Umbrella having an anti-inversion mechanism
AssigneeShedrain Corporation
InventorsDavid Haythornthwaite, Andrew Haythornthwaite
Life of this patent
Estimating the term…
Abstract
An umbrella has a plurality of ribs attached to a runner by main struts. The umbrella has an anti-inversion mechanism formed of a plurality of anti-inversion struts. Each anti-inversion strut is pivotally coupled to one respective main strut and is pivotally connected to a floating joint member that is freely movable along a length of one respective rib. The anti-inversion mechanism also includes a stop that is fixedly attached to the rib and restricts the degree of travel of the floating joint member along the rib and is positioned to prevent the respective rib from inverting in response to an applied force.
Claims17
An umbrella comprising:
- an elongated shaft having a first end and an opposite second end;
- a runner slidably disposed about the elongated shaft and movable along a length of the shaft;
- and
- a plurality of ribs that are attached to the runner by a plurality of main struts that move between open and closed positions in which in the open position, the ribs are in an open, extended position and in the closed position, the ribs are in a closed, collapsed position;
- an anti-inversion mechanism comprising a plurality of anti-inversion struts, wherein each anti-inversion strut is pivotally coupled to one respective main strut and is pivotally connected to a floating joint member that is freely movable along a length of the rib, the anti-inversion mechanism also including a stop that is fixedly attached to the rib and restricts the degree of travel of the floating joint member along the rib and is positioned to prevent the rib from inverting in response to an applied force;
- wherein the anti-inversion strut has a first face, an opposing second face, a first end portion and a second end portion, wherein the first end portion has a first trough formed along the first face and second end portion has a convex surface formed along the first face and the second end portion has a second trough formed along the second face and the first end portion has a convex surface formed along the second face;
- wherein in the closed position of the umbrella, one of the plurality of ribs is received within the first trough and one of the plurality of main struts is received within the second trough to form a nested arrangement which increases the compactness of the umbrella.
An umbrella comprising:
- an elongated shaft having a first end and an opposite second end;
- a runner slidably disposed about the elongated shaft and movable along a length of the shaft;
- and
- a plurality of ribs that are attached to the runner by a plurality of struts that move between open and closed positions in which in the open position, the ribs are in an open, extended position and in the closed position, the ribs are in a closed, collapsed position;
- an anti-inversion mechanism comprising a plurality of anti-inversion struts, wherein each anti-inversion strut pivotally coupled to one respective strut and is pivotally connected to the rib;
- wherein the anti-inversion strut has a first face, an opposing second face, a first end portion and a second end portion, wherein the first end portion has a first trough formed along the first face and the second end portion has a second trough formed along the second face such that in the closed position of the umbrella, one of the plurality of ribs is received within the first trough and one of the plurality of struts is received within the second trough to form a nested arrangement which increases the compactness of the umbrella.
Dependencies are inferred from the claim text.