Patent EP0023893A2 successfully refreshed from Google Patents.
EP0023893A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Motor cycle with swinging fork rear suspension
Assignee: Marelli Europe SpA
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Filing: 1980-07-21
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Granted: —
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Expires: 2000-07-21
Abstract
Abstract A motor cycle, with a reliable, sturdy swinging fork rear suspension which allows a reduction in the non-suspended weight of the motor cycle, includes a rotary hydraulic shock absorber (28) which is fixed to the motor cycle frame (10) and has a rotor shaft which constitutes the pivot (12) of the fork (14) on the frame (10). The pivoted end of the fork (14) comprises a pair of appendages (26) which project in the opposite direction to the wheel-bearing arms (16) of the fork (14).
Inventors
- 👤 Leonardo Mangini
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 13:20
CPC Classifications
B; B62; B62K; B62K25/00; B62K25/04; B62K25/28; B62K25/283; B60; B60G; B60G2202/00; B60G2202/20; B60G2202/22; B60G2202/24; B60G2300/00; B60G2300/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
114 words
Motor cycle having a frame (10), a suspension for the rear wheel comprising a fork (14) mounted rotatably on a transverse pivot pin (12) carried by the frame (10), and resilient suspension means (42) and shock absorber means (28) interposed between the fork (14) and the frame (10) of the motor cycle, characterised in that the shock absorber means comprise a single hydraulic rotary shock absorber (28) having its axis parallel to the pivot pin (12) of the fork (14) and including a fixed member (30) fixed to the frame (10) of the motor cycle, and a rotor (32) rotatable relative to the fixed member (30) and driven in rotation by the fork (14).
Claim 2
Dependent Claim
114 words
Motor cycle having a frame (10), a suspension for the rear wheel comprising a fork (14) mounted rotatably on a transverse pivot pin (12) carried by the frame (10), and resilient suspension means (42) and shock absorber means (28) interposed between the fork (14) and the frame (10) of the motor cycle, characterised in that the shock absorber means comprise a single hydraulic rotary shock absorber (28) having its axis parallel to the pivot pin (12) of the fork (14) and including a fixed member (30) fixed to the frame (10) of the motor cycle, and a rotor (32) rotatable relative to the fixed member (30) and driven in rotation by the fork (14).
Claim 3
Dependent Claim
31 words
Motor cycle according to Claim 1, characterised in that the axis of the rotary hydraulic shock absorber (28) coincides with the axis of the pivot pin (12) of the fork (14)
Claim 4
Dependent Claim
128 words
Motor cycle according to Claims 1 and 2, characterised in that the fixed member of the rotary shock absorber (28) which is fixed to the frame (10) of the motor cycle comprises of a cylindrical casing (30) of the shock absorber (28), and in that the fork (14) has two appendages (26) opposite to the arms (16) carrying the spindle (20) of the rear wheel, the two appendages (26) being fixed to the two ends (12a) of the shaft (38) of the rotor (32) of the rotary hydraulic shock absorber (28) projecting from the two ends of the casing (30) of the shock absorber (28), so that the shaft (38) of the rotor (32) of the shock absorber (28) constitutes the pivot pin (12) of the fork (14).
Claim 5
Dependent Claim
56 words
Motor cycle according to Claim 3, characterised in that the two appendages (26) of the fork (14) are fixed to the ends (12a) of the shaft (38) of the rotor (32) of the shock absorber (28) by taper-fitting couplings and in that at least one of the appendages (26) is fixed releasably to the fork (14).
Claim 6
Dependent Claim
32 words
Motor cycle according to Claim 1, characterised in that the axis of the rotary hydraulic shock absorber (28) is spaced from the axis of the pivot pin (12) of the fork (14).
Claim 7
Dependent Claim
26 words
Motor cycle according to Claim 5 characterised' in that the rotary hydraulic shock absorber (28) is positioned above the pivot pin (12) of the fork (14).
Claim 8
Dependent Claim
38 words
Motor cycle according to Claims 5 or 6, characterised in that the axis of the rotary hydraulic shock absorber (28) lies on a substantially vertical plane containing the axis of the pivot pin (12) of the fork (14).
Claim 9
Dependent Claim
79 words
Motor cycle according to one of the Claims 5 to 7, characterised in that the rotor (32) of the rotary hydraulic shock absorber (28) is connected to the fork (14) by a pair of levers (58) fixed to the ends of the shaft (38) of the rotor (32) and a pair of link rods (60) each of which is articulated at one end to the fork (14) and at the other end to one of the two levers (58).
Claim 10
Dependent Claim
35 words
Motor cycle according to one of the preceding claims, characterised in that the resilient suspension means comprise, a single helical spring (42) interposed between the fork (14) and the frame (10) of the motor cycle.
Claim 11
Dependent Claim
50 words
Motor cycle according to Claim 9, characterised in that the two ends of the helical spring (42) react against two plates (44, 46) articulated respectively to the fork (14) and to the frame (10) of the motor cycle about axes parallel to the axis of rotation of the fork (14).
References Cited (Backward Citations)
No citation records indexed.
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