Planetary gear transmission systems or components – Planetary gearing or element – Nonplanetary gearing combined with planetary
Reexamination Certificate
2004-06-30
2008-08-12
Pang, Roger (Department: 3681)
Planetary gear transmission systems or components
Planetary gearing or element
Nonplanetary gearing combined with planetary
C074S6650GD, C416S1700HM
Reexamination Certificate
active
07410442
ABSTRACT:
A transmission for a wind turbine includes a housing (20) in which two shafts (26, 28) rotate, each being supported on a locating bearing (50, 60) which transmits thrust loads to the housing as well as radial loads and on a nonlocating bearing (48, 58) which transmits only radial loads to the housing. The shafts carry helical gears (52, 52, 62) which induce thrust loads in the shafts when the shafts transmit torque. The locating bearings are unitized single row tapered roller bearings which are oriented to transmit thrust loads in the primary direction through their raceways (132, 138) and in the secondary direction through ribs (134, 144) at the ends of their rollers (146). The nonlocating bearings take the form of a single row cylindrical roller bearings which accommodate differential thermal expansion and contraction between the shafts and housing.
REFERENCES:
patent: 3397020 (1968-08-01), Edwards
patent: 3420589 (1969-01-01), Green et al.
patent: 3689127 (1972-09-01), Hampp et al.
patent: 4136916 (1979-01-01), Musselman et al.
patent: 5009523 (1991-04-01), Folger et al.
patent: 5735612 (1998-04-01), Fox et al.
patent: 6420808 (2002-07-01), Hosle
patent: 6544140 (2003-04-01), Gradu et al.
patent: 6658955 (2003-12-01), Fuhrer et al.
patent: 6695738 (2004-02-01), Sullivan et al.
patent: 7008348 (2006-03-01), LaBath
patent: 7127967 (2006-10-01), Cook et al.
patent: 4438500 (1996-05-01), None
patent: 1227255 (2002-07-01), None
patent: 360129453 (1985-07-01), None
patent: 10096463 (1998-04-01), None
PCT/US04/21265—Notification of Transmittal of International Preliminary Examination Report (1 page).
PCT/US04/21265—International Preliminary Examination Report (5 pages).
“Tapered Roller Bearings—Single Row” Internet Article, Anonymous, Feb. 19, 2003, whole document.
“Lagerungen Der Wellen und Zahraeder in Stirnradgetrieben”, Schiemann, S. Krausskopf Verlag fur Wirtschaft GMBH. Mainz, DE, vol. 32, No. 7 Jul. 7, 1993 pp. 34, 36-39, the whole document.
Pang Roger
Polster Lieder Woodruff & Lucchesi L.C.
The Timken Company
LandOfFree
Transmission containing helical gearing and bearing... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transmission containing helical gearing and bearing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmission containing helical gearing and bearing... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4016686