Combination Umbrella and Cover
AssigneeMumco Ltd.
InventorScott A. MUMMERT
Life of this patent
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Abstract
Disclosed herein is a large umbrella configured to solve several existing deficiencies. The umbrella is configured for ease of operation, requiring very little effort for operation. This is achieved, in part, by use of a specially designed actuator arm used in conjunction with at least one pulley and counterbalanced weight system. Moreover, the umbrella canopy and framework is configured to allow the entire canopy to be lowered while remaining fully extended, so as to form a cover for a table into which its center pole is situated. Additionally, the umbrella canopy can be constructed with an extendible skirt. When unfurled, the skirt can extend the canopy cover so as to form an enclosure that fully surrounds the table, table legs, and chairs, for example.
Claims21
Framework for an umbrella comprising:
- a. A hollow pole comprising a cylindrical wall having inner and outer sides having a top portion, an elongated middle portion, and a bottom portion, the outer side of the cylindrical wall having fixed thereon a slidimg rail having a top end positioned at about the bottom of the top portion of the pole and extending vertically downward to a lower actuator arm support positioned on the pole at about the top of its bottom portion, the cylindrical wall further having at least one pulley opening extending from its outer side to its inner side in the top portion of the pole above the sliding rail;
- b. A moveable, discontinuous cylindrical sliding sleeve having an inner side opposing the outer side of said pole, wherein a vertical channel slightly wider than said sliding rail extends along the length of the sliding sleeve, and wherein the vertical channel is aligned along said sliding rail;
- c. An upper canopy support and a lower canopy support, each having a top and a bottom, each having a substantially cylindrical inner shape, and each being attached to said sliding sleeve so as to maintain a fixed distance therebetween, wherein said sliding sleeve extends from the bottom of the inner side of the lower canopy support to the top inner side of the upper canopy support;
- d. Struts, each comprising a long upper strut arm pivotably connected to a short lower strut arm, wherein each long upper strut arm has a terminal end pivotably connected to said upper canopy support, and wherein the struts are spaced at substantially even intervals around said upper canopy support;
- and wherein each lower strut arm terminates on one end at the pivot connection with its corresponding upper strut arm, and terminates at its other end at a pivotable connection to said lower canopy support;
- e. An actuator comprising a lower actuator arm pivotably connected to an upper actuator arm, wherein the lower actuator arm is pivotably connected at one end to said lower actuator arm support and extends outward, and wherein the upper actuator arm has a two ends, a first end terminating at a pivotable connection to the lower actuator arm, and a second end terminating at a pivotable connection to said upper canopy support;
- f. At least one pulley system having a cable and a pulley, wherein the pulley is mounted vertically in said hollow pole and extends outward through said at least one pulley opening, and wherein the cable has two ends, a first end being attached to said upper canopy support, and a second end extending over the pulley and downward into said inner side of said hollow pole;
- and
- g. At least one counterbalance weight, the at least one counterbalance weight being attached to said second end of said cable in said inner side of said hollow pole.
Dependencies are inferred from the claim text.