초록 ▼

A motorized vehicle having a wheel retraction apparatus, comprising: a plurality of rear wheels and at least one front wheel; a lower chassis having a foot surface mounted thereon; and a wheel retraction apparatus mechanically connected to said lower chassis and set to extract and retract said plura

A motorized vehicle having a wheel retraction apparatus, comprising: a plurality of rear wheels and at least one front wheel; a lower chassis having a foot surface mounted thereon; and a wheel retraction apparatus mechanically connected to said lower chassis and set to extract and retract said plurality of rear wheels from and towards said lower chassis and to fixate said plurality of rear wheels in a plurality of different widths from one another; wherein a distance between an axis passing through the centers of said plurality of rear wheels and said at least one front wheel is reduced when said plurality of rear wheels are retracted towards said lower chassis.

대표청구항 ▼

1. A motorized vehicle having a wheel retraction apparatus, comprising: a plurality of rear wheels and at least one front wheel;a lower chassis having a longitudinal axis and a foot surface mounted thereon; anda wheel retraction apparatus which is mechanically connected to said lower chassis and set

1. A motorized vehicle having a wheel retraction apparatus, comprising: a plurality of rear wheels and at least one front wheel;a lower chassis having a longitudinal axis and a foot surface mounted thereon; anda wheel retraction apparatus which is mechanically connected to said lower chassis and set to extract and retract said plurality of rear wheels from and towards said lower chassis by moving said plurality of rear wheels along diagonals which converge towards a point on said longitudinal axis, said wheel retraction apparatus is configured to fix said plurality of rear wheels in a plurality of different widths from one another;an upper chassis for supporting a seat;at least one of lever; anda bearing which mechanically connects between said upper chassis and said lower chassis and at least one lever;wherein a distance between an axis passing through the centers of said plurality of rear wheels and said at least one front wheel does not increase when said plurality of rear wheels are retracted towards said lower chassis;wherein each said at least one lever mechanically connect between said upper chassis and said wheel retraction apparatus and the bringing of said upper chassis towards said lower chassis pulls the lever and induces a retraction of said plurality of rear wheels by said wheel retraction apparatus. 2. The motorized vehicle of claim 1, further comprising an upper chassis, wherein said upper chassis is connected to said lower chassis. 3. The motorized vehicle of claim 1, wherein said lower chassis has a longitudinal axis and a distance between each said rear wheel and said longitudinal axis is reduced by said retraction. 4. The motorized vehicle of claim 3, wherein said lower chassis has a longitudinal axis, a distance between each said rear wheel and said longitudinal latitudinal axis and between each said rear wheel and said longitudinal axis is simultaneously reduced by said retraction. 5. The motorized vehicle of claim 1, wherein said wheel retraction apparatus comprises: a plurality of wheel arms each connected to another of said plurality of rear wheels; andat least one actuator, each having at least one retraction link which are connected to said plurality of wheel arms;wherein said lower chassis has a longitudinal axis, where a linear pulling of said at least one retraction links induces a simultaneous diagonal movement of said plurality of rear wheels in relation to said longitudinal axis. 6. The motorized vehicle of claim 5, wherein said at least one of retraction links are spread in at least one of a V shaped arrangement and a Y shaped arrangement. 7. The motorized vehicle of claim 1, wherein said plurality of rear wheels remain essentially parallel to one another during said retraction. 8. The motorized vehicle of claim 1, wherein said seat comprises: a seat base, a backrest and a seat bearing connecting between said seat base and said backrest. 9. The motorized vehicle of claim 8, wherein said lever is a non linear lever having an angle between 100 degrees and 170 degrees. 10. The motorized vehicle of claim 8, further comprising an arm which mechanically connects between said backrest and said lever. 11. The motorized vehicle of claim 10, wherein a mechanical connection of said arm comprises a multiplicity of arms connected by a multiplicity of hinges. 12. The motorized vehicle of claim 10, wherein said wheel retraction apparatus comprises an actuator having a tunnel and upon folding of said seat said lever moves along said tunnel and said actuator moves along said lower chassis thereby lowering said seat. 13. The upper chassis of claim 8, further comprising a lock between said back rest and said seat base and a release button in said back rest, wherein said release button allows said seat base and said back rest to fold toward each other and said lock is re-engaged when said back rest and said seat base are parallel in a folded position. 14. The motorized vehicle of claim 1 further comprising a backrest, wherein said upper chassis has at least one upper chassis road and said backrest has at least one backrest channel which encircles said at least one upper chassis road and a folding action pulls said back rest to glide on said upper chassis road to essentially cover said upper chassis road. 15. The upper chassis of claim 1, further comprising an upper chassis lock between said upper chassis and said lower chassis; wherein a position of said upper chassis relative to the position of said lower chassis is statically maintained when said upper chassis lock is locked. 16. The lock of claim 15, further comprising an actuator and a thread which connects between said seat and said actuator, wherein moving said thread does at least one of locking and unlocking said upper chassis lock. 17. The lock of claim 15, further comprising an actuator, wherein said rear lower chassis further comprises a plurality of rear lower chassis apertures and said upper chassis lock comprises a disc having at least one pin and said disc is mounted on said actuator and said at least one pin fits into said plurality of rear lower chassis apertures. 18. The motorized vehicle of claim 1, wherein said lower chassis has a front lower chassis and a rear lower chassis and a lower chassis bearing connects said front lower chassis with said rear lower chassis. 19. A motorized vehicle having a wheel retraction apparatus, comprising: a plurality of rear wheels and at least one front wheel;a lower chassis having a longitudinal axis and a foot surface mounted thereon; anda wheel retraction apparatus which is mechanically connected to said lower chassis and set to extract and retract said plurality of rear wheels from and towards said lower chassis by moving said plurality of rear wheels along diagonals which converge towards a point on said longitudinal axis said wheel retraction apparatus is configured to fix said plurality of rear wheels in a plurality of different widths from one another; wherein a distance between an axis passing through the centers of said plurality of rear wheels and said at least one front wheel does not increase when said plurality of rear wheels are retracted towards said lower chassis; wherein said wheel retraction apparatus comprises:a plurality of wheel arms each connected to another of said plurality of rear wheels; andat least one actuator, each having at least one retraction link which are connected to said plurality of wheel arms;wherein said lower chassis has a longitudinal axis, where a linear pulling of said at least one retraction links induces a simultaneous diagonal movement of said plurality of rear wheels in relation to said longitudinal axis;wherein the movement of said at least one of retraction links is limited by a Y shaped track. 20. A motorized vehicle having a wheel retraction apparatus, comprising: a plurality of rear wheels and at least one front wheel;a lower chassis having a longitudinal axis and a foot surface mounted thereon; anda wheel retraction apparatus which is mechanically connected to said lower chassis and set to extract and retract said plurality of rear wheels from and towards said lower chassis by moving said plurality of rear wheels along diagonals which converge towards a point on said longitudinal axis, said wheel retraction apparatus is configured to fix said plurality of rear wheels in a plurality of different widths from one another; wherein a distance between an axis passing through the centers of said plurality of rear wheels and said at least one front wheel does not increase when said plurality of rear wheels are retracted towards said lower chassis; wherein said wheel retraction apparatus comprises:a plurality of wheel arms each connected to another of said plurality of rear wheels; andat least one actuator, each having at least one retraction link which are connected to said plurality of wheel arms;wherein said lower chassis has a longitudinal axis, where a linear pulling of said at least one retraction links induces a simultaneous diagonal movement of said plurality of rear wheels in relation to said longitudinal axis; wherein said at least one of retraction links position is at least one of exterior to said lower chassis, interior to said lower chassis and integral within said lower chassis.