Patent US3841109A successfully refreshed from Google Patents.
US3841109A
Expired / Lapsed
US
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Chiller apparatus
Assignee: Cardox Corp
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Filing: 1973-02-09
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Granted: 1974-10-15
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Expires: 1993-02-09
Abstract
Abstract An apparatus for chilling or freezing with a cold gas is provided. Internal contours conduct the cold gases effectively against the product to be frozen. Movable sections having molded reinforced plastic surfaces strengthened by enclosed tubular supports provide effective isolation of the freezing chamber while enabling substantially complete access to the interior of the tunnel for cleaning and maintenance.
Inventors
- 👤 L Cann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:02
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/10; F25D3/11
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
112 words
An apparatus for fast freezing with a cold gas comprising: a longitudinal housing having passages at the ends thereof, the interior of said housing having continuous concave side walls a top panel, and a bottom channel joining said side walls; conveyor means for moving products to be frozen through said housing interior via said passages; means for supplying a cold gas into said housing interior; and means for directing the cold gas upon the products and toward saiD bottom channel, said last mentioned means dividing the gas into substantially two currents, each current moving upwardly along a side wall toward said top panel for repeated application to the products to freeze same.
Claim 2
Independent Claim
112 words
An apparatus for fast freezing with a cold gas comprising: a longitudinal housing having passages at the ends thereof, the interior of said housing having continuous concave side walls a top panel, and a bottom channel joining said side walls; conveyor means for moving products to be frozen through said housing interior via said passages; means for supplying a cold gas into said housing interior; and means for directing the cold gas upon the products and toward saiD bottom channel, said last mentioned means dividing the gas into substantially two currents, each current moving upwardly along a side wall toward said top panel for repeated application to the products to freeze same.
Claim 3
Dependent Claim
33 words
The apparatus of claim 1 in which each side wall is substantially semicircular in configuration and wherein at least one of said side walls is hinged to said housing to form a door.
Claim 4
Dependent Claim
48 words
The apparatus of claim 2 in which said top panel and said bottom channel have a convex configuration and extend toward each other and in which said one side wall comprises a pair of doors hinged to said housing at said top panel and said bottom channel respectively.
Claim 5
Dependent Claim
19 words
The apparatus of claim 3 further comprising door seals consisting of strips of polyester resin about 0.014 inches thick.
Claim 6
Dependent Claim
40 words
The apparatus of claim 4 wherein said gas directing means is a fan, and having a fan shaft extending through said top panel, and a truncated conical shroud around said shaft and joined to said panel at the larger end.
Claim 7
Dependent Claim
35 words
The apparatus of claim 5 wherein said side walls, top panel, bottom channel, and ends are fiber reinforced resin shells 0.075 inches to 0.090 inches thick and are filled with layers of pre-cast cellular insulation.
Claim 8
Dependent Claim
18 words
The apparatus of claim 6 further comprising structural support members for said housing located remote from said interior.
Claim 9
Dependent Claim
49 words
The apparatus of claim 1 wherein said gas directing means is a plurality of fans disposed in spaced relation along the length of the housing and means to adjust the velocity of the cold gas from one fan relative to the velocity of the gas from an adjacent fan.
Claim 10
Dependent Claim
20 words
The apparatus of claim 8 wherein the velocity adjusting means includes means to vary the rotational speed of the fans.
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |