US3738249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hold down mechanism for printing plate processor
Assignee: Azoplate Corp
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Filing: 1971-10-21
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Granted: 1973-06-12
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Expires: 1991-10-21
Abstract
Abstract A hold-down mechanism for a printing plate processor divided into a lower fixed section and an upper pivotal section along a plane coincident with the path of travel of the plate therethrough, latch means pivotally mounted on the lower section, hydraulic cylinder means operatively connected to the latch means for pivoting the latch means into and out of locking engagement with the upper section, and pressurized fluid supply means for supplying pressurized processing fluid to the hydraulic cylinder means.
Inventors
- 👤 B Schichlein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:32
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/26; G03F7/30; G03F7/3042
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
In a printing plate processor having a lower fixed section and an upper pivotal section, divided along a plane coincident with the path of travel of a printing plate therethrough, and a processing fluid source; the improvement, comprising, latch means mounted on one of said sections for releasably holding said upper section in a closed position against said lower section; hydraulic cylinder means, operatively connected to said latch means for moving said latch means into and out of holding engagement with that one of said sections which does not carry said latch means; and pressurized fluid supply means for supplying pressurized processing fluid from said processing fluid source to said hydraulic cylinder means.
Claim 2
Dependent Claim
113 words
In a printing plate processor having a lower fixed section and an upper pivotal section, divided along a plane coincident with the path of travel of a printing plate therethrough, and a processing fluid source; the improvement, comprising, latch means mounted on one of said sections for releasably holding said upper section in a closed position against said lower section; hydraulic cylinder means, operatively connected to said latch means for moving said latch means into and out of holding engagement with that one of said sections which does not carry said latch means; and pressurized fluid supply means for supplying pressurized processing fluid from said processing fluid source to said hydraulic cylinder means.
Claim 3
Dependent Claim
56 words
In a printing plate processor in accordance with claim 1 wherein the latch means comprises a latching arm pivotally mounted on the lower section of the processor and having a notch formed adjacent its upper end and a latching stud mounted on the upper section of the processor for engaging said notch of said latching arm.
Claim 4
Dependent Claim
40 words
In a printing plate processor in accordance with claim 2 wherein the hydraulic cylinder means is pivotally mounted on the lower section of the processor and a rod of said hydraulic cylinder means is pivotally connected to the latching arm.
Claim 5
Dependent Claim
19 words
In a printing plate processor in accordance with claim 1 wherein the processing fluid is printing plate developer fluid.
Claim 6
Dependent Claim
32 words
In a printing plate processor in accordance with claim 1 wherein the pressurized fluid supply means is a pump for supplying processing fluid to both the processor and the hydraulic cylinder means.
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) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |