US 4,060,244 AGranted

Retractable anchors for game bases

OwnerRobert E. Grahaminventor

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Abstract

An anchor unit is described for releasably securing bases used in baseball, softball and the like at their appropriate position on a playing field. This unit is normally for permanent installation and yet permits periodic conditioning, e.g., dragging, of the surface of the field. The anchor is useful with any standard base, and that portion which engages the base retracts below the ground level when not in use. The anchor unit is comprised of an elongated hollow tubular body member having one of its ends closed by a cap. The cap is provided with a central aperture which receives a rod which extends into the body member and longitudinally along the longitudinal axis thereof, one end of the rod being in the interior of the body member while the other end of the rod extends outwardly of the body member adjacent the cap and forms a base strap engaging loop. A spacer disk is attached to the end of the rod interiorly of the body member. A helical spring is positioned within the body member, around the rod and between the cap and spacer disk such that the rod is biased inwardly of the body member. In use, the anchor unit is vertically placed slightly below the surface of the playing field with the loop end of the rod exposed for attachment of a base strap for anchoring a base to the anchor unit.

Claims3

Dependent claims

A retractable game base anchor for permanent installation in a vertical orientation beneath the surface of a playing field, said anchor having a portion thereof for extending above said surface to engage a game base when in use and retract below said surface when not in use, which comprises:

a hollow tubular body member for positioning in said vertical orientation beneath said surface;
a closure covering the upper end of said body member when so oriented, said closure being provided with a central aperture;
a rigid cross arm engaged with the lower end of said body member and extending outwardly from opposite sides thereof to aid in stabilizing said body member, when in use, below said playing field surface;
an axially movable rod disposed along the longitudinal axis of said body member and extending through said central aperture, with a first end of said rod being within said body member and a second end of said rod being exterior of said body member, said second end being formed into a loop, a portion of said loop most distant from said body member being a straight section perpendicular to said rod;
a non-sealing spacer disk encircling and fixedly engaged to said first end of said rod interiorly of said body member to maintain said first end of said rod on the longitudinal axis of said body member;
and
an elongated helical spring within said body member having an axis extending along the longitudinal axis of said body member, a first end of said spring engaged with said spacer disk, and a second end engaged with said closure cover whereby said loop is normally retained in a retracted position adjacent said closure but whereby said loop may be elevated above said surface to engage said game base.

4 more elements

Dependencies are inferred from the claim text.