Patent US4727720A successfully refreshed from Google Patents.
US4727720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combination ice mold and ice extractor
Assignee: Individual
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Filing: 1986-04-21
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Granted: 1988-03-01
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Expires: 2006-04-21
Abstract
Abstract An ice maker is disclosed for freezing ice pieces and delivering the ice pieces to a receptacle under a chute. The ice machine is made up of an ice mold with an opening in its bottom which receives and ice extractor with an open bottom and upwardly and outwardly extending sides. An evaporator plate is supported below the opening in the ice mold bottom and a water supply is provided to maintain the water in the mold at a predetermined level. A thermo electro unit is disposed below the evaporator. Classical freon refrigeration can also be used. Thus when water is frozen to ice in the extractor, the refrigeration, or thermo-electric means melts the ice loose from the evaporator, in some models, and also from the ice extractor. The ice extractor, which is attached to a motor by means of an arm, swings to an inverted position over an ice chute from which the ice falls, is in some models aided by ambient heat, into a repository. The extractor then swings back into the mold for another cycle.
Inventors
- 👤 Paul F. Wernicki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:30
CPC Classifications
F; F25; F25B; F25B21/00; F25B21/02; F25C; F25C1/00; F25C1/04; F25C5/00; F25C5/02; F25C5/04; F25C2500/00; F25C2500/08
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
175 words
In combination an ice mold having an open top, a bottom and a cavity in said bottom, means to supply water to said open top mold and an ice receiving means, a hollow ice extractor having spaced sides, an open top and an open bottom, refrigeration means associated with said ice mold below said cavity in said bottom, means swingably supporting said ice extractor on said ice mold, said spaced sides being inclined from the lower edge of said extractor upwardly and outwardly when said extractor is in position in said ice mold, said ice extractor being adapted to receive water with said refrigeration means closing said open bottom of said ice extractor whereby ice is frozen in said ice extractor, said ice extractor being adapted to be swung out of said ice mold to an inverted position over said ice receiving means whereby ambient air engages said ice extractor, melting the ice that is in contact with said ice extractor and allowing said ice to fall from said extractor into said ice receiving means.
Claim 2
Dependent Claim
175 words
In combination an ice mold having an open top, a bottom and a cavity in said bottom, means to supply water to said open top mold and an ice receiving means, a hollow ice extractor having spaced sides, an open top and an open bottom, refrigeration means associated with said ice mold below said cavity in said bottom, means swingably supporting said ice extractor on said ice mold, said spaced sides being inclined from the lower edge of said extractor upwardly and outwardly when said extractor is in position in said ice mold, said ice extractor being adapted to receive water with said refrigeration means closing said open bottom of said ice extractor whereby ice is frozen in said ice extractor, said ice extractor being adapted to be swung out of said ice mold to an inverted position over said ice receiving means whereby ambient air engages said ice extractor, melting the ice that is in contact with said ice extractor and allowing said ice to fall from said extractor into said ice receiving means.
Claim 3
Dependent Claim
32 words
The combination recited in claim 1 wherein said ice extractor is made of a good heat conducting material, said ice extractor has sharp lower edges adapted to rest on said ice mold.
Claim 4
Dependent Claim
39 words
The combination recited in claim 1 wherein opening in said ice mold bottom receives said ice extractor, said refrigeration means being disposed under said opening in the bottom of said ice mold and forming a bottom for said cavity.
Claim 5
Dependent Claim
65 words
The combination recited in claim 1 wherein said means swingably supporting said ice extractor comprises an arm swingably supported with respect to said mold and said extractor is loosely attached to said arm, motor means connected to said arm to swing said arm and said extractor from a position in said ice mold to a position over said ice receiving means adjacent said ice mold.
Claim 6
Dependent Claim
14 words
The combination recited in claim 2 wherein said refrigeration means includes an evaporator plate.
Claim 7
Dependent Claim
16 words
The combination recited in claim 5 wherein said refrigerator means is a freon type refrigerator means.
Claim 8
Dependent Claim
16 words
The combination recited in claim 5 wherein said refrigerator means includes a compression expansion refrigerator means.
Claim 9
Dependent Claim
16 words
The combination recited in claim 5 wherein said refrigerator means includes an expansion type refrigerator means.
Claim 10
Dependent Claim
16 words
The combination recited in claim 5 wherein a thermo-electric module is disposed under said evaporator plate.
Claim 11
Dependent Claim
22 words
The combination recited in claim 3 wherein said ice mold is shaped to mold the ice in the shape of specific shapes.
Claim 12
Dependent Claim
44 words
The combination recited in claim 3 wherein said ice extractor has an outwardly directed flange and the bottom of said ice mold includes a bottom means disposed around said cavity and underlying said flange when said ice extractor is disposed in said ice mold.
Claim 13
Dependent Claim
29 words
The combination recited in claim 11 wherein a water supply means is provided for said ice mold for maintaining the water level in said mold at a predetermined level.
Claim 14
Dependent Claim
147 words
In combination an ice cube machine comprising: an ice mold made of thermo-plastic material or other low thermally conductive moldable material, an evaporator plate, a water supply, an ice extractor, an ice extractor motor, a cavity in the bottom of the ice cube mold, said ice extractor being received in said cavity in said mold, said evaporator plate being disposed below said bottom of said ice cube mold, connecting means connecting said water supply to said mold to maintain the water in said mold at a predetermined level, swingable means swingably connecting said ice extractor to said ice extractor motor, an ice chute, means to move said ice extractor from a position in said ice mold to an inverted position over said ice cube chute, whereby an ice cube in said ice extractor will melt loose from said extractor and fall from said extractor into said chute.
Claim 15
Dependent Claim
147 words
In combination an ice cube machine comprising: an ice mold made of thermo-plastic material or other low thermally conductive moldable material, an evaporator plate, a water supply, an ice extractor, an ice extractor motor, a cavity in the bottom of the ice cube mold, said ice extractor being received in said cavity in said mold, said evaporator plate being disposed below said bottom of said ice cube mold, connecting means connecting said water supply to said mold to maintain the water in said mold at a predetermined level, swingable means swingably connecting said ice extractor to said ice extractor motor, an ice chute, means to move said ice extractor from a position in said ice mold to an inverted position over said ice cube chute, whereby an ice cube in said ice extractor will melt loose from said extractor and fall from said extractor into said chute.
Claim 16
Dependent Claim
25 words
The combination recited in claim 13 wherein said ice extractor has an outwardly directed flange adapted to overlie said ice mold bottom around said cavity.
Claim 17
Dependent Claim
51 words
The combination recited in claim 1 wherein said ice mold has dual wall sides and a square open top and a sharp lower edge of said ice mold disposed around the periphery of said cavity and engaging said evaporator plate providing a seal between said ice mold and said evaporator plate.
Claim 18
Dependent Claim
53 words
The combination recited in claim 2 wherein said ice extractor has side walls defining a generally square enclosure with open to and open bottom, said ice extractor is adapted to be received in said opening in said ice mold with the bottom edges of said ice extractor sides resting on said refrigeration means.
Claim 19
Dependent Claim
45 words
The combination recited in claim 3 wherein said water supply comprises a float tank assembly, said float tank assembly having a float control valve for controlling the level of water in said float tank equal to the level of water desired in said ice mold.
Claim 20
Dependent Claim
49 words
The combination recited in claim 4 wherein said swingable means supporting and ice mold extractor to said ice mold comprises an arm swingably attached to said ice mold and adapted to be swung from a position inside said ice mold to an inverted position over said ice cube chute.
Claim 21
Dependent Claim
60 words
The combination recited in claim 5 wherein said swingable means connected to said ice extractor comprises an ice extractor motor on said ice mold, said motor having a shaft attached to an arm, said arm being loosely attached to said ice extractor whereby the loose attachment allows for a firmer more positive seal of said mold lip or evaporator plate.
Claim 22
Dependent Claim
186 words
An ice machine comprising a mold, an ice extractor, an evaporator plate and a water supply, said mold comprising sides, a bottom and an open top, said bottom having a cavity therein defined by cavity sides terminating in an opening in the bottom, said cavity sides are tapered downwardly and inwardly converging toward said opening terminating in sharp edges, said evaporator plate being disposed below said opening, sealing means between said ice mold and said evaporator plate whereby said evaporator plate forms a closure for said opening in said ice mold, said ice extractor having an open top, an open bottom and sides extending downwardly and inwardly terminating in a sharp lower edge, said extractor being adapted to be received in said cavity, said sharp lower edge of said extractor resting on said evaporator plate, means to supply water to said mold, means to swing said ice extractor from a position in said cavity to an inverted position over an ice receptacle, a heat sink, said ice mold being supported on said heat sink, said evaporator plate being supported in spaced relation to said heat sink.
Claim 23
Dependent Claim
186 words
An ice machine comprising a mold, an ice extractor, an evaporator plate and a water supply, said mold comprising sides, a bottom and an open top, said bottom having a cavity therein defined by cavity sides terminating in an opening in the bottom, said cavity sides are tapered downwardly and inwardly converging toward said opening terminating in sharp edges, said evaporator plate being disposed below said opening, sealing means between said ice mold and said evaporator plate whereby said evaporator plate forms a closure for said opening in said ice mold, said ice extractor having an open top, an open bottom and sides extending downwardly and inwardly terminating in a sharp lower edge, said extractor being adapted to be received in said cavity, said sharp lower edge of said extractor resting on said evaporator plate, means to supply water to said mold, means to swing said ice extractor from a position in said cavity to an inverted position over an ice receptacle, a heat sink, said ice mold being supported on said heat sink, said evaporator plate being supported in spaced relation to said heat sink.
Claim 24
Dependent Claim
25 words
The ice machine recited in claim 20 wherein said sharp edge engages said evaporator plate forming a seal between said mold and said evaporator plate.
Claim 25
Dependent Claim
44 words
The ice maker recited in claim 20 wherein said ice extractor has tapered sides and is adapted to swing over said receptacle in an inverted position whereby ice from said extractor may fall from said extractor when said extractor is inverted over said receptacle.
Claim 26
Dependent Claim
89 words
The ice making machine recited in claim 22 wherein said ice mold has outwardly directed flanges attached to the upper part of sides of said ice extractor, said flanges overlying said ice mold bottom around said cavity when said ice extractor is supported in said opening in said ice mold bottom, said ice mold and said flanges being made of high heat conductivity material whereby heat from the ambient atmosphere is conducted to said ice in said extractor to free ice in said extractor from adherence to said extractor.
Claim 27
Dependent Claim
31 words
The ice machine recited in claim 23 wherein said open bottom of said extractor has a shape to conform to an ice piece of a predetermined outline of a recognizable object.
Claim 28
Dependent Claim
16 words
The ice machine recited in claim 24 wherein said lower edges of said extractor are sharp.
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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) | 1991-03-01 | 1991-08-31 | 1992-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-01 | 1995-08-31 | 1996-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-01 | 1999-08-31 | 2000-03-01 | $7700.00 | Window Closed / Lapsed |