Patent ID: 7232962
Filing Date: 2007-06-19
Classification: G01G

Abstract:
1. A mobile bed scale for a hospital bed, said hospital bed having a supporting frame, and having an undercarriage interior to said supporting frame extending below said supporting frame, comprising: a mobile base frame moved on a planar surface; said mobile base frame having a means for rolling on said planar surface; a horizontal bed support to be slid under a hospital bed sufficiently large to stably support said supporting frame of such hospital bed when such horizontal bed support is raised; a lifting apparatus for elevating said horizontal bed support with minimal horizontal displacement of a hospital bed being lifted; said lifting apparatus for elevating said horizontal bed support being mounted on said mobile base and being mounted generally beneath and adjacent to said horizontal bed support; said horizontal bed support, said lifting apparatus, and said mobile base frame being sufficiently low above said planar surface on which said mobile base frame is moved to be slid under a hospital bed; said horizontal bed support having an aperture to accommodate said undercarriage of said hospital bed; said lifting apparatus for elevating said horizontal bed support having a central lifting axis defined by a line perpendicular to said horizontal bed support, said line being located approximately centered on all moments of said horizontal bed support when a hospital bed is on said horizontal bed support; a power source for causing said lifting apparatus to elevate said horizontal bed support situated laterally to said central lifting axis; said power source being mounted on said mobile bed scale; said power source for causing said lifting apparatus to elevate said horizontal bed support, and said horizontal bed support, being adjustably operable to a raised position by a human from a standing position; said horizontal bed support having a weight sensing means; said weight sensing means being at least three piezoelectric sensors; said weight sensing means being connected by a data transmission means to a display means; said display means being mounted on said mobile base frame on an arm extending generally upwards from said mobile base frame to permit visual perception of said display means by a human in a standing position.