Patent US3578292A successfully refreshed from Google Patents.
US3578292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable mixer
Assignee: Individual
•
Filing: 1969-01-21
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Granted: 1971-05-11
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Expires: 1989-01-21
Abstract
Abstract A lightweight and portable mixing machine having a two-stage speed reduction system wherein a cylindrical vessel is supported for rotation by a drive shaft for a one-stage speed reduction and said drive shaft is operatively connected to a prime mover by a pulley-belt arrangement for a second-stage speed reduction.
Inventors
- 👤 Aubrey V Montague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:18
CPC Classifications
B; B28; B28C; B28C5/00; B28C5/08; B28C5/18; B28C5/1806; B28C5/1818; B01; B01F; B01F29/00; B01F29/60; B01F25/00; B01F25/30; B01F29/30; B01F29/31; B01F29/64; B01F29/40; B01F29/403; B01F29/4033
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
199 words
A lightweight and portable mixing machine comprising a frame having rotatably mounted therein an elongated and inclined drive shaft adapted supportingly and drivingly to engage the peripheral undersurface of a first generally cylindrical vessel having a base and a longitudinal axis and disposable with said axis substantially parallel to said drive shaft in the same vertical plane as said drive shaft, circular drive transmission means coaxially secured to said drive shaft corotatably therewith and having a pulley, an electrically operated motive power source having a rotatable drive spindle having drivingly secured thereto a driving pulley, a belt drivingly engaging both said Driving pulley and said driven pulley, and belt-tensioning means for maintaining said belt in driving engagement with said driving pulley and with said driven pulley, second support means adapted to engage said base of said first generally cylindrical vessel to permit rotation of said vessel about said axis, and third support means comprising a pair of rotatable members adapted to engage said first generally cylindrical vessel peripherally on opposite sides of said vertical plane to maintain said vessel in driving engagement with said drive shaft and to maintain said longitudinal axis of said vessel in said vertical plane.
Claim 2
Dependent Claim
199 words
A lightweight and portable mixing machine comprising a frame having rotatably mounted therein an elongated and inclined drive shaft adapted supportingly and drivingly to engage the peripheral undersurface of a first generally cylindrical vessel having a base and a longitudinal axis and disposable with said axis substantially parallel to said drive shaft in the same vertical plane as said drive shaft, circular drive transmission means coaxially secured to said drive shaft corotatably therewith and having a pulley, an electrically operated motive power source having a rotatable drive spindle having drivingly secured thereto a driving pulley, a belt drivingly engaging both said Driving pulley and said driven pulley, and belt-tensioning means for maintaining said belt in driving engagement with said driving pulley and with said driven pulley, second support means adapted to engage said base of said first generally cylindrical vessel to permit rotation of said vessel about said axis, and third support means comprising a pair of rotatable members adapted to engage said first generally cylindrical vessel peripherally on opposite sides of said vertical plane to maintain said vessel in driving engagement with said drive shaft and to maintain said longitudinal axis of said vessel in said vertical plane.
Claim 3
Dependent Claim
84 words
A mixing machine as claimed in claim 1 in which each of said shafts on which said cylindrical members are mounted is slidingly supported on a radially inwardly and downwardly inclined surface and in which helical tension springs secured both to said frame and to said shafts on which said cylindrical members are mounted urge said cylindrical members into peripheral contact with said first generally cylindrical vessel in turn to urge said first generally cylindrical vessel vertically downwardly into contact with said drive shaft.
Claim 4
Dependent Claim
59 words
A mixing machine as claimed in claim 1 in which said belt-tensioning means is constituted by a bracket adapted to support said motive power source pivotally about a generally horizontal axis whereby the weight of said motive power source serves to provide a belt-tensioning force causing said belt drivingly to engage both said driving pulley and said driven pulley.
Claim 5
Dependent Claim
52 words
A mixing machine as claimed in claim 3 which additionally comprises an electrically operated motive power source having a rotatable drive spindle having drivingly secured thereto a driving pulley and in which said motive power source is supported by and secured to said bracket for pivotal movement about said generally horizontal axis.
Claim 6
Dependent Claim
62 words
A mixing machine as claimed in claim 1 which has a first generally cylindrical vessel, having a base and a longitudinal axis, removably disposed in said mixing machine with said longitudinal axis substantially parallel to said drive shaft and in which said vessel is rotatably supported by said second and third support means and supportingly and drivingly engaged by said drive shaft.
Claim 7
Dependent Claim
46 words
A mixing machine as claimed in claim 1 in which a second generally cylindrical vessel is removably disposed within said first generally cylindrical vessel for driving engagement therewith by engagement of the outer surface of said second vessel with the inner surface of said first vessel.
Claim 8
Dependent Claim
79 words
A mixing machine as claimed in claim 1 in which a generally cylindrical vessel having a peripheral mesh wall is removably disposed within said first generally cylindrical vessel for driving engagement therewith by engagement of the outer surface of said vessel having a mesh wall with the inner surface of said first generally cylindrical vessel and in which extensible clamp means extend internally across said vessel having a mesh wall for the purpose of releasably retaining therein a container.
Claim 9
Dependent Claim
37 words
A mixing machine as claimed in claim 7 in which said extensible clamp means is provided with at least one terminal connector for releasably securing it to the mesh wall of said vessel having a mesh wall.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |