US3640386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable sifting apparatus
Assignee: Individual
•
Filing: 1969-06-02
•
Granted: 1972-02-08
•
Expires: 1989-06-02
Abstract
Abstract A compact, portable, power-driven sifter is provided for use in sifting flour or the like, and is particularly suited for restaurant and institutional use. A basket having replaceable screens is mounted in a housing for horizontal oscillatory movement by means of a motor-driven eccentric linkage, the basket being supported on rollers and guided by sheave rolls against lateral displacement. The housing is supported in a highly raised position by elongated legs to permit pans, trays and the like to be moved in and out from under the unit from any side thereof.
Inventors
- 👤 John W Frangos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:55
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/28; B07B1/30; B22; B22F; B22F12/00; B22F12/22; B22F12/222
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
173 words
Sifting apparatus, comprising a. a housing, having a discharge opening formed in the bottom thereof, b. spaced elongated legs mounted to said housing for elevating said housing above a supporting surface at a height sufficient to permit access under said housing and from any side thereof, c. an open frame mounted for oscillation in said housing, d. spaced juxtaposed rollers mounted to said housing and engaging opposite sides of said frame for horizontal movement thereof, e. a foraminous basket removably mounted in said frame, f. a motor mounted at one end of said housing, and g. an eccentric coupling connecting said motor to one end of said frame whereby operation of said motor will oscillate said frame and said basket, h. said frame being formed with a horizontal flange extending at least along the sides thereof, i. said rollers including spaced rollers mounted for rotation about horizontal axes and engaging the underside of said flange and spaced annularly grooved rollers mounted for rotation about vertical axes and engaging the edges of said flange.
Claim 2
Dependent Claim
173 words
Sifting apparatus, comprising a. a housing, having a discharge opening formed in the bottom thereof, b. spaced elongated legs mounted to said housing for elevating said housing above a supporting surface at a height sufficient to permit access under said housing and from any side thereof, c. an open frame mounted for oscillation in said housing, d. spaced juxtaposed rollers mounted to said housing and engaging opposite sides of said frame for horizontal movement thereof, e. a foraminous basket removably mounted in said frame, f. a motor mounted at one end of said housing, and g. an eccentric coupling connecting said motor to one end of said frame whereby operation of said motor will oscillate said frame and said basket, h. said frame being formed with a horizontal flange extending at least along the sides thereof, i. said rollers including spaced rollers mounted for rotation about horizontal axes and engaging the underside of said flange and spaced annularly grooved rollers mounted for rotation about vertical axes and engaging the edges of said flange.
Claim 3
Dependent Claim
38 words
Sifting apparatus according to claim 1 including a removable screen mounted in said basket, said screen being coextensive with said basket, resilient bumpers mounted along the edges of said screen and upright posts mounted at the ends thereof.
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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |