Power return tape
AssigneeCooper Industries, Inc.
InventorsHerman S. Jones, William C. Blackman
Life of this patent
Estimating the term…
Abstract
A measuring device comprises an outer casing and an inner drum mounted on a central hub of the casing. The drum has an innermost rim, an intermediate rim, and an outermost rim, each of the rims having a different diameter. The intermediate and innermost rims are arranged on one side of the drum while the outer rim is arranged on an opposite side of the drum. A tape is wound onto the intermediate rim on one side of the drum while a spring is wound inside the outer rim on the other side of the drum. This side-by-side arrangement of the tape and spring allows a lengthy tape, for example, 50 feet or more, to be quickly returned, compactly stored, and easily carried. A resilient shock-absorbing bumper is also provided around the periphery of the outer casing.
Claims10
A measuring device, comprising:
- a casing having a central hub and an opening therein;
- a drum mounted in the casing on the central hub, said drum comprising a flat central disc, the plane of said disc being normal to the axis of said drum, said disc having an innermost rim, an intermediate rim, and an outermost rim, each of the rims being concentrically mounted on said disc, said intermediate and innermost rims being arranged on one side of said disc and said outermost rim being arranged on an opposite side of said disc;
- a tape having a free end extending through the opening in the casing and having its other end attached at the intermediate rim of the drum, said tape being wound onto the intermediate rim;
- and
- a return spring having one end secured to the central hub of the casing and having its other end secured to the outermost rim of the drum, said return spring being wound inside the outermost rim.
A measuring device including a casing having a central hub, a drum having a plurality of rims mounted on the hub, a tape being wound onto one of said rims, and a return spring being wound inside another of said rims, said tape being mounted on one side of the drum, and said spring being mounted on an opposite side of the drum.
A measuring device comprising a casing, a drum mounted within the casing, a return spring mounted on said drum and a tape mounted on said drum in side-by-side relationship with the return spring, said drum comprising a flat central disc and a plurality of rims concentrically mounted on said disc.
Dependencies are inferred from the claim text.