초록 ▼

A wheel is disclosed that has a built-in hub for receiving an axle. The wheel includes an annular outer rim, and a pair of circular webs that are received in the rim. Each of the webs includes an inner annular ring. The annular ring on one of the webs defines a through-passageway, and the annular ri

A wheel is disclosed that has a built-in hub for receiving an axle. The wheel includes an annular outer rim, and a pair of circular webs that are received in the rim. Each of the webs includes an inner annular ring. The annular ring on one of the webs defines a through-passageway, and the annular ring on the other web defines an aperture having an open end that communicates with the passageway and an opposite closed end. The closed end of the other web is defined by a wall of the other web. The wall of the other web, together with the annular ring on the other web, define a built-in hub for limiting insertion of the axle onto the wheel and for covering the axle. The need for a separate hub component that can fall off and become lost is thereby eliminated.

대표청구항 ▼

A wheel having a built-in hub for receiving an axle, comprising a cylindrical hollow rim having an outside surface and an inside surface and a pair of sides, said rim defining an opening having an axis, a first disk that is received in said rim, said first disk having an outside circumferential surf

A wheel having a built-in hub for receiving an axle, comprising a cylindrical hollow rim having an outside surface and an inside surface and a pair of sides, said rim defining an opening having an axis, a first disk that is received in said rim, said first disk having an outside circumferential surface that engages said inside surface of said rim, said first disk defining a passageway having an axis at the center of said first disk, wherein said passageway extends through said first disk and terminates at a pair of opposing open ends, a second disk that is received in said rim, said second disk having an outside circumferential surface, said second disk defining an aperture having an axis at the center of said second disk, wherein said aperture has an axis coinciding with the axes through said passageway in said first disk and said opening in said rim, said second disk having a wall that defines a closed end of said aperture, said aperture also having an open end, said aperture communicating with said passageway, said second disk including an annular shoulder spaced radially from said aperture defining a cavity adjacent said aperture, means for mounting said first disk and said second disk to said rim, said axle being received in said passageway in said first disk and said aperture in said second disk, and fastening means positioned between said open end of said second disk and one of the open ends of said first disk for engaging said axle and retaining said axle in position within said passageway and said aperture, whereby the portion of said second disk that define said aperture and said wall comprise a hub for said wheel, said hub limiting the insertion of said axle into said second disk and covering an end of said axle said fastening means comprising tooth means whereby said axle is insertable into said hub and through said fastening means and is lockingly gripped and retained within said hub by said tooth means. A wheel, comprising an annular outer rim having an outside surface and an inside surface and a pair of sides, said rim defining an opening having an axis extending therethrough, a first circular web that is received in said outer rim, said first web having an outside circumferential surface that engages said inside surface of said rim, a second circular web that is received in said rim, said second web having an outside circumferential surface that engages said inside surface of said outer rim, means for mounting said first web and said second web to said outer rim, comprising male means on said first web and on said second web, and female means on said outer rim, said male means being engageable with said female means, wherein said male means comprises tab means projecting radially outwardly from said outside surfaces of said first web and said second web, and said female means comprises slot means extending radially inwardly into said inside surface of said outer rim, said tab means being lockably receivable in said slot means, said first web having a wall extending generally radially inwardly from said outside circumferential surface of said first web, and said second web has a wall extending generally radially inwardly from said outside circumferential surface of said second web, said walls each have an inside surface that faces the inside surface of the wall on the other web, the wall on one of said webs having rib means protruding outwardly from the inside surface thereof, said rib means being spaced from the outside surface of said one web and adapted to engage the inside surface of the wall on the other web, whereby one of said webs is mounted to said outer rim by sliding within said outer rim until said tab means is received in said slot means, and the other of said webs is mounted to said outer rim by sliding within said outer rim until there is engagement between said rib means and the wall of the other web, whereupon the outer portion of the other web flexes about the points of engagement between said rib means and said wall on the other web until said tab means on said other web is received in said slot means.