Displacement level sensor and seal and pivot assembly for displacement level sensor

摘要

A seal and pivot assembly for a displacement level assembly includes a pivot base, an annular seal and a pivot body. The pivot base includes a cylindrical base member with an axial end surface defining first and second V-shaped grooves. The pivot body includes a cylindrical body member with first and second pivot body arms extending radially outward from opposite sides of the cylindrical body member. The first and second pivot body arms include first and second knife edges, respectively, that are in line contact with the first and second grooves, respectively, of the pivot base such that the pivot body can pivot relative to the pivot base, as well as uniformly distribute unbalanced forces applied to the pivot body across the entirety of the knife edges.

主权项

1. A seal and pivot assembly for a displacement lever assembly, the seal and pivot assembly comprising:
a pivot base comprising a cylindrical base member disposed on a longitudinal axis, an axial end surface, and a cylindrical through-bore extending through the cylindrical base member along the longitudinal axis, the axial end surface defining first and second grooves, each having a semi-circular shaped cross-section with a radius about a first transverse axis of the pivot base that is perpendicular to the longitudinal axis; an annular seal member carried within the through-bore of the cylindrical base member of the pivot base; a pivot body comprising a cylindrical body member disposed on the longitudinal axis, first and second pivot body arms extending radially outward from opposite sides of the cylindrical body member, and a cylindrical through-bore extending through the cylindrical body member along the longitudinal axis coaxially with the cylindrical through-bore of the cylindrical base member, the first and second pivot body arms including third and fourth grooves, respectively, each having a semi-circular shaped cross-section with a radius about a second transverse axis; first and second cylindrical barrel pivots having longitudinal axes disposed on a third transverse axis, the first barrel pivot disposed between the first and third grooves and the second barrel pivot disposed between the second and fourth grooves to facilitate pivoting movement of the pivot body relative to the pivot base.