Spring devices – Vehicle – Bolster
Patent
1979-10-12
1982-03-09
Kazenske, Edward R.
Spring devices
Vehicle
Bolster
188319, 267 34, 267 61R, F16F 919, B60G 1156
Patent
active
043185355
ABSTRACT:
A rear wheel suspension for motorcycles which comprises a hydraulic damper of telescope type consisting of telescopic inner and outer tubes and a suspension coil spring positioned in these tubes. In order to stabilize the damping characteristics, and at the same time, to prevent the inner end cross section of the inner tube from fouling the suspension coil spring and thereby causing unsatisfactory operation, abnormal noise and other problems, one part of the suspension coil spring, which is located in the outer tube under the condition where the hydraulic damper is extended to the maximum, is made smaller in pitch diameter than the other part, which is located in the inner tube so that the inside working oil flow due to its expansion or compression may be hardly hindered by the part of the suspension coil spring that is located in the outer tube. Furthermore, positioned at one end of the suspension coil spring in series is a jolt-preventive coil spring, which makes it possible, when the hydraulic damper is extended to the maximum to reduce the initial load of the suspension coil spring to zero or close to zero, so that device may give the motorcycle rider an improved feeling of suspension on his ride.
REFERENCES:
patent: 2171185 (1939-08-01), Maier
patent: 2475774 (1949-07-01), Benson
patent: 2902274 (1959-09-01), McIntyre
patent: 3447797 (1969-06-01), Roberts
patent: 3874307 (1975-04-01), Schwam
patent: 4159756 (1979-07-01), Murakami et al.
Jecies Saul
Kayabakogyokabushikikaisha
Kazenske Edward R.
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