Rotary expansible chamber devices – Working member has planetary or planetating movement – Helical working member – e.g. – scroll
Patent
1986-09-18
1988-03-15
Vrablik, John J.
Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
418 57, 384312, F01C 104, F01C 2102, F16C 1703
Patent
active
047309989
ABSTRACT:
A scroll-type apparatus having a main journal bearing which journals the drive shaft of the apparatus and is capable of pivoting by small angles with two degrees of freedom. The main journal bearing comprises three or more arcuate pads whose inner surfaces journal the drive shaft and which are pivotably supported by a stationary main bearing housing. In a preferred embodiment, each of the pads has a spherical protrusion and two rotation-preventing pins secured to its back surface. The protrusions contact the inner surface of the main bearing housing and pivotably support the pads, while the rotation-preventing pins are inserted into grooves formed on the inner surface of the main bearing housing. When a load is applied to the drive shaft causing it to tilt, the pads of the main journal bearing can tilt along with the drive shaft by pivoting about the points of contact between the spherical protrusions and the inner surface of the main bearing housing, thereby preventing edge loading of the main journal bearing.
REFERENCES:
patent: 1161721 (1915-11-01), Parsons
patent: 4141677 (1979-02-01), Weaver et al.
patent: 4431388 (1984-02-01), Eber et al.
patent: 4473343 (1984-09-01), Hazaki et al.
patent: 4580911 (1986-04-01), Burkhard et al.
patent: 4597676 (1986-07-01), Vohr et al.
Inaba Tsutomu
Kakuda Masayuki
Kimura Tadashi
Morishita Etsuo
Narumiya Hiromu
Mitsubishi Denki & Kabushiki Kaisha
Vrablik John J.
LandOfFree
Scroll-type apparatus having a pivoting main journal 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 Scroll-type apparatus having a pivoting main journal bearing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scroll-type apparatus having a pivoting main journal bearing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1924128