US3856498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glassware coating apparatus and process therefor
Assignee: DIAMOND THATCHER Inc
•
Filing: 1972-03-07
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Granted: 1974-12-24
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Expires: 1992-03-07
Abstract
Abstract Glassware coating process and apparatus including an oven and fluidized bed arrangement that preheats, dip coats and cures a thermoplastic shatterproof polymer on ware in a continuous fashion. The apparatus, among other things, includes a gripper device adapted to seize a plurality of ware simultaneously and transfer same through the coating stage. Similarly, there are disclosed techniques and apparatus for pre-heating, curing, applying variable coating thicknesses and transferring and lubricating coated ware.
Inventors
- 👤 E Campagna
- 👤 D Hardy
- 👤 J Letawa
- 👤 T Palmer
- 👤 B Daugherty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:58
CPC Classifications
B; B05; B05C; B05C19/00; B05C19/02; B05D; B05D1/00; B05D1/18; B05D1/22; B05D1/24; B05D3/00; B05D3/02; B05D3/0218; B05D3/0254; B05D3/08; B65; B65G; B65G47/00; B65G47/22; B65G47/26; B65G47/28; B65G2201/00; B65G2201/02; B65G2201/0235; B65G2201/0244; B65G2207/00; B65G2207/14; Y; Y10; Y10S; Y10S118/00; Y10S118/05
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
A PROCESS FOR COATING A GLAS CONTAINER COMPRISING: PREHEATING THE CONTAINER TO A TEMPERATURE OF FROM ABOUT 400*F TO ABOUT 600*F; DIPPING THE PREHEATED CONTAINER INTO A FLUIDIZED BED COMPRISING A THERMOPLASTIC POLYMER HAVING A PARTILCLE SIZE OF FROM ABOUT 75 TO ABOUT 20 MESH AND A MELT INDEX OF FROM ABOUT 1 TO ABOUT 3 FOR FROM ABOUT 2 TO 10 SECONDS; HEATING SAID DIPPED CONTAINER AT A TEMPERATURE OF FROM ABOUT 400*F TO ABOUT 550* FOR FROM ABOUT 2 TO ABOUT 8 MINUTES TO FORM A CONTIGUOUS THERMOPLASTIC SURFACE ON SAID GLASS CONTAINER; AND COOLING SAID COATING AND APPLYING THERETO A COMPOUND SELECTED FROM THE GROUP CONSISTING OF WAX, CARNAUBA WAX, SILICONE, AND SILCONE-WAX COMBINATIONS.
Claim 2
Dependent Claim
117 words
A PROCESS FOR COATING A GLAS CONTAINER COMPRISING: PREHEATING THE CONTAINER TO A TEMPERATURE OF FROM ABOUT 400*F TO ABOUT 600*F; DIPPING THE PREHEATED CONTAINER INTO A FLUIDIZED BED COMPRISING A THERMOPLASTIC POLYMER HAVING A PARTILCLE SIZE OF FROM ABOUT 75 TO ABOUT 20 MESH AND A MELT INDEX OF FROM ABOUT 1 TO ABOUT 3 FOR FROM ABOUT 2 TO 10 SECONDS; HEATING SAID DIPPED CONTAINER AT A TEMPERATURE OF FROM ABOUT 400*F TO ABOUT 550* FOR FROM ABOUT 2 TO ABOUT 8 MINUTES TO FORM A CONTIGUOUS THERMOPLASTIC SURFACE ON SAID GLASS CONTAINER; AND COOLING SAID COATING AND APPLYING THERETO A COMPOUND SELECTED FROM THE GROUP CONSISTING OF WAX, CARNAUBA WAX, SILICONE, AND SILCONE-WAX COMBINATIONS.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein said container is hot water washed prior to being heated.
Claim 4
Dependent Claim
26 words
A process according to claim 1 wherein subsequent to the application of said compound, the container is flame treated to achieve an adhesive accepting coating surface.
Claim 5
Dependent Claim
87 words
A process for varying the coating thickness on a glass substrait and comprising: preheating the substrait to at least the melting temperature of the coating material; immersing said substrait in a fluidized bed of particulate coating material; creating within said bed an area of lower particulate material density adjacent to at least a portion of said substrait so that less particulate material deposits upon such adjacent substrait portion, and removing said substrait from the fluidized bed subsequent to accumulating the desired amount of particulate material deposit thereon.
Claim 6
Dependent Claim
87 words
A process for varying the coating thickness on a glass substrait and comprising: preheating the substrait to at least the melting temperature of the coating material; immersing said substrait in a fluidized bed of particulate coating material; creating within said bed an area of lower particulate material density adjacent to at least a portion of said substrait so that less particulate material deposits upon such adjacent substrait portion, and removing said substrait from the fluidized bed subsequent to accumulating the desired amount of particulate material deposit thereon.
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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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |