US3774533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary screen printing machine with internal squeegee
Assignee: Individual
•
Filing: 1972-03-09
•
Granted: 1973-11-27
•
Expires: 1992-03-09
Abstract
Abstract A rotary screen printing machine wherein the rotary screen rises from the printing operation position at the time of termination of the printing operation and at this risen position the rotary screen is driven and rotated independently of the printing belt, whereby an undesired phenomenon that at the time of stoppage of the printing operation a printing paste or ink flows out through the screen onto the material to be printed or the printing belt and causes contamination of the material to be printed upon can be effectively prevented.
Inventors
- 👤 S Ichinose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:53
CPC Classifications
B; B41; B41F; B41F15/00; B41F15/08; B41F15/0831; B41F15/0836
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
254 words
A rotary screen printing machine comprising pulleys at opposite ends of a printing operation zone, at least one pulley being a driven pulley, a printing belt supported on and driven by said pulleys for supporting a material to be printed and transporting it through the printing operation zone, at least one rotary screen positioned above said belt in said printing operation zone, a squeegee member in the interior of said rotary screen for squeezing a printing paste or ink through the rotary screen onto the material to be printed, a first drive mechanism for driving the rotary screen at a speed synchronized with the speed of the printing belt, a bearing device on which the rotary screen is rotatably mounted, a supporting member on which said bearing device is mounted a supporting shaft on which one end of said supporting member is pivotally mounted, a lifting device to which the other end of said supporting member is attached, a screen gear on the rotary screen, an idle gear on said supporting shaft engaged with said screen gear, a screen driving gear engaged with said idle gear, a second drive mechanism independent of said first drive mechanism, and means alternatively connecting said screen driving gear with said first drive mechanism and said second drive mechanism, whereby when the printing operation is stopped, the rotary screen can be raised from the printing operation position by said lifting device and in the raised position the rotary screen can be driven and rotated independently of the printing belt.
Claim 2
Dependent Claim
254 words
A rotary screen printing machine comprising pulleys at opposite ends of a printing operation zone, at least one pulley being a driven pulley, a printing belt supported on and driven by said pulleys for supporting a material to be printed and transporting it through the printing operation zone, at least one rotary screen positioned above said belt in said printing operation zone, a squeegee member in the interior of said rotary screen for squeezing a printing paste or ink through the rotary screen onto the material to be printed, a first drive mechanism for driving the rotary screen at a speed synchronized with the speed of the printing belt, a bearing device on which the rotary screen is rotatably mounted, a supporting member on which said bearing device is mounted a supporting shaft on which one end of said supporting member is pivotally mounted, a lifting device to which the other end of said supporting member is attached, a screen gear on the rotary screen, an idle gear on said supporting shaft engaged with said screen gear, a screen driving gear engaged with said idle gear, a second drive mechanism independent of said first drive mechanism, and means alternatively connecting said screen driving gear with said first drive mechanism and said second drive mechanism, whereby when the printing operation is stopped, the rotary screen can be raised from the printing operation position by said lifting device and in the raised position the rotary screen can be driven and rotated independently of the printing belt.
Claim 3
Dependent Claim
57 words
A rotary screen printing machine as claimed in claim 1 wherein said lastmentioned means comprises a screen driving shaft, a gearing mechanism coupled between said screen driving shaft and said screen driving gear, and means at the ends of said screen driving shaft for coupling said screen driving shaft to said first and second drive means, respectively.
Claim 4
Dependent Claim
112 words
A rotary screen printing mechanism as claimed in claim 2 wherein the means for connecting the screen driving shaft to said first drive mechanism is a first clutch mechanism at one end of said screen driving shaft, and said means for connecting the screen driving shaft to the second drive mechanism is a second clutch mechanism, said first drive mechanism comprising a gearing mechanism coupled to one of said pulleys for and belt for transmitting the rotation of said pulley, and a drive shaft coupled between said gearing mechanism and said first clutch mechanism for transmitting the rotation of said drive shaft through the first clutch mechanism to said screen driving shaft.
Claim 5
Dependent Claim
84 words
A rotary screen printing machine as claimed in claim 1 in which said screen gear is on one end of said rotary screen, and said machine further comprises a further screen gear on the other end of said rotary screen, a shaft rotatably mounted on said lifting device, and first spur gear fixed on one end of said shaft and engaged with said firstmentioned screen gear, and a second spur gear on the other end of said shaft engaged with said further screen gear.
Claim 6
Dependent Claim
56 words
A rotary screen printing machine as claimed in claim 1, in which said lifting device comprises a vertical member on which said supporting member is mounted, a vertically movable lift frame on which said vertical member is mounted, and a fluid pressure actuated means coupled to said lift frame for raising and lowering said lift frame.
Claim 7
Dependent Claim
85 words
A rotary screen printing machine as claimed in claim 5 in which said squeegee member is mounted on said lift frame and positioned within said rotary screen so that when the rotary screen is in contact with the material to be printed the blade of said squeegee member is in contact with the inner surface of the rotary screen, and when the rotary screen is in the raised position, the blade of the squeegee member is spaced from the inner surface of the rotary screen.
Claim 8
Dependent Claim
39 words
A rotary screen printing machine as claimed in claim 1 in which there are a plurality of rotary screens each having an associated squeegee member, bearing device, supporting member, lifting device screen gear, idle gear and screen driving gear.
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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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |