Patent · US Expired

Building curtain wall mullion and sill assembly

US6993873B2 · kind B2 · utility

35Cited by

37References

9Claims

0Family size

Assignee

BUTLER MANUFACTURING COMPANY · US

Inventors

Lawrence F. Biebuyck · Dallas, US
James P. Clark · Terrell, US
Stanley J. Mayhew · Terrell, US

Key dates

Filing date	Mar 12, 2003
Grant date	Feb 7, 2006
Priority date	—
Expiry date	Oct 10, 2023

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE04B2/96
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

Disclosed is a curtain wall assembly used for building exteriors. The curtain wall system includes a first vertical mullion operable to attach to a first sill member and a second vertical mullion operable to interlock with the first vertical mullion. A mullion cap may be attached to a bottom surface of at least one of the vertical mullions. The mullion cap includes a substantially planar bottom plate having an upper surface, a lower surface, a front edge, and a back edge. The mullion cap further includes an attachment face located on the upper surface of the substantially planar bottom plate. The attachment face is operable to attach to the vertical mullion.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.