Means for fastening a driver protection screen on the front of a motorcycle frame

Claim 2

Fastening for a driver protection screen to the front of a motorcycle frame having a pivot shaft for handle bars, comprising: a pivot connection fixed to the screen and consisting of a pivot element fixed to move intergrally with the handle bars and disposed coaxially to their pivot shaft to support and orient the screen axially in the plane of symmetry of the motorcycle frame, and at least one brace fastening the screen to the motorcycle frame and locking it transversely in relation thereto in such position that the planes of symmetry of the said screen and frame remain at least approximately in coincidence regardless of the angular position of the handle bars relative to the frame; the pivot connection consisting of a swivel whose pivot forms a ring provided with a spherical peripheral bearing which is blocked on the pivot shaft about which the handle bars pivot on the frame; and the pivot being completed by a coaxial bolt designed to replace on the threaded end of the pivot shaft of the handle bars the bolt which normally retains it axially in the sleeve of the frame acting as a bearer therefor.

Claim 3

The fastening as in claim 1, in which the pivot bolt consists of the assembly of two elements comprising a ring having a peripheral roller or ball bearing for th pivot, and a bolt provided with a threaded coaxial shank on which the said ring is engaged and blocked by at least one nut.

Claim 4

The fastening as in claim 2, in which the threaded shank is tubular to permit passage of the clamping bolt of a steering damper and acts as an end abutmenf for the knob of the said damper.

Claim 5

Fastening for a driver protection screen to the front of a motorcycle frame having a pivot shaft for handle bars, compprising: a pivot connection fixed to the screen an consisting of a pivot element fixed to move integrally with the handle bars and disposed coaxially to their pivot shaft to support and orient the screen axially in the plane of symmetry of the motorcycle frame, and at least one brace fastening the screen to the motorcycle frame and locking it transversely in relation thereto in such position that the planes of symmetry of the said screen and frame remain at least approximately in coincidence regardless of the angular position of the handle bars relative to the frame; the pivot connection being provided at the end of the substantially vertical portion of a tube which curves above the handle bars and is inclined downwardly and forwardly for connection by a bracket to a transverse support plate located near the top of the screen; the bearing of the connection pivot comprising a threaded extension, and the lower end of the vertical portion of the bent tube carrying a transverse ring threadly engaging and supporting said threaded extension in one of a number of selectible axial positions between which the extension can be moved forwardly or backwardly in the plane of symmetry of the said tube.

Claim 6

Fastening for a driver protection screen to the front of a motorcycle frame having a pivot shaft for handle bars, compprising: a pivot connection fixed to the screen an consisting of a pivot element fixed to move integrally with the handle bars and disposed coaxially to their pivot shaft to support and orient the screen axially in the plane of symmetry of the motorcycle frame, and at least one brace fastening the screen to the motorcycle frame and locking it transversely in relation thereto in such position that the planes of symmetry of the said screen and frame remain at least approximately in coincidence regardless of the angular position of the handle bars relative to the frame; the pivot connection being provided at the end of the substantially vertical portion of a tube which curves above the handle bars and is inclined downwardly and forwardly for connection by a bracket to a transverse support plate located near the top of the screen; the bearing of the connection pivot comprising a threaded extension, and the lower end of the vertical portion of the bent tube carrying a transverse ring threadly engaging and supporting said threaded extension in one of a number of selectible axial positions between which the extension can be moved forwardly or backwardly in the plane of symmetry of the said tube.

Claim 7

Improvements in fastening of a fairing at the front of a motorcycle frame having a steering axle for movement integrally with a handle bar utilizing a pivot bearing comprising two revolving parts which are fixed, one on said fairing and the other on a part moving integrally with said handle bar, in such a manner that the mutual pivot center will lie on the steering axle line, the fairing being futher prevented from turning about said bearing with respect to the frame by at least one brace fastening, wherein said improvements comprise, on said revolving part of the pivot bearing which is fixed on said part moving integrally with the handle bar, fastening means arranged for selfcentering of the pivot center by fixing said part on one of the two circular shaped ends of the steering axle.

Claim 8

Improvements in fastening of a fairing at the front of a motorcycle frame having a steering axle for movement integrally with a handle bar utilizing a pivot bearing comprising two revolving parts which are fixed, one on said fairing and the other on a part moving integrally with said handle bar, in such a manner that the mutual pivot center will lie on the steering axle line, the fairing being futher prevented from turning about said bearing with respect to the frame by at least one brace fastening, wherein said improvements comprise, on said revolving part of the pivot bearing which is fixed on said part moving integrally with the handle bar, fastening means arranged for selfcentering of the pivot center by fixing said part on one of the two circular shaped ends of the steering axle.

Claim 9

Improvements as cLaimed in claim 5, useful on a motorcycle having a steering axle with at least one threaded end and in which said fastening means forms a nut adapted to be screwed onto said threaded end thereby replacing the usual adjusting nut generally provided thereon to retain it axially in the frame of the motorcycle.

Claim 10

Improvements as claimed in claim 5, in which said pivot bearing is a ball and socket bearing.

Claim 11

Improvements as claimed in claim 5, in which fastening means of the revolving part of the pivot bearing which is to be fixed on one of the two circular ends of the steering axle comprises a threaded coaxial shank for precise adjustment of said part coaxially along said steering axle.

Claim 12

Improvement as claimed in claim 5, in which fastening means of the revolving part of the pivot bearing which is to be fixed on the fairing comprises a threaded shank in substantially radial extension with respect to the steering axle for precise adjustment transverse to the latter.

Claim 13

Improvements in fastening of a fairing to the front of a motorcycle frame having a steering axle for moving integrally with a handle bar, utilizing a pivot bearing, the two revolving parts of which are to be fixed, one on said fairing and the other on a part moving with said handle bar in such a manner that the mutual pivot center will lie on the steering axle line, the fairing being further prevented from turning about said bearing with respect to the frame by a brace fastening; said improvements comprising the arrangement of said pivot bearing as a ball, and socket joint, and the arrangement of the brace as a U-shaped rod, whose two parallel branches extend along the internal face of parallel lateral deflectors of said fairing, each said branch sliding in grip-head mounted for free rotation on said corresponding lateral deflector, and the main intermediate portion of said brace sliding and rotating freely in at least one grip-clamp adapted to be also clamped around a substantially perpendicular bar integral with the motorcycle frame, said grip-heads and grip-clamps having further means to bolt them up firmly against sliding and rotation on the parts they connect together.

Claim 14

Improvements in fastening of a fairing to the front of a motorcycle frame having a steering axle for moving integrally with a handle bar, utilizing a pivot bearing, the two revolving parts of which are to be fixed, one on said fairing and the other on a part moving with said handle bar in such a manner that the mutual pivot center will lie on the steering axle line, the fairing being further prevented from turning about said bearing with respect to the frame by a brace fastening; said improvements comprising the arrangement of said pivot bearing as a ball, and socket joint, and the arrangement of the brace as a U-shaped rod, whose two parallel branches extend along the internal face of parallel lateral deflectors of said fairing, each said branch sliding in grip-head mounted for free rotation on said corresponding lateral deflector, and the main intermediate portion of said brace sliding and rotating freely in at least one grip-clamp adapted to be also clamped around a substantially perpendicular bar integral with the motorcycle frame, said grip-heads and grip-clamps having further means to bolt them up firmly against sliding and rotation on the parts they connect together.