Patent US4664529A successfully refreshed from Google Patents.
US4664529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Icecream-making household appliance incorporating an automatic stirring paddle stopping device
Assignee: Individual
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Filing: 1985-05-14
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Granted: 1987-05-12
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Expires: 2005-05-14
Abstract
Abstract The household appliance disclosed comprises an icecreaming vessel wherein an icecreaming paddle is active which is driven by an electric motor and a device for automatically stopping the action of the paddle. That device includes means of sensing the icecream consistency by measuring the electric current drawn by the electric motor. Such means are operative to drive a switch element in the supply circuit to the electric motor to open on reaching a preset current value.
Inventors
- 👤 Alfredo Cavalli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:46
CPC Classifications
A; A23; A23G; A23G9/00; A23G9/04; A23G9/08; A23G9/12; A23G9/22; A23G9/228; Y; Y10; Y10S; Y10S366/00; Y10S366/601
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
An ice-cream making household appliance comprising a box-type body, an ice-creaming vessel supported in a side body, an electric motor mounted in the box-type body, an ice-creaming paddle settled in said ice-creaming vessel and driven by said electric motor, an electric power supply circuit including a power line for energizing said electric motor by a current, a switch element in said power line, sensing means to measure said current and control said switch element when said current reaches a predetermined value.
Claim 2
Dependent Claim
81 words
An ice-cream making household appliance comprising a box-type body, an ice-creaming vessel supported in a side body, an electric motor mounted in the box-type body, an ice-creaming paddle settled in said ice-creaming vessel and driven by said electric motor, an electric power supply circuit including a power line for energizing said electric motor by a current, a switch element in said power line, sensing means to measure said current and control said switch element when said current reaches a predetermined value.
Claim 3
Dependent Claim
108 words
A household appliance according to claim 1, wherein said sensing means include: a regulator gauge wherethrough said current to said motor is caused to flow and which generates a signal proportional to said current and to a setting of a regulator therein, an integrator for interfacing and integrating said signal from said regulator gauge, a threshold switch adapted to supply a threshold signal upon the integrated signal reaching a preset value, a memory adapted to transfer and store the threshold signal from the threshold switch, and a logic switch controlled by said memory and in turn controlling the power line to said electric motor via said switch element.
Claim 4
Dependent Claim
23 words
A household appliance according to claim 2, wherein said switch element is a TRIAC whose control terminal is energized through said logic switch.
Claim 5
Dependent Claim
15 words
A household appliance according to claim 2 including an electronic buzzer controlled by said memory.
Claim 6
Dependent Claim
41 words
A household appliance according to claim 1 wherein the level of said current supplied to said electric motor is representative of the consistency of ice-cream ingredients placed in said ice-creaming vessel and said ice-creaming vessel includes a controllable refrigeration means therefor.
References Cited (Backward Citations)
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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) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |