EP0505598A1
Expired / Lapsed
EP
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Bicycle with folding frame
Assignee: Idit International Design NV
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Filing: 1991-03-28
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Granted: —
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Expires: 2011-03-28
Abstract
Abstract Bicycle with folding frame having a frame defining a lower longitudinal member (2) which rotatably supports a rear wheel (3) and a pedal crank shaft (4). A saddle upright (11) and a handlebar upright (12) are hinged to the lower longitudinal member (2), are substantially parallel to one another and are joined by an upper cross-member (13) which is substantially parallel to the lower longitudinal member (2) and is hinged to the uprights (11,12) to provide an articulated-parallelogram coupling. A steering sleeve (20) is articulated to the handlebar upright (12), supports a front wheel (25), and is associated with a handlebar (27). A locking bar (30) for retaining the frame in operating position is furthermore provided and is arranged diagonally to the articulated parallelogram.
Inventors
- 👤 Richard Sapper
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 12:31
CPC Classifications
B; B62; B62K; B62K15/00; B62K15/006; B62K15/008
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
140 words
Bicycle with folding frame, particularly for use in city centers, characterized in that it comprises a frame which has a lower longitudinal member (2) which rotatably supports the rear wheel (3) and the pedal crank shaft (4), a saddle upright (11) and a handlebar upright (12) being hinged to said lower longitudinal member (2), said uprights (11,12) being mutually substantially parallel and being joined by an upper cross-member (13) which is substantially parallel to said lower longitudinal member (2) and is hinged to said uprights (11,12) to provide an articulated-parallelogram coupling, a steering sleeve (20) being articulated to said handlebar upright (12), said sleeve supporting the front wheel (25) and being associated with the handlebar (27), a locking bar (30) being furthermore provided for retaining said frame in operative position, said bar (30) being arranged diagonally to said articulated parallelogram.
Claim 2
Dependent Claim
52 words
Bicycle with folding frame, according to claim 1, characterized in that said locking bar (30) is constituted by an outer telescoping tubular element (31) and by an inner telescoping tubular element (32) which are mutually slidable, locking means (35) being furthermore provided for locking said bar (30) at the required useful length.
Claim 3
Dependent Claim
55 words
Bicycle with folding frame, according to the preceding claims, characterized in that said saddle upright (11) is arranged to the side of said longitudinal member (2), to the side of said cross-member (13) and in the same plane as said handlebar upright (12), said locking bar (30) being superimposed on said lower longitudinal member (2).
Claim 4
Dependent Claim
43 words
Bicycle with folding frame, according to one or more of the preceding claims, characterized in that said lower longitudinal member (2) has a box-like configuration which contains an assembly (5-10) for transmitting the motion from said pedal cranks to said rear wheel (3).
Claim 5
Dependent Claim
79 words
Bicycle with folding frame, according to one or more of the preceding claims, characterized in that said motion transmission assembly has a first crown wheel (5) keyed on said pedal crank shaft (4) which meshes with a first chain (6) which engages with a first pinion (7) rigidly rotationally associated with a second crown wheel (8) which engages a second chain (9) which wraps around a second pinion (10) rigidly associated with the hub of said rear wheel (3).
Claim 6
Dependent Claim
38 words
Bicycle with folding frame, according to one or more of the preceding claims, characterized in that said steering sleeve (20) is rotatably supported by a pair of raised portions defined at the end of said handlebar upright (12).
Claim 7
Dependent Claim
74 words
Bicycle with folding frame, according to one or more of the preceding claims, characterized in that said steering sleeve (20) is coupled to the handlebar shaft (26), said handlebar (27) being associated with the related shaft (26) with the possibility of rotating about an axis which is perpendicular to the handlebar shaft (26) to arrange said handlebar (27) in a position which is parallel to the handlebar shaft (26) when the bicycle is folded.
Claim 8
Dependent Claim
43 words
Bicycle with folding frame, according to one or more of the preceding claims, characterized in that said frame assumes, in folded position, an elongated configuration with said uprights (11,12) and said locking bar (30) folded substantially parallel to said lower longitudinal member (2).
References Cited (Backward Citations)
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