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US 5,576,521 AGranted
Multiple readout spring scale
AssigneeCreatechnic AG
InventorWerner F. Dubach
Life of this patent
Estimating the term…
Abstract
The invention concerns a spring scale with two tubular housing parts enclosing a spring, which can be slid within one another telescopically, with play, but which are unable to rotate due to their cross-sectional shape.
Claims8
A spring scale comprising
- a tubular upper housing part;
- a tubular lower housing part wherein said tubular upper housing part can slide within said tubular lower housing part telescopically and wherein said tubular upper housing part and said tubular lower housing part are provided having a predetermined cross-sectional shape selected such that said tubular upper housing part and said tubular lower housing part cannot rotate relative to each other and wherein said tubular lower housing part is provided having a lengthwise slot therein;
- a spring having a first end and a second end, the first end of said spring attached to an internal surface of said tubular upper housing part, the second end of said spring attached to an internal surface of said tubular lower housing part;
- an indicator blade, coupled to said upper housing part and disposed such that said indicator blade projects through the lengthwise slot with lateral clearance;
- and
- a transparent cylinder, rotatably mounted on said tubular lower housing part and enclosing said tubular lower housing part, wherein said transparent cylinder displays calibrated readout scales on at least a portion of a first surface thereof.
3 more elements
A spring scale comprising
- an upper housing part;
- a lower housing part wherein said upper housing part can slide within said lower housing part telescopically and wherein said upper housing part and said lower housing part are provided having a predetermined cross-sectional shape selected such that said upper housing part and said lower housing part cannot rotate relative to each other and wherein said lower housing part is provided having a lengthwise slot therein;
- a spring having a first end and a second end, the first end of said spring attached to an internal surface of said upper housing part, the second end of said spring attached to an internal surface of said lower housing part;
- an indicator blade, coupled to said upper housing part and disposed such that said indicator blade projects through the lengthwise slot with lateral clearance;
- and
- a cylinder rotatably coupled to and disposed about at least a portion of said lower housing part.
3 more elements
Dependencies are inferred from the claim text.