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US 4,381,054 AGranted
Multidirectional board support
AssigneeHenwebcor, Incorporated
InventorDonald D. Rumpel
Life of this patent
Estimating the term…
Abstract
A board support is described that can be mounted to support a board for free multidirectional movement in relation to a woodworking machine or tool such as a saw. The support includes a plurality of spherical rollers cradled by narrow, upright ribs on a base. The base, ribs and portions of the rollers are enclosed within a removable cover. The rollers project through holes in the cover that are positioned so their circular peripheries will not touch the rollers.
Claims9
A multi-directional board support comprising:
- an elongated base;
- intersecting upright ribs on the base, having semicircular indentations centered at the points of intersection of the ribs, forming semi-spherical cradles;
- cleanout holes formed through the base at the points of intersection of the ribs;
- a spherical roller for each of the semi-spherical cradles, releasably receivable in said cradle for free rotation therein about its center;
- a cover releasably received over the base and rollers, having circular openings formed therein corresponding with the respective cradles with each opening having a circular periphery with a diameter less than that of the rollers;
- means for releasably mounting the cover to the base with a portion of each roller projecting through a corresponding circular cover opening without the periphery of the opening engaging the roller, to enable the roller to freely rotate about its center;
- and
- spacer means between the cover and base for positioning the cover relative to the base to space the openings over the rollers and cover the ribs, with the opening peripheries spaced clear of the rollers and with the rollers projecting through the openings beyond the cover.
5 more elements
A multi-directional board support comprising:
- an elongated base;
- intersecting upright ribs on the base, having semicircular indentations centered at the points of intersection of the ribs, forming semi-spherical cradles with open angular gaps between adjacent ribs;
- cleanout holes formed through the base at the points of intersection of the ribs;
- a spherical roller for each of the semi-spherical cradles, releasably receivable in said cradle for free rotation therein about its center;
- wherein surfaces of the ribs defining the semicircular indentations are engaged uniformly against the surface of the rollers so that edges of the indentation surfaces will wipe the rollers clean as they are rotated;
- a cover releasably received over the base and rollers, having circular openings formed therein corresponding with the respective cradles with each opening having a circular periphery with a diameter less than that of the rollers;
- and
- means for releasably mounting the cover to the base with a portion of each roller projecting through a corresponding circular cover opening without the periphery of the opening engaging the roller, to enable the roller to freely rotate about its center.
5 more elements
Dependencies are inferred from the claim text.