US 5,176,047 AGranted

Tire dismounting tool for large motor vehicles

OwnerDawn Bai, Claude Huanginventors

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Abstract

A tire dismounting tool for large motor vehicles has a long cylindrical housing provided with a plurality of main bodies and covers. The interior of the housing is divided into a plurality of receiving spaces, each of which is provided therein with a drive member for imparting torsion and with a planetary gear. The housing is fastened to a support member of a predetermined length. A torsion of substantial magnitude sufficient to loosen the mounted nut of tire of a heavy motor vehicle can be generated by the product of speed ratios of planetary gears.

Claims4

Dependent claims

A tire dismounting tool for large motor vehicles comprising:

a first cover having axially a through hole and a second receiving space passing through a rear end thereof, with said through hole and said receiving space arranged in sequence from a front end of said first cover;
a first drive member having a disk and a shaft provided at a front segment thereof with a coupling portion, with said disk disposed in said second receiving space of said first cover and with said shaft passing through said through hole of said first cover;
a first main body having axially an eccentric gear hole and a front end fastened to said rear end of said first cover;
a first transmission member comprising a predetermined number of pivots and pinions equal in number to said pivots fastened to a rear end of said disk in such a way that they are spaced apart in a circular manner, said pinions mounted respectively on said pivots in such a manner that they engage said gear hole of said first main body;
a second main body having axially an axial hole progressively becoming larger from a front end thereof and a fourth receiving space passing through a rear end thereof, said second main body fastened at said front end thereof to a predetermined position of a rear end of said first main body;
a second drive member having a disk, a shaft extending from a front end thereof, and a first outer toothed portion passing through said axial hole of said second main body so as to mesh with said pinions of said first transmission member;
a third main body fastened at a front end thereof to said rear end of said second main body and provided therein with a circular inner toothed portion;
a second transmission member comprising a predetermined number of pivots and pinions equal in number to said pivots fastened to a rear end of said disk of said second drive member in such a way that they are spaced apart in a circular manner, said pinions mounted respectively on said pivots in such a manner that they engage said inner toothed portion of said third main body;
a third drive member having a rod, a second outer toothed portion and a rear coupling portion extending respectively from a front end and a rear end thereof, said second outer toothed portion engaging said pinions of said second transmission member;
a second cover having axially and at a rear end thereof an axial hole and fastened at a front end thereof to a rear end of said third main body so as to permit said rear coupling portion of said third drive member to extend beyond said axial hole;
and
a support member of slender rod-like construction having a total length adjustable in accordance with the topographical features of the ground, with its inner end fastened to a predetermined position of a periphery of said first main body.

9 more elements

Dependencies are inferred from the claim text.

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Abstract

A tire dismounting tool for large motor vehicles comprising:

a first cover having axially a through hole and a second receiving space passing through a rear end thereof, with said through hole and said receiving space arranged in sequence from a front end of said first cover;
a first drive member having a disk and a shaft provided at a front segment thereof with a coupling portion, with said disk disposed in said second receiving space of said first cover and with said shaft passing through said through hole of said first cover;
a first main body having axially an eccentric gear hole and a front end fastened to said rear end of said first cover;
a first transmission member comprising a predetermined number of pivots and pinions equal in number to said pivots fastened to a rear end of said disk in such a way that they are spaced apart in a circular manner, said pinions mounted respectively on said pivots in such a manner that they engage said gear hole of said first main body;
a second main body having axially an axial hole progressively becoming larger from a front end thereof and a fourth receiving space passing through a rear end thereof, said second main body fastened at said front end thereof to a predetermined position of a rear end of said first main body;
a second drive member having a disk, a shaft extending from a front end thereof, and a first outer toothed portion passing through said axial hole of said second main body so as to mesh with said pinions of said first transmission member;
a third main body fastened at a front end thereof to said rear end of said second main body and provided therein with a circular inner toothed portion;
a second transmission member comprising a predetermined number of pivots and pinions equal in number to said pivots fastened to a rear end of said disk of said second drive member in such a way that they are spaced apart in a circular manner, said pinions mounted respectively on said pivots in such a manner that they engage said inner toothed portion of said third main body;
a third drive member having a rod, a second outer toothed portion and a rear coupling portion extending respectively from a front end and a rear end thereof, said second outer toothed portion engaging said pinions of said second transmission member;
a second cover having axially and at a rear end thereof an axial hole and fastened at a front end thereof to a rear end of said third main body so as to permit said rear coupling portion of said third drive member to extend beyond said axial hole;
and
a support member of slender rod-like construction having a total length adjustable in accordance with the topographical features of the ground, with its inner end fastened to a predetermined position of a periphery of said first main body.

9 more elements