Patent US3653242A successfully refreshed from Google Patents.
US3653242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating a continuous body under pressure
Assignee: Matix Corp
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Filing: 1969-06-09
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Granted: 1972-04-04
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Expires: 1989-06-09
Abstract
Abstract A method and apparatus for developing the latent image on a continuous flexible diazo web by subjecting the web to a heated pressurized atmosphere of ammonia in a sealed chamber.
Inventors
- 👤 Nicholas P Schleich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:45
CPC Classifications
G; G03; G03D; G03D7/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
73 words
a spaced return gas port leading from the developing chamber to supply chamber to allow passage of the reactive gas from said supply chamber to the developing chamber and return; d. means to heat said heat radiating panel; e. means to cause flow of the reactive gas from the supply chamber to the developing chamber and about the advancing web; f. a moisture reservoir to provide moisture vapor formation in said developing chamber.
Claim 2
Dependent Claim
38 words
The apparatus of claim 1 wherein the means to advance the web through the developing chamber are rollers secured to the heat radiating panel, and the panel is juxtaposed and parallel to the travel of the advancing web.
Claim 3
Dependent Claim
62 words
The apparatus of claim 1 wherein the pressure limiting capsule is comprised of at least one cellular pressure isolation zone, said cellular zone comprised of spaced sealed thin flexible resilient diaphrams, each diaphram having at least one slit of sufficient length to allow passage of the web therethrough, and the slit of each diaphram aligned with the slit of the adjacent diaphram.
Claim 4
Dependent Claim
14 words
The apparatus of claim 3 wherein the diaphram is composed of natural gum rubber.
Claim 5
Dependent Claim
50 words
The apparatus of claim 3 wherein the diaphram is comprised of natural gum rubber, the slit in the diaphram is of a length at least equal to the width of the web, and said capsule is comprised of at least two pressure isolation cells formed from at least three diaphrams.
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) | 1975-04-04 | 1975-10-04 | 1976-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-04 | 1979-10-04 | 1980-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-04 | 1983-10-04 | 1984-04-04 | $7700.00 | Window Closed / Lapsed |