Patent ID: 7244075
Filing Date: 2007-07-17
Classification: E01F

Abstract:
1. A bollard assembly comprising: an elongated housing having a housing first end and a housing second end; a bollard spaced radially inward of said housing and substantially coextensive with said housing, said bollard axially displaceable; a tower spaced radially inward of said bollard and extending within the housing for support of said bollard, said tower having a tower first end and a tower second end, said tower fixed within said housing; a threaded receiver fixed to said tower; a threaded drive shaft suspended within said tower and threadedly received by said threaded receiver for support of said drive shaft and vertical displacement thereof; and a carrier fixed to said bollard at said housing first end, said carrier also fixed to said threaded drive shaft for support of said bollard upon vertical displacement of the bollard, wherein rotation of said threaded drive shaft establishes vertical displacement of said bollard as the threaded drive shaft and the bollard move in unison.