a rotary screen having endpieces comprising a frame, rotary heads arranged on said frame on both sides for connection to said endpieces, one of said rotary heads being adjustable in the longitudinal direction of said screen, connecting means for said endpieces and rotary heads essentially perpendicular to the axis of said screen for releasably coupling said endpieces and said rotary heads, said connecting means of said endpieces extending radially and said cooperating connecting means of said rotary heads extending radially, said connecting means on said rotary heads being spaced so that, when mounting said rotary screen on said rotary heads transversely to the screen axis, said connecting means on said rotary heads are movable in axial direction for engaging over said cooperating connecting means and means for force-locking the connection means by axial displacement of one of said rotary heads in a direction away from the other.
Claim 2
Independent Claim
161 words
A device in combination with screen printing machines for exchangeably receiving and longitudinally stretching a rotary screen having endpieces comprising a frame, rotary heads arranged on said frame on both sides for connection to said endpieces, one of said rotary heads being adjustable in the longitudinal direction of said screen, connecting means for said endpieces and rotary heads essentially perpendicular to the axis of said screen for releasably coupling said endpieces and said rotary heads, said connecting means of said endpieces extending radially and said cooperating connecting means of said rotary heads extending radially, said connecting means on said rotary heads being spaced so that, when mounting said rotary screen on said rotary heads transversely to the screen axis, said connecting means on said rotary heads are movable in axial direction for engaging over said cooperating connecting means and means for force-locking the connection means by axial displacement of one of said rotary heads in a direction away from the other.
Claim 3
Independent Claim
32 words
A device according to claim l, wherein corresponding form-closed faces are provided for the nonslip coupling of said endpieces and said rotary heads on said screen endpieces and on said rotary heads.
Claim 4
Dependent Claim
50 words
A device according to claim 2, wherein a projection is joined to said connecting means of said rotary heads and axis-parallel driving faces are provided on said projection, the inner edge of said spaced connecting means of said screen endpieces extending correspondingly to the driving faces on said rotary heads.
Claim 5
Dependent Claim
47 words
A device according to claim 1, wherein a projection is joined to said connecting means of said endpieces, axis-parallel driving faces being provided on said projection, the inner edge of said spaced connecting means of said rotary heads extending correspondingly to the driving faces on said endpieces.
Claim 6
Dependent Claim
25 words
A device according to claim 3, wherein the inner edges of said spaced connecting means of said endpieces of a rotary screen are in alignment.
Claim 7
Dependent Claim
17 words
A device according to claim 5, wherein the driving faces of said endpieces are precisely in alignment.
Claim 8
Dependent Claim
20 words
A device according to claim 1, wherein corresponding centering elements are provided on said endpieces and on said rotary heads.
Claim 9
Dependent Claim
19 words
A device according to claim 7, wherein corresponding ring nuts and ring projections are provided on said connecting means.
Claim 10
Dependent Claim
48 words
A device according to claim 7, wherein said connecting means of said rotary heads are provided with a recess concentric to the screen axis on the side away from the rotary screen, the diameter of said recess being equal to the diameter of the circular disc-shaped connecting means.
Claim 11
Dependent Claim
27 words
A device according to claim 1, wherein said connecting means of said rotary heads are non rotatably and resiliently mounted in axial direction on said rotary heads.
Claim 12
Dependent Claim
23 words
A device according to claim 10, wherein said resilient mounting comprises screws and cup springs are provided below the heads of said screws.
Claim 13
Dependent Claim
17 words
A device according to claim 10, wherein a resiliently deformable ring is provided between said connecting means.
Claim 14
Dependent Claim
21 words
A device according to claim 1, wherein a ring groove open towards the screen axis is provided in an end piece.
Claim 15
Dependent Claim
26 words
A device according to claim 13, wherein said ring groove is formed by a pair of ring ribs perpendicular to the axis of said end piece.
Claim 16
Dependent Claim
40 words
A device according to claim 1, wherein said screen end pieces have a shoulder extending in the direction of the screen axis and a ring edge projects inside the screen from the zone at the inner edge of said shoulder.
Claim 17
Dependent Claim
60 words
A device according to claim 1, wherein a bearing body of one of said rotary heads is connected with the piston of a stretching cylinder, said piston being radially moved outwardly upon the admission of a pressure medium in longitudinal direction of the screen and the bearing body of the other rotary head has a device adjustable in both directions.
Claim 18
Dependent Claim
24 words
A device according to claim 16, wherein said adjusting device adjustable in both directions is provided with an adjusting screw operated by a handwheel.
Claim 19
Dependent Claim
48 words
A device according to claim 1, wherein the stretched rotary screen is driven on both sides through a driving gear provided in each rotary head, said driving gear being in mesh with a gear adjustably mounted on the driving shaft projecting across the machine parallel to said screen.
Claim 20
Dependent Claim
36 words
A device as set forth in claim 1, wherein said connecting means of said endpieces extends radially from inside the machine outwardly and said cooperating connecting means of said rotary heads extends radially from outside inwardly.
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |