Adjustable measuring device

摘要

The moveable dam structure of an adjustable measuring device such as a spoon or scoop has a structure molded of a single material with thin flexible curved edges which fit into the internal walls of the housing to provide increased surface contact without co-molding or other assembly of a separate edge seal onto the moveable dam. The moveable dam is molded in a single step of a single thermoplastic material to give the dam a tapered cross-sectional shape with the inner portion thicker than the outer edges, with curved edges forming angles substantially different from 90° when bearing against the internal walls of the measuring container.

主权项

1. An adjustable measuring device, comprising
a. a body member comprising a housing with a handle, said housing having a wall structure with an inner surface having a curved cross-sectional shape, b. a dam member movably mounted on said body member and having a planar body with curved edges shaped to match said curved cross-sectional shape and form a dam to define an open-top measuring container having a volume variable by positioning said dam in said housing, c. an actuating structure engaged with said dam member and manually operable to move said dam in said housing to change said volume, d. said dam member having an integral outer portion bent to form a seal with said inner surface of said housing when said dam member is thrust against said inner surface, said outer portion being flexible and bearing against said inner surface at an angle substantially different from 90°.