ES2295034T3 - UMBRELLA STRUCTURE AND OPERATING SYSTEM. - Google Patents

Abstract

The present invention relates generally to an umbrella, and more particularly, to a durable and versatile umbrella frame (10) designed to more readily endure abusive weather conditions and that may be quickly, easily and inexpensively repaired. In accommodate umbrella canopies of different sizes and shapes. The present invention is also directed to an umbrella operating system which allows for the simple opening, closing and locking of an umbrella while allowing the frame to freely rotate about the pole, wherein the pole is held in a stationary position. The umbrella includes a pair of hub members (18, 30) mounted about a pole member (12) wherein the lower hub member (18) is slidable up and down the pole (12). A pulley system (45, 130) with locking cam member (140) may be employed to allow the umbrella to safety and easily open to any desired level. A locking stabilizer arm (80) may be used to secure the main hub member (18) in the fully open position and a stabilizer base (120) provides strong support to the pole member to help it withstand severe weather conditions. The umbrella is rotatable about the pole axis regardless of the degree to which it is opened.

Description

Umbrella structure and system functioning.

Background of the invention Field of the Invention

This invention generally relates to umbrellas. and more particularly to a durable umbrella structure and Versatile designed to withstand extreme conditions more easily meteorological The present invention is also referred to in a manner more particular to an umbrella operating system that It has improved stabilization qualities and characteristics of personalization.

Description of the related technique

Outdoor umbrellas are used to protect people from sun, wind, rain and other elements of the nature. As such, they have been intentionally designed to Resist these elements. However, it can arise and damage arises in the structure of an umbrella for many reasons, particularly in umbrellas in geographic areas of extreme and unexpected weather as well as in umbrellas that have not been installed properly. Many prior art umbrellas suffer the disadvantages of not being able to withstand inclement weather conditions and they are also difficult to repair when damage arises. For example, an umbrella that It has static wire, rigid line and no construction balanced at the nerve and strut pivot point will wear out and will break often when extreme forces are applied with the step weather. Once an umbrella has been damaged, it is often more expensive and difficult to repair the umbrella than replace it.

For umbrellas with pivot connections individual between the upper nerve and the strut assembly inferior, the unbalanced nature of the movement causes in the pivot point relative to the upper central hubs and lower unnecessary wear on the pivot joint as well as to the static wire or rigid line that connects the set of ribs of the canvas to the central bushings. This wear is not desirable and worsens over time due to tensions both of man and of nature.

For umbrellas with pivot connections individual between the upper nerve and the strut assembly bottom by means of a vertically configured support of individually, existing plastic stands protrude from the top of the canvas set providing a point of friction between the canvas fabric and the rigid protrusion of the support of lace. This creates excessive wear on the canvas fabric and to often creates holes in the canvas fabric.

Several umbrella structures are described, by example, in the following US patents No. D25,368 of Sparry; D56.043 of Weinberg et al .; 2,336,116 of Morando; 3.17,882 of Militano; 4,368,749 to Lindler et al .; 4,834,126 of Sweet, Jr; and 5,715,853 of Lin. None of these Umbrella structures shows the connection of a central hub with a secondary bushing in a way that allows rapid exchange of components to allow customization of the size and shape of the Canvas member above the umbrella structure.

In addition to the aforementioned, many have tried to simplify and improve the characteristics of umbrella operation in addition to adding structural stability to the typical umbrella. However, many of these efforts have required the use of a crankshaft to open and close the umbrella or require the placement of a person's hand in a position committed to lock and unlock the umbrella from your open position Such action is often annoying and inconvenient. and can cause injury.

Therefore, the need remains in the technique for an umbrella that is structured to resist strong winds and other violent weather, which can also be repaired Quickly and economically. If any were developed umbrella of this type, it would be preferable to also modify easily to accommodate umbrella tarps of different sizes and shapes. Also, if any umbrella of this type is developed, would preferably include a pulley system to allow the umbrella opens easily and adjusts to various degrees and then It simply locks in place. Finally, if it developed any umbrella of this type would also preferably include a stabilization system to better support the umbrella and provide a safer and more effective way to block the umbrella in its fully extended position.

ITPD950052A refers to elements of sliding joint for large and similar umbrellas and was used based on the preamble of claim 1.

Summary of the Invention

The present invention provides a structure of umbrella as set forth in claim 1. They can be gather preferred embodiments of the present invention from the subordinate claims.

The present invention is designed to treat these and other needs that remain in the art and refers mainly to a durable outdoor umbrella structure that resist extreme forces and be repaired quickly, with little cost and easily. In addition, the present invention can also be Easily modify to accommodate different umbrella tarpaulins sizes and shapes. Therefore, and as explained in more detail below in this document, this invention includes a pair of bushing members mounted on a member of post in which a bushing member is slidable between upper and lower ends of the post. In addition, members of Bushing are preferably rotating around the post. The bushing members include a plurality of grooves at their edges radial to receive a combination of connection joints bushing A corresponding number of nerves and struts ensure pivoting shape to each bushing by means of these joints and the struts are pivotally secured to the nerves by means of hoop members. The bushing connection joints and the members of ring are easily mounted and replaced and assist in the trouble-free operation of the umbrella structure. Further, hoop members keep a low profile to avoid contact and, in this way, the potential damage of a tarp mounted.

The present invention also provides a versatile umbrella operating system that allows a Umbrella opens easily and securely to almost any degree, which can be easily rotated and firmly stabilized. How such, the present invention includes a pulley system that allows that the umbrella easily adjusts to almost any degree of opening and lock in place. In addition, a base plate member that has a tilting lid for provide stability to the lower end of the umbrella, as well as provide a means to maintain the opening of the base of the covered umbrella when the umbrella is removed.

A main object of the present invention is provide an umbrella structure capable of resisting very hot and cold temperatures, strong wind conditions and other inclement weather conditions.

It is another object of the present invention provide an umbrella structure that can be manipulated easily to allow the union of canvases in different ways and sizes.

It is also another object of the present invention provide an umbrella structure capable of rotating simply.

It is another object of the present invention provide an umbrella structure that has parts easily Replaceable and interchangeable.

Another important object of the present invention is to provide an umbrella set capable of opening to Any desired level.

Another object of the present invention is provide an umbrella set capable of opening to any desired level being rotary at the same time.

Another object of the present invention is provide an umbrella set that eliminates the need for a lifting crankshaft to open and close the assembly umbrella.

It is another object of the present invention provide an umbrella set that eliminates the need for a safety pin under the lower movable bushing member for hold the umbrella in the open position.

It is another object of the present invention provide an umbrella set that has a stabilizer of safe and effective base.

The above list of objects for the invention It is intended to be illustrative only and should not be considered limiting in any way. As such, these and other objects, features and advantages of the present invention will result more clear and / or may be deduced from the detailed description of the invention in one (several) embodiment (s) Preferred (s) explained below.

Brief description of the drawings

fig. 1 is a front elevation view partially exploded and partially transverse of a set of umbrella structure, using a safety pin, with the closed position of the umbrella shown in transparency;

fig. 2 is an exploded perspective view of a main bushing member and a secondary bushing member and also illustrating preferred bushing connection joints;

fig. 3 is an exploded perspective view of a preferred hoop member;

fig. 4 to 8 are schematic views upper that show examples of different canvas shapes that  can be used with the present invention;

fig. 9 is a partially elevational view frontal and partially transverse of the structure set of umbrella, shown with a double pulley system;

fig. 10 is a partially elevational view front of an umbrella operating system, shown with stabilizer bar and base member and with the open position of the umbrella shown in transparency;

fig. 11 is a perspective view exploded from the stabilizer base member portion of the umbrella operating system;

fig. 12 is a partially elevational view side of an embodiment of a pulley system of the operation of the umbrella of the present invention;

fig. 13 is a partially elevational view front of an embodiment of the pulley system of the umbrella operation of the present invention;

fig. 14 is a partially elevational view side of an embodiment of the pulley system of the umbrella operation of the present invention;

fig. 15 is a view partially in perspective of an embodiment of the pulley system of the Umbrella operation of the present invention.

Detailed description of the embodiment (s) preferred (s)

The present invention relates to a Improved umbrella structure and operating set.

Referring initially to figures 1 to 8, an umbrella structure set will now be described, generally indicated with reference number 10. The set of umbrella structure 10 is intended for use in the support easy and fast of a variety of canvas shapes and sizes and is structured to be durable as well as weather resistant. How illustrated in figure 1, the structure assembly 10 includes a post member 12, which extends longitudinally, which can Be made of wood, aluminum or other material. In a embodiment, the pole member is made of gauge aluminum 40. The post member 12 has an upper end 14 and a lower end 16. The lower end 16 can be secured easily to the ground or other vertical fixing means, such as but not limited to a reinforced concrete base that, for example, can have a star overhang and a hitch pin. He structure assembly 10 also comprises a bushing member main 18, which has a central cavity 20 that extends axially by it, which is secured to the center post member and is slidable between the upper 14 and lower 16 ends of the post member The main bushing member 18 is also capable of rotating around the axis of the pole member. In one embodiment of the invention, as shown in Figures 1 and 3, the member main bushing 18 is provided with a base portion 22 in substantially "hourglass" form that has upper portions 24 and lower 26 and a central portion 28 which has a smaller diameter than the upper portions e lower. The shape of the base portion makes it possible to manipulate  simple the bushing member 18 manually up and down the post member

As shown in Figures 1 and 2, it provides an upper or secondary bushing member 30 near the upper end 14 of pole 12. The secondary bushing member 30 is provides with a central cavity 32 that extends axially by it, in which the cavity includes a portion 34 that receives the pole and a narrower upper portion 36 extending over an inner wall 38 of the secondary bushing member. Wall inside 38 keeps the bushing member in position at the end upper 14 of post 12. Bushing members 18, 30 may be Made of injection molded thermoplastic, such as DELRIN with TEFLON, for example, so that they resist oxidation, UV degradation, dry rot and water damage. Can be used other rigid and / or flexible materials.

As illustrated in Figure 1, a threaded bolt 15 extends from the central post 12 through the upper portion narrow 36 of the central cavity 32 of the secondary bushing member. A nut 17 tight around bolt 15 is able to hold the secondary bushing member 30 in substantially rigid position with respect to post 12. When desired, the nut can be loosened 17 to allow the secondary bushing member to rotate around of the pole shaft. An auction or cap 40 is also secured at 15 bolt for aesthetic reasons once the canvas has been placed on top of the structure set. The cap also maintains the Canvas fabric in a secured central position.

As shown in Figure 2, the main and secondary bushing members 18 with grooves 42 formed at intervals relative to their respective radial edges 44 are also provided. The grooves 42 have three sides and include a base 46, a rear wall 48 and a pair of side walls 50. The rear wall looks radially outward from the bushing members 18, 30 and the side walls extend outwardly from the rear wall of the slot 48 with divergent angles. In one embodiment of the invention, the grooves measure approximately
6.35 mm (1/4 inch) deep and the rear groove wall is approximately 19.05 mm (3/4 inches) wide.

As shown in figure 2, you can insert bushing connection joints 52 into the grooves of bushing member 42 and can be secured therein by screws 54, for example. Bushing connection joints can be made of injection molded thermoplastic or metal stamping, for example. The connection joints of bushing with a base portion 56 and a pair of side walls substantially parallel 8 defining an interior opening 60. The bushing connection joints also have a rear face 62 and a pair of corner walls 64 extending outwards from the rear face 62 with divergent angles. The back face 62 and corner walls 64 coincide respectively with the groove rear wall 48 and groove walls 50. Therefore, the angles with which the corner walls 64 diverge and the slot side walls 50 from the rear face 62 and the wall slot rear 48, respectively, are substantially identical In one embodiment of the invention, this angle is of approximately 104 degrees. By providing slots 42 with three walls 62, 64 and a base portion 56, an exact fit is ensured  of bushing connection joints within member grooves bushing and helps prevent seals 26 from twisting or shifting Due to the pressure. In addition, the depth and width of the slots allow bushing connection joints to be secured without difficulty and remove from inside the slots using a screw 54, as shown in figure 2. While a member Screw is shown as the coupling means for gaskets bushing connection inside the bushing member slots, it they can use other forms of coupling, such as a threaded bolt of machine, a tight cut or other element that allows coupling and remove bushing connection joints easily. As shown in figure 2, the inner surface 66 of the connection joints bushing 26 can be rounded and substantially U-shaped  to provide free space for nerve and strut members, as described below. In the embodiment of the invention As shown in Figure 2, members of strut 8, 30 with eight slots 42 to accommodate up to eight gaskets hub connection 52. Another number of slots

As shown in Figures 1 to 3, the nerve members 70 are pivotally secured to the bushing connection joints 52 of the secondary bushing member 30. The nerve members 70 form the outer frame of the structure of the Umbrella of the present invention. The strut 80 members are pivotally secured to the first end 82 of the gaskets bushing connection 52 of main bushing member 18 and are pivotally secured by a second end 84 to the members of nerve 70 at a point near the point approximately middle of the nerve members. The members of strut 80 provide support for nerve members when the Umbrella structure is in the extended or open position. Be you can specify the pivotal coupling of the nerve members and of strut to their respective bushing connection joints using only one screw 54 extending through the bushing connection gasket and the nerve or strut member, machine threaded bolt, cut adjusted or similar joints that allow replacing so Simple bushing connection joints. The nerve members and Strut can be made of aluminum or wood, for example.

As shown in Figure 3, the members of strut 80 are pivotally secured to the members of nerve 70 by means of a hoop member 90. The hoop member 90 includes a pair of substantially parallel outer walls 92 and a central dividing wall 94 includes a pair of outer walls substantially parallel 92 and a central dividing wall 94 that combine to define a portion of upper channel 98 and a lower groove portion 98 on opposite sides of the wall dividing 94. The upper portion 100 of the outer walls of the hoop member 92 defining the channel portion 96 includes edges outwardly divergent sides 102 and an upper edge substantially flat 104. The channel portion 96 may have a substantially rounded inner surface 106 adapted to receive the nerve members. When the nerve members they have a substantially different shape, the Channel portion 96 to match that shape. As shown in Figure 3, the inner surface 106 of the channel portion It extends by half circumference of the nerve member. How I know shown in figure 3, nerve members can be secured 70 within the channel member portion of ring 96 by means of a screw 91 and a nut 93. The upper edge substantially flat 104 of the hoop member prevents contact with the tarp of the umbrella that is placed above the nerve members and of way that helps prolong the life of the canvas used. The strut members 80 are pivotally secured to the slot portion 98 of the hoop member 90 by means of a screw 91 and a nut 93, as shown in Figure 3. Also, as shown in figure 3, a sleeve member can be used substantially cylindrical 110 between the hoop member 90 and the nerve member 70 to reinforce the support provided by the strut member 80 to nerve member 70. In an embodiment of The invention, sleeve member 110 is made of aluminum.

As discussed more fully hereinafter with reference to Figures 9 to 15, the position of the main bushing member 18 along the post can be secured in several ways. However, as shown in Figure 1, one way uses a retaining pin 112 attached to the main bushing member 18 that can be placed within a retaining pin slot 114 in the post 12 to maintain the vertical position of the member. of main bushing 18 along the post. Pin 112 is secured to the main bushing member to allow free rotation of bushing members 18, 30 around the post even when pin 112 is located within pin retaining slot 114. As shown in Figure 1 , the pin 112 is maintained around the central part 28 of the main bushing member by means of a loop line 116 which allows the main bushing member to be rotated without linking the line. The main bushing member can also be formed by two pieces and ball bearings or roller bearings or the like can be used to allow the two pieces to move independently of one another in a lateral direction, while still moving as a unit by the pole up and down. Such an arrangement allows retention of the retention pin within its groove and, in the same way, keeping the main bushing member in the upper position of extended structure
while allowing the umbrella canvas structure assembly to rotate freely around the pole axis.

In operation, you can use any number and size of nerve and strut members desired, depending of the particular size and shape of the umbrella canvas that is going to couple. Since the bushing connection joints and the hoop member they are installed so easily, you can get many different canvas configurations with little effort either increasing or decreasing the number of bushing connection joints present on bushing members. For example, as shown In Figures 4 to 8, four nerve members 40 are used to the square canvas 122 (figure 4), eight members are used of nerve 40 for the octagonal shaped canvas 124 (figure 5), it they use three members of nerve 40 for the triangular shaped canvas  126 (figure 6), six nerve members 40 are used for the canvas with rectangular shape 128 (figure 7) and five members of nerve 40 for the semi-octagonal shaped canvas (figure 8). He number of nerves used determines the number of members of strut, bushing connection joints and hoop members to be use. For example, with four nerve members, they are used four strut members, eight bushing connection joints and four hoop members. For proper operation, ensure the bushing connection joints inside the slots corresponding in the main and secondary bushing members. Other geometric shapes and canvas sizes can also be used using the structure set of the present invention.

Canvases of various shapes and sizes are attached to the umbrella structure by unscrewing the cap or cap 40 of the upper end 14 of post 12 and removing the lock nut 17. The opening of the canvas is placed above the threaded bolt 15 and the cufflinks on the canvas are placed around the ends exterior of the nerve members. Then the nut is placed safety 17 and the cap 40 again on the threaded bolt 15. In one embodiment of the invention, the canvas members are SUNBRELLA 100% mass-stained acrylic canvases or any other shaded or non-shaded material.

When the structure is in position retracted, as shown in transparency in figure 1, the main bushing member 18 is near the lower end 16 of the post. When lifting the main bushing member 18 on the post, it extend the strut members 80 outwardly, so that the nerve members 70 expand and the coupled canvas is opened 21. When the strut 80 members pass the point where extend perpendicularly from the member of post 12, it block strut members 80 in place against a member of bushing stop 120 secured to the post, as shown in lines continued in Figure 1. A retaining pin member 112, described more fully below, it can then be placed inside a slot 114 formed on the post and then you can return bushing member 18 down to rest against the pin member 112. In this position, as shown in the dashed lines of figure 1, strut members 80 are extend substantially perpendicularly from the member of post 12 to provide substantial support to members of nerve 70.

Bushing connection joints are considered 52 and the 90 hoop members are important inventive steps that significantly improve structural and long-term integrity of the umbrella unit. First, the upper portion 100 of the walls of the hoop member 92 remains below the height of the nerve members; therefore, the members of hoop 90 avoid the contact with the tarp during umbrella operation. Saying Contact could significantly damage the canvas fabric. Second, the hoop members 90 and the bushing connection joints 52 they help keep the nerve and strut members in perfect alignment, so that the two independent bushings act in concert during the continuous opening and closing of the structure of umbrella The upper channel portions 96 of the members of 90 hoop hold the 70 nerve members and the portions of slot 98 of the hoop members, as well as the gasket openings of bushing connection 60 place their respective ends on both sides of the members of nerve 70 and strut 80 and allow comfort of pivoting movement Since the bushing connection joints are of Exchangeable and easily replaceable nature, it can be Quickly repair a broken umbrella easily and at a cost Minimum for the consumer. They are also available different textures and colors of bushing members, connection joints of bushing and hoop members.

You can also easily rotate the structure of umbrella 10 by loosening cap 40 and securing nut 17 from the upper end 14 of the post rotating the bushing members 18, 20 to the desired location. The umbrella structure 10 can also use a pulley system, described in more detail more forward, as shown in figure 9 with the number of reference 45, to allow the user to pull the cord of the pulley 47 to start lifting the main bushing member and, in this way, open the umbrella.

Referring now to figures 9 to 15, an umbrella operating system will now be described, generally indicated with reference number 100, which is used advantageously to stabilize an umbrella and open quickly, Close and rotate an umbrella. As mentioned earlier in the This document, the main bushing member can be secured 18 in position along the pole in various ways. As a example, figure 1 illustrates the invention using a pin retainer 112 coupled to main bushing member 18 that can be place inside a retaining pin slot 114 on the post 12 to maintain the vertical position of the main bushing member 18 along the pole. Alternatively, you can keep the main bushing member 18 in position along the post using a stabilizer arm, as shown in figure 10, or a pulley system, as shown in figures 12 to 15.

As shown in Figure 10, you can stabilize the main bushing member 18 in position relative to the pole member using a stabilizer arm 150. The arm stabilizer 150 is pivotally secured by one end 152 to a strut member 80 by a similar hoop member 154 to the hoop member 90. The second end 154 of the stabilizer arm 150 with a safety member 156 for insert in a stabilizer opening 13 on the member of post. Preferably, the security member 156 is a screw of adjustment. Security member 156 may also be a member compression clamp or other component capable of inserting and Easily removed from the stabilizer opening. I also know provides the second end of the stabilizer arm 152 with a locking band member 158 that can be placed around the post and block next to it so that when using a closure of pressure 159 for added support and to ensure that the member of security 156 does not unintentionally leave the position from the inside of the stabilizer opening 13. Using the arm stabilizer, a bushing member can be raised and lowered main 18 without having to use a crankshaft member or a member of retention pin in a high location above the post. This facilitates the general comfort of using the umbrella when opening the Umbrella quickly, secure and close the umbrella tarp.

As shown in figure 9 and figures 12 a 15, the main bushing member 18 can also be moved up and down on the pole member using a pulley system 45 or 130. The pulley system allows effortless lifting of the member main bushing and eliminates the need for a lifting crankshaft or a safety pin below the lower movable bushing. The pulley system portion of the present invention allows the remote locking of the lower movable bushing without preventing rotation of the complete canvas set.

In the embodiment of the invention as shown in figure 13, the pulley system includes a member of line 132 having a first end 134 secured to a member of support 136 that is secured to the upper surface 22 of the member main bushing 18. Line member 132 may have the length of a rope, for example. In this embodiment, a pulley member 138 is secured to the bottom surface 23 of the secondary bushing member and a cam handle member 140 is secured to the side surface 26 of the main bushing member. Pulley member 138 may be a typical pulley having a 180 grooved pulley rotatably mounted to a hoop member 182 in which the hoop member is movably secured to a support member 184. The pulley safety system of the The present invention allows the operator to open the umbrella to any desired level without locks, pins or levers additional by simply pulling the line through the member of automatic locking cam handle.

As shown in Figure 13, the member of cam handle 140 includes a pair of cams 141 which each has a serrated side edge 142 and a retaining support portion 144. Cams 141 are pivotally mounted to the edge side 26 of main bushing member 18 and support of retention 144 is mounted to cams 141. In the position of cam rest, as shown in figure 13, the edges serrated sides 142 look against each other. In this embodiment, the line member 132 extends from the member of support 136 by pulley member 138 and down by the cams 141. A grip is secured to the second end of the member of line 132 to promote operating comfort.

Using the pulley system when the umbrella is in its closed position with the main bushing member near from the lower end of the pole member, the user can pull the line member handle by which the line member by pulley member and handle teeth of cam 142. This will cause the cams to rotate so that they will continue pulling the line against the smooth outer surfaces of the cam 145. This will pull support 136 and the main bushing member 18 up to open the umbrella. When the user stops pull the line member, the cams will turn in the opposite direction  and the locking teeth will prohibit the movement of the line in any address This way you can open quickly and easily the umbrella at any desired level without using a crank or a retaining pin located under the main bushing member. When you want to close the umbrella, you can pull the line out of the teeth grip and release it. Retention bracket 144 keeps the line in alignment with the cam teeth of way that the user can easily help the line reattach the cam member to block the line at the level of desired opening Only the intentional removal of the member from line of the cam teeth with a lateral movement and towards deliberate above will allow to close the umbrella. Cam handle blocking, therefore, avoid any unintentional closing of the umbrella from gusts of wind or other forces external

As shown in Figure 13, the system of Pulleys of the present invention may include a pulley member only 138 secured to the bottom surface 23 of the bushing member secondary 30 and a support member 136 secured to the surface top 22 of a main bushing member 18. The pulley system of the present invention may also include a pair of members of pulley 138 secured to the secondary bushing member, as shown in figure 12. With this arrangement, the line member 132 extends from the support member by a first member of pulley 138 on the secondary bushing member, by a member of pulley on the bushing member mainly for a second pulley member 138 on a secondary bushing member and toward below by cam handle member 140. A provision of this type provides a mechanical advantage for balance and lifting power of the device. In an embodiment of this arrangement, bushing member pulley members secondary are substantially radially spaced equidistant from the axis of the secondary bushing member. Be they can use other variations of the number of pulley members employees in each bushing member. Since bushing members 18, 30 are rotary with respect to the pole axis, provide a pulley system secured to bushing members, provides the Umbrella of the present invention with the ultimate in versatility, since that the umbrella can be opened and rotated to any desired degree of completely free of impediments.

As shown in Figure 13, the member of line 132 extends down from pulley member 138 to be substantially coplanar with a groove wall of the main bushing member 44. This prevents contact of the line with a bushing connection joint 52, with which you could bind and cause unnecessary wear on the line member. Also, as shown in Figure 12, the line member 132 on a hook member 190 secured to the lateral surface of the main bushing member 26.

As shown in Figures 14 to 15, it can optionally secure bushing pulley members secondary directly to the member of post 12 by a member of support 136 which can be substantially extended perpendicular from the pole member, for example. In this realization, post members are prohibited from rotating with respect to the post member

As shown in Figures 10 and 11, you can stabilize the post member 12 at its lower end using a support assembly 120. The support assembly 120 includes a base 126 having a plate member 124 secured thereto by a hinge member 123, in which the plate member 124 has a pin member 122 that extends from its inner surface 125. An opening on the post near the lower end of post 16 can receive pin member 122. Base 126 includes the tube portion substantially cylindrical 127 extending from its lower surface 128 and an opening 131 extending through tube 127 to receive the post member 12. In an embodiment of the invention, provides the post with a pair of axial grooves 133 for couple them with a safety bar 135 inside tube 127. The plate member 124 is secured by hinge to the base 126 so that, when post member 12 is removed, the plate member 124 can cover the opening of the base to avoid that rain, garbage, feet and hands and other similar elements fall at the opening Preferably, pin member 122 is a set screw. In an alternative design, the pin member 122 may be an insertable compression clamp member and Removable from the opening of the pole compressing the sides together. A  band member 127 may also be attached to the plate member 124 and secured with respect to post 12 for added support. In a embodiment, as shown in figure 11, the band member includes a pressure closing mechanism 137.

Stiffness can be thermally conditioned and density of all components described herein document for desired flexibility as desired. For example, the post, nerve and strut members may be composed of metal, wood and fiberglass, but its construction would not be Limited to these rigid compositions. The nature of the thermoplastic construction with materials such as ABS, DELRIN, POLYPROPYLENE and other ACETALS that provide a degree of flexibility in bushing connection joints, hoop members, pulley members and cam handle members of the structure of umbrella. Since these plastics have a degree of flexibility, the energy that would normally absorb a structure umbrella completely static is distributed by all components of umbrella plastic in strong winds or other conditions inclement weather conditions and therefore use is preferred of such materials because it would greatly increase the life of the static structure of an outdoor umbrella, which is generally the highest cost portion of a unit of umbrella.

Claims (14)

1. An umbrella structure (10), which understands: a central pole member (12) that has a longitudinal axis and upper and lower ends (14, 16); a main bushing member (18) insured with respect to said central post member, capable of sliding said main bushing member between said lower ends and superior saying; a secondary bushing member (30) insured to said post member close to said upper end of post; means (52, 70, 80, 90, 110) to support a canvas member (21); pulley means (130) for raising and lowering said main bushing member along said post member; Y means (140, 150) for securing said main bushing member in a stationary position along said post member, wherein said main bushing member (18) includes an upper surface (22) and a lateral surface (26) and wherein said pulley means (130) includes at least one pulley member (138) secured to said member of secondary bushing (30) or to said central post member (12), a support member (136) secured to said main bushing member (18) and a line member (132) having first and second ends, being secured said first end (134) to said support member (136), said line member (132) engaging cooperatively with said pulley member (138) and extending downward from said pulley member (138) towards said lower member end of post (16), wherein said safety means includes a cam member (140) secured to said side surface (26) of said main bushing member (18) and wherein said line member (132) is cooperatively engages said cam member (140) extending downward from said pulley member (138); characterized in that said cam member (140) includes a pair of cams (141) pivotally secured to said side surface of main bushing member (26), said cam pair (141) having respectively a serrated inner side edge (142) ), looking at said serrated inner side edges (142) to each other in a resting position of said cam member (140). 2. The umbrella structure of the claim 1, wherein said support member (136) is secured to said upper surface (22) of said bushing member main (18). 3. The umbrella structure of the claim 1, wherein said cam member (140) includes also a retention support (144) secured to each of said pair of cams (141). 4. The umbrella structure of the claim 1, wherein said main bushing member (18) has an upper axial end and wherein said axial end upper has a radial edge (44) with a plurality of grooves (42) formed at intervals with respect thereto, being separated said grooves (42) individually by a groove wall respective (50). 5. The umbrella structure of the claim 4, wherein said line member (132) extends down from said pulley member (138) in relation substantially coplanar with a groove wall (50) of said main bushing member (18). 6. The umbrella structure of the claim 1, wherein said secondary bushing member (30) includes a lower surface (23) and in which at least said a secondary bushing pulley member (138) is secured to said lower surface of secondary bushing (23). 7. The umbrella structure of the claim 1, wherein said bushing members (18, 30) are rotary with respect to said pole axis. 8. The umbrella structure of the claim 1, further including a hook member (190) secured to said lateral surface (26) of bushing member for Hang said line member (132). 9. The umbrella structure of the claim 1, wherein said pulley means (130) includes the minus a pulley member (138) secured to said bushing member secondary (30) and at least one pulley member (138) secured to said main bushing member (18), said said member of line (132) cooperatively with said pulley members (138). 10. The umbrella structure of the claim 9, wherein said secondary bushing member (30) includes a pair of pulley members (138) secured thereto and said main bushing member (18) includes a pulley member (138).

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11. The umbrella structure of the claim 10, wherein said secondary bushing member (30) includes a lower surface (23) and a central axis and in which further said secondary bushing member pulley members (138) they are substantially radially spaced equidistant from said central axis of secondary bushing member on said lower surface of secondary bushing member (23). 12. The umbrella structure of the claim 10, wherein said line member (132) is extends from said support member (136) of said member of main bushing (18) by a first pulley member (138) of said secondary pulley member (30), by said pulley member of main bushing member (138), for a second pulley member (138) of said secondary bushing member (30) and down towards said lower pole end (16). 13. The umbrella structure of the claim 1, wherein said pulley means (130) includes the minus one pulley member (138) secured to said post member (12) at a location between said bushing members (18, 30) and at minus a pulley member (138) secured to said bushing member main (18), said line member (132) being coupled, cooperatively with said pulley members (138). 14. The umbrella structure of the claim 12, wherein at least one pulley member (138) of said post member (12) extends so substantially perpendicular from said post member (12).