Agitating – Stirrer within stationary mixing chamber – Rotatable stirrer
Reexamination Certificate
2008-04-08
2008-04-08
Cooley, Charles E. (Department: 1797)
Agitating
Stirrer within stationary mixing chamber
Rotatable stirrer
C277S562000
Reexamination Certificate
active
11584029
ABSTRACT:
A mortar mixer includes a substantially cylindrical drum having end plates supporting trunnion assemblies, with housings, having an interior space defined by an interior surface around the paddle shaft. A first seal is located adjacent the end plate and is positioned around the shaft and is mounted between the shaft and the interior surface. A second seal is spaced outwardly from the first seal and positioned around the shaft between the shaft and the affixed interior surface. The first and second seals partition a portion of the interior space to define a first chamber for carrying grease. The second seal is spaced away from a shaft bearing to partition a second portion of the interior space to define a second chamber for carrying grease which forms a positive seal to prevent contaminated grease from entering the bearing when the first chamber is purged of contaminated grease.
REFERENCES:
patent: 3318606 (1967-05-01), Houck
patent: 3375014 (1968-03-01), Chubb et al.
patent: 3415581 (1968-12-01), Seubert
patent: 3869131 (1975-03-01), Derner
patent: 3921962 (1975-11-01), Feger et al.
patent: 3932006 (1976-01-01), Tertinek et al.
patent: 3934311 (1976-01-01), Thompson
patent: 3937446 (1976-02-01), Feger et al.
patent: 4097926 (1978-06-01), Face, Jr.
patent: 4850723 (1989-07-01), Whiteman, Jr.
patent: 5094540 (1992-03-01), Face, Jr.
patent: 5105636 (1992-04-01), Anastase et al.
patent: 5277489 (1994-01-01), Hamm
patent: 5735603 (1998-04-01), Kesig et al.
patent: 5927864 (1999-07-01), Feerick
patent: 6435515 (2002-08-01), Galletti
patent: 6616326 (2003-09-01), White
patent: 7025506 (2006-04-01), Varel et al.
patent: 2002/0057626 (2002-05-01), Schafer et al.
patent: 2005/0146096 (2005-07-01), Swisher
patent: 2007/0070806 (2007-03-01), Swisher
patent: 2007/0241514 (2007-10-01), Orlowski et al.
patent: 3736435 (1989-05-01), None
patent: 06055052 (1994-03-01), None
patent: 2005-28854 (2005-02-01), None
Cooley Charles E.
Jacobson & Holman PLLC
Stone Construction Equipment, Inc
LandOfFree
Mortar mixer and trunnion assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mortar mixer and trunnion assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mortar mixer and trunnion assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3951762