Electronic bath scale
AssigneeSunbeam Corporation
InventorFrancesco L. Carnevale
Life of this patent
Estimating the term…
Abstract
A bathroom platform scale is disclosed having a reinforced plastic base and platform. The platform is carried by a pair of triangular-shaped actuation levers which directly engage a single transducer, such as a strain gauge, centrally located in the base, to sense the weight on the platform. Such an arrangement allows for a relatively compact scale. The triangular-shaped levers are supported by knife edge bearings which define a fulcrum. An integrally formed tongue extending from an apex from each of the triangular-shaped levers applies the weight distributed on the platform to the transducer. The triangular-shaped actuation levers are also self-aligning, thus facilitating assembly of the scale.
Claims24
A platform scale comprising:
- a platform;
- a generally rectangular base defining four corners, mechanically coupled to said platform;
- and
- means disposed in said based for providing a signal representative of the weight on the platform including a transducer and a pair of actuation levers pivotally mounted and supported at said four corners within said base, defining fulcrums generally parallel to each other, wherein each of said actuation levers directly engages said transducer.
A platform scale comprising:
- a platform;
- a base mechanically coupled to said platform;
- and
- means disposed in said base for providing a signal representative of the weight on the platform including a transducer and a pair of actuation levers pivotally mounted within said base, defining fulcrums generally parallel to each other wherein said actuation levers directly engage said transducer;
- and wherein said transducer is cantilever mounted approximately at the center of said base.
A thin platform scale comprising a molded plastic platform being generally rectangular in shape having a flat load receiving upper surface and a lower surface having integrally molded reinforcing ribs, a molded plastic base which is generally rectangular in shape defining four corners and substantially coextensive with said platform, a pair of force collecting levers each being mounted on said base for pivotal movement about one elongated edge of said base and supported at said four corners within said base, each said lever having an apex positioned near the center of said base, a single transducer at the center of said base and engaged by said apex of each lever and producing an output signal proportional to the load on said platform, metal inserts in said lower surface of said platform in engagement with said levers to support said platform and to apply forces on said levers pivoting said levers about said elongated edges, wherein said force collecting levers are triangular in shape.
A platform scale comprising:
- a platform;
- a generally rectangular base defining four corners, mechanically coupled to said platform;
- a single transducer centrally located in said base for producing an output signal proportional to the weight on said platform;
- a pair of actuation levers, supported at said four corners within said base, for pivotal movement about axes generally parallel to each other and disposed about opposite edges of said base for engaging said transducer;
- and
- a display electrically coupled to said transducer for displaying the amount of weight on the platform.
A platform scale having a platform, a base mechanically coupled thereto and means disposed in said scale including a transducer for providing a signal representative of the weight on the platform wherein the improvement comprises cavities formed in said platform and said base for receiving said signal providing means such that the height of said scale is approximately the height of said transducer.
Dependencies are inferred from the claim text.