Flexible or portable closure – partition – or panel – Pleating type – With slide guides
Reexamination Certificate
1999-07-23
2001-08-14
Stodola, Daniel P. (Department: 3634)
Flexible or portable closure, partition, or panel
Pleating type
With slide guides
C160S265000, C160S310000
Reexamination Certificate
active
06273173
ABSTRACT:
The present invention relates to a universal mounting and parallel guidance arrangement for at least one screening device for a window, in particular a roof window, where the screening device comprises a body of screening material which in an idle position is rolled up, collapsed, or pleated and occupies a position in or at a main frame or sash member of the window, whereas said body in a free end is connected to a bottom bar, profile rail or strip.
It is well-known, eg. from FR patent application no. 2 615 240 and U.S. Pat. Nos. 612,606 and 785,806, that screening devices in the form of blackout curtains, roller blinds, pleated blinds or Venetian blinds for windows are built together with a parallel guidance arrangement which in a roller blind or pleated blind has e.g. two cord systems, each led from the bottom end of one sash side member through the bottom bar of the blind to the upper end of the opposite sash side member, the cords crossing each other when passing through the bottom bar which is hollow in its entire length.
It is not unusual that especially the cord systems of these known screening devices create problems in connection with the mounting, as the handling of the cords and in particular their positioning in the window sash are not always quite simple and evident, especially not if prior to the mounting, the consumer draws the screening device entirely out in order to have a better look of its colour, form or shape. In addition, the cords are rather easily tangled. Especially in blackout curtains where the screening arrangement also comprises light-proof strips or rails along the sash sides, the mounting is often quite difficult and time-consuming.
The object of the invention is to provide a mounting and parallel guidance arrangement of the initially stated kind where the said drawbacks are set right and which in a simple way can be mounted together with at least one screening device, whether a roller, pleated, or Venetian blind, and whether or not these are provided with a parallel guidance arrangement.
For this purpose, a universal mounting and parallel guidance arrangement according to the invention is characterized in that it comprises at least one mounting bar having a through-going hollowness and designed for a releasable interconnection with the bottom bar, profile rail or strip of the screening device, two parallel guidance cord systems each being led through said mounting bar and comprising end parts which protrude from each end of the stick, and installation brackets for the free end of each of the said end parts whereby the two installation brackets for a cord system are preferably meant for fastening at the top of a first main frame or sash side member and at the bottom of the other main frame or sash side member opposite in relation to the first one, respectively.
Such a mounting and parallel guidance arrangement thus constitutes a kind of a simple base module which can relatively easy be mounted also on already installed windows and can be used with the common screening devices in the form of roller, pleated, or Venetian blinds, and especially such which are not beforehand provided with a parallel guidance arrangement. Such screening devices may e.g. comprise casings, cabinets, cassettes or the like designed with interconnection brackets which can easily be connected with the installation brackets in the base module.
In another appropriate embodiment of the arrangement according to the invention, the parallel guidance cord systems are pretensioned, preferably by pretensioning springs positioned in connection with said installation brackets or by elastic cords or alike.
A particularly good parallel guidance is thus obtained as between the said cord systems and the said mounting bar, a suitable friction will continuously be available for retaining the mounting bar in an arbitrary position, also even if a body of screening material is connected.
According to an advantageous development of the invention, the base module can be designed with a view to electric operation of the screening device by connecting the mounting bar with at least one draw cord which is in connection with an electric operation device comprising a rewinding drum for the draw cord mounted in or at the main frame or sash top or bottom member.
Further details and advantages of the invention will appear from the dependent claims.
REFERENCES:
patent: 612606 (1898-10-01), Forsyth
patent: 684214 (1901-10-01), Forsyth et al.
patent: 785806 (1905-03-01), Hopkins
patent: 4574864 (1986-03-01), Tse
patent: 4733710 (1988-03-01), Haines
patent: 5404926 (1995-04-01), Ojima et al.
patent: 5533559 (1996-07-01), Judkins
patent: 5535806 (1996-07-01), Kold et al.
patent: 2 615 240 (1988-11-01), None
patent: 0 549 209 A1 (1992-10-01), None
patent: 0 558 154 A2 (1993-02-01), None
patent: WO 93/18270 (1993-09-01), None
patent: WO 96/22447 (1996-07-01), None
Shannon John P.
Stodola Daniel P.
Thompson Hugh B.
Velux Industri A/S
Venable
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