Dual angled canopy retractable awning
A retractable awning includes a roller reversibly driven and mounted within a housing for support on a support structure and both inner and outer sets of pivotally interconnected support arms for supporting an awning canopy when extended. The inner set of support arms support the canopy beneath an inner segment of the canopy adjacent the support surface and are designed to deploy before the outer set of support arms with the outer set of support arms supporting the canopy beneath an outer segment of the canopy further away from the support surface than the inner segment. Both the inner and outer sets of support arms can be partially or fully deployed to regulate the extent to which the awning is extendible away from the support surface. The outer support arms are mounted for pivotal movement within a plane forming a different angle with horizontal than the inner set of support arms so the inner segment of the canopy above the inner set of support arms when extended forms a different angle with horizontal than does the outer segment of the awning canopy overlying the outer set of support arms when extended.
1. A retractable awning for attachment to a support surface comprising in combination:
a base structure;
a system for securing the base structure to the support surface;
a roller rotatably supported on said base structure with a flexible awning canopy sheet secured thereto along an inner edge of the canopy sheet;
at least two inner sets of inner support arms having an inner arm and an outer arm with the inner and outer arms of each inner set being connected together with an inner elbow joint, said inner arm of each inner set being operatively pivotally connected at an inner end thereof to said base structure, and said outer arm of each said inner set having a pivot bracket at its outer end distinct from the pivot bracket of any other inner set,
at least two outer sets of outer support arms having an inner arm and an outer arm with the inner and outer arms of each outer set being connected together with an outer elbow joint, said inner arm of each said outer set having an inner end operatively pivotally connected only to an associated pivot bracket at said outer end of said outer arm of an associated inner set, an outer end of said outer arm of each outer set being operatively secured to an outer edge of said canopy sheet,
there being a separate pivot bracket for each associated inner and outer sets of supports arms, and
a system for extending and retracting said inner and outer sets of support arms to extend and retract said awning.
2. The awning of claim 1 wherein said inner elbow joint has a first pivot axis about which said inner and outer arms of the inner set of support arms pivot and said outer elbow joint has a second pivot axis about which said inner and outer arms of said outer set of support arms pivot, and wherein said first and second pivot axes form different angles with vertical.
3. The awning of claim 2 wherein said inner and outer arms of said inner set of support arms pivot within a first common plane about said first pivot axis and said inner and outer arms of said outer set of support arms pivot in a second common plane about said second pivot axis, such that said first and second common planes form different angles relative to horizontal.
4. The awning of claim 3 wherein each of said pivot brackets have third and fourth pivot axes parallel respectively to said first and second pivotal axes.
5. The awning of claim 4 wherein said outer end of said outer arm of each inner set of support arms is pivotally connected to an associated pivot bracket for movement about said third pivot axis and said inner end of the inner arm of each outer set of arms is pivotally connected to an associated pivot bracket for movement about said fourth pivot axis.
6. The awning of claim 5 further including a support rail operatively connected to said pivot brackets to support said canopy sheet when said awning is extended.
7. The awning of claim 1 further including a reversible motor operably connected to said roller for extending and retracting said awning.
8. The awning of claim 1 wherein said system for extending and retracting said inner and outer sets of support arms is a spring biased system biasing said sets of support arms toward an extended position.
9. The awning of claim 8 wherein said spring biased system includes a coil spring associated with each set of inner and outer support arms.
10. The awning of claim 9 wherein said spring biased system further includes a non-extensible cable associated with each coil spring and wherein said spring and associated cable are disposed internally on a set of support arms.