Patent ID: 6644379
Filing Date: 2003-11-11
Classification: E06B

Abstract:
An adjustable upper beam with a cuttable blind assembly, comprising:a blind embodiment, a movable upper beam; a pair of retaining clamps; and a pull cord; wherein said blind embodiment is removably attached to an underside of said movable beam and each said retaining clamp has a suspension hook disposed at a top end thereof and has a front clamping plate and a read clamping plate that are integrally connected to each other; said front clamping plate have a pulley seat for the passage and operation of said pull cord; and said rear clamping plate has a through hole at the bottom thereof for the passage trying up of said pull cord; wherein said upper beam is characterized by that said movable upper beam has an outer tube and an inner tube that are partially telescopically engaged with each other; said outer tube and inner tube have a pair of inwardly and upwardly bent bottom edges that are flexibly in contact with each other; on an outer surface of said outer tube and said inner tube are respectively disposed a pair of symmetrically placed registration lugs that are in registration with locking holes defined on said front and rear clamping plates of said retaining clamps; said outer tube has a locking means for adjustably locking said telescopically engaged inner tube in place.