Heat exchange – With scraper removing product from temperature modifying...
Reexamination Certificate
2007-12-04
2007-12-04
Flanigan, Allen J. (Department: 3744)
Heat exchange
With scraper removing product from temperature modifying...
C366S311000
Reexamination Certificate
active
10909314
ABSTRACT:
A blade for mounting to a scraped surface heat exchanger drive shaft by pivotal connection with a mounting pin has a blade body having a first side and a second side, and a scraper edge and a hinge edge. At least one mounting hole extends through the blade body generally proximate at the hinge edge. An L-shaped locking track protrudes into the first set of the blade, having an entry track extending from the hinge edge and an intermediate track extending from the entry track to the mounting hole. An L-shaped locking track also protruding into the second side of the blade, has an entry track extending from the hinge edge of the blade and an intermediate track extending from the entry track to and past the mounting hole.
REFERENCES:
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patent: 3951564 (1976-04-01), Montgomery
patent: 5485880 (1996-01-01), Zeuthen
patent: 5810073 (1998-09-01), Holdt et al.
patent: 6966757 (2005-11-01), Hardy et al.
patent: 7237944 (2007-07-01), Hardy et al.
Hagen Curt
Hardy Benjamin
Norman Drew Van
Baker & Hostetler LLP
Flanigan Allen J.
SPX Corporation
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