Patent US5302020A successfully refreshed from Google Patents.
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 21:25
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.
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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 |