192 clutches and power-stop control – Clutches – Operators
Reexamination Certificate
2007-02-15
2010-06-08
Lorence, Richard M. (Department: 3655)
192 clutches and power-stop control
Clutches
Operators
C192S066220, C192S089270, C192S11000B
Reexamination Certificate
active
07731006
ABSTRACT:
A clutch assembly having an overall diameter and overall axial length. Both the axial length and the ratio of the length to the diameter are reduced. A translatable clutch piston is in communication with a pressure chamber and is movable between a piston neutral position and a piston activated position in response to air pressure. A cone clutch member is moved from a clutch engaged position to a clutch disengaged position in response to the translatable clutch piston moving from the piston neutral position to the piston activated position. The cone clutch member engages the rotating drive shaft when in the clutch engaged position. A clutch spring member biases the cone clutch member into the clutch engaged position with a clutch engagement force. The clutch spring has a primary spring ratio of a wire diameter to a spring diameter optimized such that a maximum spring force is achieved while minimizing the spring length. A movable carrier member for the spring member has an increased axial length to reduce and limit abrasion damage to the piston and member. The bearing assembly has a reduced axial length limited by the ratio of its length to its inner diameter.
REFERENCES:
patent: 2652296 (1953-09-01), Palmgren et al.
patent: 3684397 (1972-08-01), Elmer
patent: 3757914 (1973-09-01), Elmer
patent: 3777866 (1973-12-01), Elmer
patent: 3985214 (1976-10-01), Hall et al.
patent: 4044729 (1977-08-01), Elmer
patent: 4899861 (1990-02-01), Cummings, III
patent: 5215175 (1993-06-01), Fenzel
patent: 5518093 (1996-05-01), Hartig et al.
patent: 5547060 (1996-08-01), Giese
patent: 5667045 (1997-09-01), Cummings, III
patent: 5996753 (1999-12-01), Temme et al.
patent: 2006/0076210 (2006-04-01), Settineri
Marks' Standard Handbook for Mechanical Engineers, 8th ed. New York, McGraw-Hill, 1978. pp. 8-74 to 8-77.
Borg-Warner Inc.
Lorence Richard M.
LandOfFree
Airactuated cone clutch fan drive does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Airactuated cone clutch fan drive, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Airactuated cone clutch fan drive will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4173572