US3656493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screen washing apparatus
Assignee: GENERAL ADVANCE CORP A MI C ORP
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Filing: 1969-09-11
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Granted: 1972-04-18
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Expires: 1989-09-11
Abstract
Abstract Screen stencil washing apparatus with an enclosure cabinet having screen loading means extending between the exterior and the interior of the cabinet, the cabinet containing a washing gun support means advanceable across the area of the screen by controlled bidirectional movement using two inter-related conveyance means, one in one dimension and the other transversely thereto, the one having a sweeping movement and the other an incremental advancement. Lighting means is arranged to allow visual inspection upon completion of the washing cycle, through access doors. The washing gun is removable from its support means for manual washing of any local areas.
Inventors
- 👤 James A Black
- 👤 Harry Russell Farwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:37
CPC Classifications
B; B41; B41F; B41F35/00; B41F35/003; B41F35/005; B41F35/001
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
215 words
Stencil screen washing apparatus comprising a housing: stencil screen conveyance means extending from the exterior of said housing through a stencil inlet and outlet opening to the interior of said housing; spray washing gun support and advancing means inside said housing, including gun support means, first traversing gun conveyance means mounting said gun support means and advanceable in a first dimension in said housing to move across a stencil screen, and second gun conveyance means mounting said first gun conveyance means and advanceable in a second dimension transverse to said first dimension, whereby said gun support means can be advanced over the area of a stencil screen, said gun support being on one side of said stencil screen conveyance means, said apparatus including illumination means on the opposite side of said stencil screen conveyance means for projecting light through said stencil screen, and an access opening with operable access doors on the same side of said screen conveyance means as said gun support to allow an operator visual inspection of a cleaned stencil to determine any unwashed areas of said screen; and means accessible through said access opening and said access doors permitting movement of said gun into position for spraying any unwashed areas of a screen without repeating the entire washing of said screen.
Claim 2
Dependent Claim
215 words
Stencil screen washing apparatus comprising a housing: stencil screen conveyance means extending from the exterior of said housing through a stencil inlet and outlet opening to the interior of said housing; spray washing gun support and advancing means inside said housing, including gun support means, first traversing gun conveyance means mounting said gun support means and advanceable in a first dimension in said housing to move across a stencil screen, and second gun conveyance means mounting said first gun conveyance means and advanceable in a second dimension transverse to said first dimension, whereby said gun support means can be advanced over the area of a stencil screen, said gun support being on one side of said stencil screen conveyance means, said apparatus including illumination means on the opposite side of said stencil screen conveyance means for projecting light through said stencil screen, and an access opening with operable access doors on the same side of said screen conveyance means as said gun support to allow an operator visual inspection of a cleaned stencil to determine any unwashed areas of said screen; and means accessible through said access opening and said access doors permitting movement of said gun into position for spraying any unwashed areas of a screen without repeating the entire washing of said screen.
Claim 3
Dependent Claim
58 words
The apparatus in claim 1 including power motor means operably connected to one of said first gun conveyance means to cause sweeping traversing movement of said gun support means in one dimension, and incremental advance control means operably associated with said second gun conveyance means to cause incremental advance of said gun support means in the other dimension.
Claim 4
Dependent Claim
37 words
The stencil screen washing apparatus in claim 1 including a washing gun having a removable slip fit connection with said gun support means, to enable said gun to be manually removed for localized cleaning of a stencil.
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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |