Flexible or portable closure – partition – or panel – Roll type – With rotating means
Patent
1999-01-08
2000-10-31
Purol, David M.
Flexible or portable closure, partition, or panel
Roll type
With rotating means
160298, A47G 502
Patent
active
061387401
ABSTRACT:
An improved bearing mechanism with both a relative larger axial force adjustment mechanism and a relatively smaller axial force adjustment mechanism, works in conjunction with the control rod of a vertical blind system or a roller shade system to provide superior bearing and load handling capability. A primary adjustment mechanism provides a first magnitude range of urging force of a bearing structure toward a housing as by the use of an axial bolt or the like. Inasmuch as this is difficult to adjust without removal of the roller shade and such adjustment is difficult gauge physically, a secondary adjustment structure enables tension adjustment over a second magnitude range of urging force and which is accessible without having to remove the roller. The secondary adjustment structure is a wedge which operates adjacent the main tension member.
REFERENCES:
patent: 4223714 (1980-09-01), Weinreich et al.
patent: 4291593 (1981-09-01), Santambrogio
patent: 4834164 (1989-05-01), Tuhey
patent: 5137073 (1992-08-01), Huang
patent: 5488983 (1996-02-01), Jung
patent: 5875829 (1999-03-01), Chou
patent: 5983972 (1999-11-01), Chou
Harrington Curtis L.
Purol David M.
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