US3829056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for freezing ice bodies
Assignee: Whirlpool Corp
•
Filing: 1972-06-12
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Granted: 1974-08-13
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Expires: 1992-06-12
Abstract
Abstract An apparatus for freezing ice bodies having a freezing tray and a separable cover connected thereto by improved hinge means and with the cover having edge openings permitting the circulation of subfreezing air beneath the cover and across the surface of water in the freezing tray molds.
Inventors
- 👤 C Baker
- 👤 L Beckett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:59
CPC Classifications
F; F25; F25C; F25C1/00; F25C1/22; F25C1/24; F25C1/243
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
89 words
Apparatus for freezing ice bodies, comprising: a freezing tray having a plurality of molds for forming ice bodies; a separable cover releasably connected to said tray at a plurality of edge located hinges permitting opening of the cover to expose said molds, said cover and tray having edge rims contacting each other when closed; and air vent opening means on opposite sides of said cover rim for providing circulation of subfreezing air within the closed cover across the surfaces of water in said molds for aiding in the freezing.
Claim 2
Dependent Claim
89 words
Apparatus for freezing ice bodies, comprising: a freezing tray having a plurality of molds for forming ice bodies; a separable cover releasably connected to said tray at a plurality of edge located hinges permitting opening of the cover to expose said molds, said cover and tray having edge rims contacting each other when closed; and air vent opening means on opposite sides of said cover rim for providing circulation of subfreezing air within the closed cover across the surfaces of water in said molds for aiding in the freezing.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 wherein said tray and cover have substantially coplanar outer supporting surfaces when opened to 180*.
Claim 4
Dependent Claim
29 words
The apparatus of claim 1 wherein said cover has a top with the cover edge rim that contains said opening means being at substantially right angles to the top.
Claim 5
Dependent Claim
84 words
The apparatus of claim 1 wherein each said hinge comprises a single cross pin mounted on one of the tray and cover having rounded projecting opposite ends and a socket on the other of the tray and cover having a pair of spaced side walls with facing recesses removably receiving the rounded ends, one of the side walls in each pair having at one end a shaped guideway for guiding the pin into locking position in its side walls by a resilient snap action.
Claim 6
Dependent Claim
35 words
The apparatus of claim 1 wherein both said tray and cover are flexible for torque twisting in releasing the ice bodies and the hinges are spaced apart so as to preclude interference with the twisting.
Claim 7
Dependent Claim
43 words
The apparatus of claim 1 wherein said tray and cover have substantially coplanar outer supporting surfaces when opened to 180*, said cover having a top with the cover edge rim that contains said opening means being at substantially right angles to the top.
References Cited (Backward Citations)
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Cited
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US3243838A
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US3393444A
Cited
US3328831A
Cited
US3414229A
Cited
US3497908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |