Patent US4084407A successfully refreshed from Google Patents.
US4084407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slush freezer
Assignee: Stoelting Brothers Co
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Filing: 1977-02-02
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Granted: 1978-04-18
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Expires: 1997-02-02
Abstract
Abstract A slush freezer has a stationary baffle with a set of stationary fingers and a rotatable agitator having a shaft and a set of movable fingers which interleave and interact with the stationary fingers of the baffle. Interference between the movable and stationary fingers is prevented by a thrust bearing between the agitator and the baffle.
Inventors
- 👤 Alfred E. Anhalt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:13
CPC Classifications
A; A23; A23G; A23G9/00; A23G9/04; A23G9/08; A23G9/12; A23G9/045; F; F25; F25C; F25C1/00; F25C1/12; F25C1/14; F25C1/145
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
98 words
In a slush freezer having a stationary baffle with a set of stationary fingers and a rotatable agitator having a shaft and a set of movable fingers which interact with the stationary fingers of the baffle, the improvement for preventing interference between the movable and stationary fingers and comprising a thrust bearing between the agitator and the baffle, said stationary baffle comprising a comb having a back from which the fingers extend, said thrust bearing comprising an annular ring about the agitator shaft and having one side against the comb back and its other side against the agitator.
Claim 2
Dependent Claim
98 words
In a slush freezer having a stationary baffle with a set of stationary fingers and a rotatable agitator having a shaft and a set of movable fingers which interact with the stationary fingers of the baffle, the improvement for preventing interference between the movable and stationary fingers and comprising a thrust bearing between the agitator and the baffle, said stationary baffle comprising a comb having a back from which the fingers extend, said thrust bearing comprising an annular ring about the agitator shaft and having one side against the comb back and its other side against the agitator.
Claim 3
Dependent Claim
33 words
The invention of claim 1 in which the agitator comprises an arm extending outwardly from the shaft and supporting the agitator fingers, said arm being against said other side of the annular ring.
Claim 4
Dependent Claim
24 words
The invention of claim 2 in which the agitator fingers are in the form of a comb having a back attached to said arm.
Claim 5
Dependent Claim
151 words
In a slush freezer having a stationary baffle with a set of stationary fingers and a rotatable agitator having a shaft and a set of movable fingers which interact with the stationary fingers of the baffle, the improvement for preventing interference between the movable and stationary fingers and comprising a thrust bearing between the agitator and the baffle, said thrust bearing comprising a washer about the agitator shaft and having one side against the baffle and its other side against the agitator, said agitator comprising a comb having a back from which the fingers extend inwardly toward the agitator shaft, an arm spanning between the comb back and the shaft to support the comb, said fingers having tips spaced from the shaft a distance greater than the radius of the washer to permit the washer to slide along the shaft to a position engaging the arm without interference with the fingers.
Claim 6
Dependent Claim
151 words
In a slush freezer having a stationary baffle with a set of stationary fingers and a rotatable agitator having a shaft and a set of movable fingers which interact with the stationary fingers of the baffle, the improvement for preventing interference between the movable and stationary fingers and comprising a thrust bearing between the agitator and the baffle, said thrust bearing comprising a washer about the agitator shaft and having one side against the baffle and its other side against the agitator, said agitator comprising a comb having a back from which the fingers extend inwardly toward the agitator shaft, an arm spanning between the comb back and the shaft to support the comb, said fingers having tips spaced from the shaft a distance greater than the radius of the washer to permit the washer to slide along the shaft to a position engaging the arm without interference with the fingers.
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) | 1981-04-17 | 1981-10-17 | 1982-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-17 | 1985-10-17 | 1986-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-17 | 1989-10-17 | 1990-04-18 | $7700.00 | Window Closed / Lapsed |