초록 ▼

There is disclosed a weight transfer roller apparatus including a barrel type housing formed on one extremity with a radially inwardly projecting retaining flange forming a circular protrusion opening. A roller ball is received within the bore of such barrel, has one side projecting from such openin

There is disclosed a weight transfer roller apparatus including a barrel type housing formed on one extremity with a radially inwardly projecting retaining flange forming a circular protrusion opening. A roller ball is received within the bore of such barrel, has one side projecting from such opening, and has its opposite side nested on an annular high lubricity plastic ring formed with a bearing seat defining a sector of a sphere corresponding with the spherical roller. The annular bearing ring rests on a retainer secured to such housing whereby the housing may be mounted in a weight transfer platform and loads passing thereover will weight downwardly on such ball to be carried by the bearing ring. Preferably, the ball, annular bearing ring, and retainer are telescopically received in the bore of the barrel with the retainer being selectively removable for removal of the bearing and ball for replacement thereof upon deterioration or damage.

대표청구항 ▼

Weight transfer roller apparatus for mounting on a platform defined by a wall having a through wall bore formed therein and comprising: a housing including an elongated barrel formed to be received telescopically in said bore and further formed with a ball-receiving bore and having oppositely dispos

Weight transfer roller apparatus for mounting on a platform defined by a wall having a through wall bore formed therein and comprising: a housing including an elongated barrel formed to be received telescopically in said bore and further formed with a ball-receiving bore and having oppositely disposed first and second extremities, said first extremity being formed with an annular radially outwardly flared flange for overlying the marginal edges of one end of said wall bore and said barrel being further formed with exterior threads; an interior threaded nut for screwing onto said second extremity of said barrel; a radially inwardly projecting retaining flange formed on said first extremity and defining a circular protrusion opening concentric with said ball-receiving bore; a cylindrical low friction thrust bearing means disposed intermediately in said ball-receiving bore and formed with a spherically-shaped concave bearing seat opening toward said one extremity; a spherical roller ball received in said ball-receiving bore and nested on one side directly on said bearing seat and projecting on its opposite side from said protrusion opening; and, retainer means in said second extremity of said bore and engaging said barrel to hold said roller ball captive between said retaining flange and bearing means whereby said housing can be affixed to said platform with said one side of said roller ball projecting from said protrusion opening and when a weight is applied to said ball it will be substantially uniformly supported by such spherically-shaped concave bearing seat.