Patent US3804796A successfully refreshed from Google Patents.
US3693371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary refrigerating apparatus
Assignee: REVCO Inc
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Filing: 1971-01-25
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Granted: 1972-09-26
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Expires: 1991-01-25
Abstract
Abstract An auxiliary refrigerating apparatus for chest-type freezers and the like, for automatically spraying a coolant into the freezer. The apparatus includes an elongated tubular member having a plurality of spaced openings therein for spraying coolant within a cavity, an outlet for relieving pressure build-up within the cavity, and a pair of spaced flat portions allowing the elongated member to rest on the walls of the freezer with the door closed. Controls are provided for automatically spraying coolant into the freezer responsive to a predetermined condition.
Inventors
- 👤 Robert E Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:45
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/10; F25D3/102
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
245 words
An auxiliary refrigerating apparatus for a chest-type freezer, said freezer having a pair of side walls, front and rear walls, and a bottom joining said walls defining a cavity therebetween, a hinged door provided for closing said cavity, and seal means carried between said door and said cavity, the improvement comprising: a source of coolant, an elongated tubular member carried between said side walls extending across said cavity, said tubular member having an inlet adjacent one end carried outside said freezer for receiving said coolant and an outlet adjacent the other end carried outside said freezer for relieving pressure build-up in said freezer, said tubular member having a main body with a plurality of spaced openings therein carried in said cavity, valve means coupled between said source of coolant and said inlet of said tubular member for controlling the flow of said coolant from said source of coolant to said inlet, a temperature sensing means carried in said freezer, a controller coupled to said temperature sensing means and said valve means for opening said valve responsive to the temperature in said freezer rising above a predetermined level for supplying said coolant to said tubular member to spray said coolant into said freezer in order to reduce the temperature in said freezer, spaced relatively flat portions provided adjacent opposite ends of said elongated tubular member, and said spaced relatively flat portions being carried on opposed side walls of said refrigerating apparatus for suppoRting said tubular member.
Claim 2
Dependent Claim
245 words
An auxiliary refrigerating apparatus for a chest-type freezer, said freezer having a pair of side walls, front and rear walls, and a bottom joining said walls defining a cavity therebetween, a hinged door provided for closing said cavity, and seal means carried between said door and said cavity, the improvement comprising: a source of coolant, an elongated tubular member carried between said side walls extending across said cavity, said tubular member having an inlet adjacent one end carried outside said freezer for receiving said coolant and an outlet adjacent the other end carried outside said freezer for relieving pressure build-up in said freezer, said tubular member having a main body with a plurality of spaced openings therein carried in said cavity, valve means coupled between said source of coolant and said inlet of said tubular member for controlling the flow of said coolant from said source of coolant to said inlet, a temperature sensing means carried in said freezer, a controller coupled to said temperature sensing means and said valve means for opening said valve responsive to the temperature in said freezer rising above a predetermined level for supplying said coolant to said tubular member to spray said coolant into said freezer in order to reduce the temperature in said freezer, spaced relatively flat portions provided adjacent opposite ends of said elongated tubular member, and said spaced relatively flat portions being carried on opposed side walls of said refrigerating apparatus for suppoRting said tubular member.
Claim 3
Dependent Claim
49 words
The apparatus as set forth in claim 1, wherein a restriction is carried in said tubular member adjacent said other end between said inlet and said outlet, a passage provided in said tubular member between said restriction and said outlet for communicating with said outlet for relieving pressure build-up.
Claim 4
Dependent Claim
48 words
The apparatus as set forth in claim 1, wherein said controller and said valve means are carried within a housing, a thin bracket having a portion extending over said side wall and being attached to said housing for supporting said housing adjacent a side wall of said housing.
Claim 5
Dependent Claim
191 words
An auxiliary refrigerating apparatus for a freeze having a wall joined by a bottom to define a cavity, a door carried by said wall for closing said cavity, the improvement comprising: a source of coolant; an elongated tubular member extending across said cavity; said tubular member having an inlet adjacent one end carried outside said freezer for receiving said coolant, an outlet adjacent the other end carried outside said freezer for relieving pressure build-up in said freezer, a main body portion between said inlet and said outlet having a plurality of spaced openings therein, a restriction carried in said tubular member adjacent said other end between said outlet and said spaced openings, a passageway provided in said tubular member between said restriction and said outlet for communicating with said outlet, and a relatively flat portion carried in said tubular member between said inlet and said spaced openings for supporting said tubular member on said wall of said freezer while permitting said door to be closed, and means coupling said source of coolant to said inlet for spraying coolant through said openings into said cavity for lowering the temperature of said freezer.
Claim 6
Dependent Claim
191 words
An auxiliary refrigerating apparatus for a freeze having a wall joined by a bottom to define a cavity, a door carried by said wall for closing said cavity, the improvement comprising: a source of coolant; an elongated tubular member extending across said cavity; said tubular member having an inlet adjacent one end carried outside said freezer for receiving said coolant, an outlet adjacent the other end carried outside said freezer for relieving pressure build-up in said freezer, a main body portion between said inlet and said outlet having a plurality of spaced openings therein, a restriction carried in said tubular member adjacent said other end between said outlet and said spaced openings, a passageway provided in said tubular member between said restriction and said outlet for communicating with said outlet, and a relatively flat portion carried in said tubular member between said inlet and said spaced openings for supporting said tubular member on said wall of said freezer while permitting said door to be closed, and means coupling said source of coolant to said inlet for spraying coolant through said openings into said cavity for lowering the temperature of said freezer.
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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |