Spring devices – Vehicle – Mechanical spring and nonresilient retarder
Patent
1996-12-12
1998-11-10
Poon, Peter M.
Spring devices
Vehicle
Mechanical spring and nonresilient retarder
1882662, 474110, F16H 708
Patent
active
058332200
ABSTRACT:
A hydraulic tensioner which has a small number of components and hence can be reduced in size. The hydraulic tensioner includes a plunger 3 slidably fitted in a cylinder disposed in a tensioner body, a reservoir chamber formed in the tensioner body in a lower portion of the cylinder, a check valve permitting flow of an oil in a single direction from the reservoir chamber into the cylinder which is formed as a high pressure chamber, a low pressure chamber formed in the tensioner body exteriorly of the cylinder, an oil passage connecting a bottom of the low pressure chamber to a position between the check valve and the reservoir chamber, and a spring urging the plunger upwardly, wherein the low pressure chamber contains an air layer formed above a surface of the oil held in the lower pressure chamber. The oil passages and check valve enable the oil to flow into the high pressure chamber in a short time and hence efficiently dampen vibrations of the plunger.
REFERENCES:
patent: 4790801 (1988-12-01), Schmidt et al.
patent: 4950209 (1990-08-01), Kawashima et al.
patent: 5383813 (1995-01-01), Odai
patent: 5632474 (1997-05-01), Hayakawa et al.
Fujiwara Toru
Miyake Hiroyuki
Nakakubo Katsuya
Poon Peter M.
Skillman Henry H.
Tsubakimoto Chain Co.
LandOfFree
Hydraulic tensioner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic tensioner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic tensioner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1509191