US3958968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ice cream freezer
Assignee: Individual
•
Filing: 1974-03-28
•
Granted: 1976-05-25
•
Expires: 1994-03-28
Abstract
Abstract An ice cream making apparatus improved in that the refrigerated cylindrical container has a product outlet at its bottom portion for hygienic removal of the product ice cream and for ease of the operation, and in that the revolving blade assembly inside the container comprises essentialy a scraper member and a pusher member, which are coaxiallly driven from below the container and adapted to not only stir and mill intimately the stock solution or emulsion but also facilitate automatic removal of the product.
Inventors
- 👤 Yoshisada Hosaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:25
CPC Classifications
A; A23; A23G; A23G9/00; A23G9/04; A23G9/08; A23G9/12; A23G9/22; A23G9/28; A23G9/281; Y; Y10; Y10S; Y10S366/00; Y10S366/601
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
253 words
An ice cream freezer comprising: a refrigerated cylindrical container supported within a housing and opened at its upper end, said container having an integrally formed hollow cylinder extending upright through the central portion of its bottom wall up to near its open end, and having between said hollow cylinder and its inner wall a product outlet communicating to and opening at a side wall portion of said housing; and a revolving blade positioned within said container, said blade assembly including a rotating shaft inserted through the hollow cylinder and having a top and extending beyond the upper end of the cylinder, an upper hub rotatably supported at an upper end portion of the cylinder and drivingly connected with the top end of said rotating shaft, said upper hub having a threadably engageable closing cap and a pair of horizontally extending arms; a lower hub surrounding the hollow cylinder near the bottom of the container and connected to said horizontal arms through vertical stays, said lower hub having horizontally extending pusher blades; and a pair of scraper blades supported between the outer ends of said horizontal arms and the outer ends of said pusher blades and inclined toward the direction of rotation with respect to the generating line of said cylindrical container and frictionally engaging the inner wall surface of the container, each of said scraper blades having land portions and groove portions alternately formed at its outer surface, each groove portion having narrower and broader widths at its leading and trailing edges respectively.
Claim 2
Dependent Claim
253 words
An ice cream freezer comprising: a refrigerated cylindrical container supported within a housing and opened at its upper end, said container having an integrally formed hollow cylinder extending upright through the central portion of its bottom wall up to near its open end, and having between said hollow cylinder and its inner wall a product outlet communicating to and opening at a side wall portion of said housing; and a revolving blade positioned within said container, said blade assembly including a rotating shaft inserted through the hollow cylinder and having a top and extending beyond the upper end of the cylinder, an upper hub rotatably supported at an upper end portion of the cylinder and drivingly connected with the top end of said rotating shaft, said upper hub having a threadably engageable closing cap and a pair of horizontally extending arms; a lower hub surrounding the hollow cylinder near the bottom of the container and connected to said horizontal arms through vertical stays, said lower hub having horizontally extending pusher blades; and a pair of scraper blades supported between the outer ends of said horizontal arms and the outer ends of said pusher blades and inclined toward the direction of rotation with respect to the generating line of said cylindrical container and frictionally engaging the inner wall surface of the container, each of said scraper blades having land portions and groove portions alternately formed at its outer surface, each groove portion having narrower and broader widths at its leading and trailing edges respectively.
Claim 3
Dependent Claim
35 words
The ice cream freezer as claimed in claim 1, wherein each of said pusher blades has a tilt wall tilted in the direction of rotation and a perpendicular triangle wall provided at its outer end.
Claim 4
Dependent Claim
22 words
The ice cream freezer as claimed in claim 2, wherein said tilt wall is tilted at about 30° with respect to horizon.
Claim 5
Dependent Claim
27 words
The ice cream freezer as claimed in claim 1, wherein said product outlet has a configuration capable of minimizing the flow resistance of the product ice cream.
Claim 6
Dependent Claim
247 words
An ice cream freezer comprising: a refrigerated cylindrical container supported within a housing and opened at its upper end, said container having an integrally formed hollow cylinder extending upright through the central portion of its bottom wall up to near its open upper end, and having between said hollow cylinder and its inner wall a product outlet communicating to and opening at a side wall portion of said housing; and a revolving blade assembly positioned within said container; said blade assembly including a rotating shaft inserted through the hollow cylinder and having a top and extending beyond the upper end of the cylinder, an upper hub rotatably supported at an upper end portion of the cylinder and drivingly connected with the top end of said rotating shaft, said upper hub having a threadably engageable closing cap and a pair of horizontally extending arms; a lower hub surrounding the hollow cylinder near the bottom of the container and connected to said horizontal arms through vertical stays, said lower hub having horizontally extending pusher blades; and a pair of scraper blades supported between the outer ends of said horizontal arms and the outer ends of said pusher blades inclined toward the direction of rotation with respect to the generating line of said cylindrical container and frictionally engaging the inner wall surface of the container, each of said pusher blades having a tilt wall tilted in the direction of rotation and a perpendicular triangle wall provided at its outer end.
Claim 7
Dependent Claim
247 words
An ice cream freezer comprising: a refrigerated cylindrical container supported within a housing and opened at its upper end, said container having an integrally formed hollow cylinder extending upright through the central portion of its bottom wall up to near its open upper end, and having between said hollow cylinder and its inner wall a product outlet communicating to and opening at a side wall portion of said housing; and a revolving blade assembly positioned within said container; said blade assembly including a rotating shaft inserted through the hollow cylinder and having a top and extending beyond the upper end of the cylinder, an upper hub rotatably supported at an upper end portion of the cylinder and drivingly connected with the top end of said rotating shaft, said upper hub having a threadably engageable closing cap and a pair of horizontally extending arms; a lower hub surrounding the hollow cylinder near the bottom of the container and connected to said horizontal arms through vertical stays, said lower hub having horizontally extending pusher blades; and a pair of scraper blades supported between the outer ends of said horizontal arms and the outer ends of said pusher blades inclined toward the direction of rotation with respect to the generating line of said cylindrical container and frictionally engaging the inner wall surface of the container, each of said pusher blades having a tilt wall tilted in the direction of rotation and a perpendicular triangle wall provided at its outer end.
Claim 8
Dependent Claim
22 words
The ice cream freezer as claimed in claim 5, wherein said tilt wall is tilted at about 30° with respect to horizon.
References Cited (Backward Citations)
US2266766A
Cited
US2021153A
Cited
US2263794A
Cited
US2557813A
Cited
US3138008A
Cited
US3456540A
Cited
US3465540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |