Inventor
OSTERGAARD DAVID A
US15 patents
⚠️ This page may combine multiple inventors who share the name “OSTERGAARD DAVID A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CEDARAPIDS INC
14 patentsUS6347708B1Feb 19, 2002
Wheel case for a vibratory apparatus
CEDARAPIDS INC19 citations92
US5971306AOct 26, 1999
Gyratory crusher having tramp iron relief system with an annular hydraulic manifold
CEDARAPIDS INC35 citations91
US5944265AAug 31, 1999
Gyratory crusher having self-contained lubrication system
CEDARAPIDS INC19 citations91
US5803382ASep 8, 1998
Gyratory crusher having corrugation-like-seal
CEDARAPIDS INC23 citations91
US6155507ADec 5, 2000
Device for securing the stationary jaw of a jaw crusher
CEDARAPIDS INC16 citations83
US6161650ADec 19, 2000
Lubricating system for a vibratory apparatus
CEDARAPIDS INC16 citations79
US6641068B2Nov 4, 2003
Jaw for a jaw crusher
CEDARAPIDS INC9 citations73
US6126101AOct 3, 2000
Double wedge key plates for a jaw crusher
CEDARAPIDS INC9 citations73
US5799886ASep 1, 1998
Gyratory crusher having thermal relief system
CEDARAPIDS INC4 citations73
US5111569AMay 12, 1992
Method of locking an impeller bar against a seat
CEDARAPIDS INC10 citations73
US5005772AApr 9, 1991
Impeller bar installation and repositioning means for impact crushers having open type rotors
CEDARAPIDS INC14 citations73
US5004169AApr 2, 1991
Impeller bar assembly with adjustable locking mechanism
CEDARAPIDS INC12 citations73
US4925114AMay 15, 1990
Impeller bar installation and repositioning means for impact crushers having "open" type rotors
CEDARAPIDS INC12 citations73
US5875981AMar 2, 1999
Gyratory crusher having tramp iron relief system
CEDARAPIDS INC12 citations72