US5302020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planetary mixing apparatus
Assignee: Georg Fischer AG
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Filing: 1993-03-31
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Granted: 1994-04-12
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Expires: 2013-03-31
Abstract
Abstract A mixing vessel with a rotatable drive member for driving a mixer through a coupling mechanism such that the mixer orbits or revolves about a first axis (A) while at the same time rotates about a second axis (B) disposed radially of and substantially parallel to said first axis (A). The mixer rotates about axis (B) at a rotational speed of between 200 to 1,000 rpm while orbiting about axis (A) at a rotational sped of between 20 to 200 rpm. A second mixer in the form of a mixer plow is fixed to the rotatable drive member for rotation about axis (A).
Inventors
- 👤 Ernst O. Kruse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:36
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/80; B01F27/95; B01F27/951; B01F27/05; B01F27/09; B01F27/091; B01F27/23; B01F27/232; B01F27/2322; B01F27/2324
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
243 words
An apparatus for mixing molding sand so as to prepare a fluid molding sand mixture comprises: a mixing vessel having an elongated sidewall portion extending about an axis (A), a top cover and a bottom base which together define a mixing chamber; drive means disposed about said axis (A) within said mixing chamber; first mixing means located radially of said drive means about an axis (B) substantially parallel to said axis (A); coupling means located between said drive means and said first mixing means for drivingly connecting said drive means to said first fixing means; motor means for driving said drive means for orbiting said first mixing means about axis (A) as said first mixing means rotates about axis (B); said drive means includes a first drive shaft connected to said coupling means for orbiting said first mixing means about axis (A) and a second drive shaft concentric with said first drive shaft and connected to said coupling means for rotating said first mixing means about axis (B); second mixing means fixed to said first drive shaft wherein said second mixing means rotates about axis (A) as said first mixing means orbits about axis (A); and said coupling means includes a first gear unit positioned between said motor means and said first drive shaft and a second gear unit positioned between said second drive shaft and a centrifugal shaft of said first mixing means for rotating said first mixing means about axis (B).
Claim 2
Independent Claim
243 words
An apparatus for mixing molding sand so as to prepare a fluid molding sand mixture comprises: a mixing vessel having an elongated sidewall portion extending about an axis (A), a top cover and a bottom base which together define a mixing chamber; drive means disposed about said axis (A) within said mixing chamber; first mixing means located radially of said drive means about an axis (B) substantially parallel to said axis (A); coupling means located between said drive means and said first mixing means for drivingly connecting said drive means to said first fixing means; motor means for driving said drive means for orbiting said first mixing means about axis (A) as said first mixing means rotates about axis (B); said drive means includes a first drive shaft connected to said coupling means for orbiting said first mixing means about axis (A) and a second drive shaft concentric with said first drive shaft and connected to said coupling means for rotating said first mixing means about axis (B); second mixing means fixed to said first drive shaft wherein said second mixing means rotates about axis (A) as said first mixing means orbits about axis (A); and said coupling means includes a first gear unit positioned between said motor means and said first drive shaft and a second gear unit positioned between said second drive shaft and a centrifugal shaft of said first mixing means for rotating said first mixing means about axis (B).
Claim 3
Dependent Claim
35 words
An apparatus according to claim 1 wherein said motor means includes a first motor connected to said first drive shaft by said first gear unit and a second motor connected to said second drive shaft.
Claim 4
Dependent Claim
47 words
An apparatus according to claim 1 wherein said drive means rotates said first mixing means about axis (B) at a rotational speed of about 200 to 1,000 rpm and orbits said first mixing means about axis (A) at a rotational speed of about 20 to 200 rpm.
References Cited (Backward Citations)
US1847227A
Cited
FR975014A
Cited
US3075746A
Cited
US4380398A
Cited
DE3312869A1
Cited
SU1430089A1
Cited
US4704035A
Cited
US4697929A
Cited
US4786184A
Cited
SU1629080A1
Cited
US5028141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-04-11 | 1997-10-11 | 1998-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-04-11 | 2001-10-11 | 2002-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-04-11 | 2005-10-11 | 2006-04-12 | $7700.00 | Window Closed / Lapsed |