there is illustrated in fig1 , generally at 10 , a fence panel of the present invention . the generally rectangular panel 10 includes a top rail 12 , a bottom rail 14 , a first end rail 16 , and a second end rail 18 . a plurality of parallel , spaced - apart , horizontal rails 20 are attached at opposite end portions to the end rails 16 and 18 , and a vertical rail 22 is attached at opposite end portions centrally of the top rail 12 and the bottom rail 14 and is also secured to each of the horizontal rails 20 . in a preferred embodiment , the end rails 16 and 18 extend below the bottom rail 14 and curve upwardly to form feet 24 and 26 which support the panel 10 on the ground and ease movement of the panels 10 by a user by providing a pivot point when the opposite end of the panel 10 is elevated . the panel 10 includes one or more corresponding pairs of connection systems , including a pin connector unit 28 mounted on the first end rail 16 and a connector loop 30 mounted at a corresponding position on the second end rail 18 . in the preferred embodiment illustrated in fig1 , there are two pair of the connector systems , one mounted near the top rail 12 and the other mounted near the bottom rail 14 . a pin connector unit 28 is illustrated in detail in fig5 a – d . the pin connector unit 28 includes a u - shaped bracket 32 and a releasable closing member or pin 34 . the u - shaped bracket 32 has a pair of aligned pin openings 36 a and 36 b , one each in the end portion of each arm of the u - shaped bracket 32 , as well as a pair of aligned elongated openings 38 a and 38 b , one each in each arm of the u - shaped bracket 32 interiorly of the aligned pin openings 36 . the pin 34 has a shaft 40 and an enlarged head 42 and the shaft 40 is received in the openings 36 in the arms of the bracket 32 with the enlarged head 42 being larger than the openings 36 so that it supports the pin 34 across the arms of the bracket 32 . a connector loop 30 is best illustrated in fig2 . it is made of a piece of rod that has been bent to form a u - shaped loop 44 and a pair of downwardly extended support arms 46 that are secured to the second end rail 18 by weldments or the like . a pin connector unit 128 is secured to the first end rail 116 of a second panel 110 by weldments or the like . as illustrated , the two panels 10 and 110 are releasably interconnected to each other by removing the pin 34 from the bracket 132 , orienting the panels 10 and 110 so that the opening of the loop 44 is aligned with the pin openings 136 of the bracket 132 and then dropping the pin 134 into the aligned openings and loop thereby capturing the connector loop 30 inside the bracket 132 . while only the top connector system is shown , it is to be understood that a user typically will also capture the lower connector loop inside the corresponding lower pin connector unit . additionally , while the panels 10 and 110 are shown in substantial linear alignment , it is to be understood that the panels can be pivoted relative to each other through a wide angle until the end rail 18 of panel 10 comes into contact with the bracket 132 of the panel 110 . a third panel 210 can be interconnected to the two panels 10 and 110 , as illustrated in fig3 . the pin 234 of the third panel 210 is removed from the bracket 232 and the panel 210 is oriented to align the pin openings of the bracket 232 with the elongated openings of the bracket 132 . the pin 234 is then dropped into the two pairs of aligned openings to capture the bracket 232 inside the bracket 132 . again , it is expected that typically the user will also similarly interconnect the pin connector units of the two panels 110 and 210 at the lower portions of the two panels . note also that while the third panel 210 is shown substantially perpendicular to the first two panels 10 and 110 , all three may be pivoted relative to each other to a wide range of positions within the limits imposed by the connector systems . a fourth panel 310 can be interconnected to the three panels 10 , 110 and 210 , as illustrated in fig4 . the pin 234 of the third panel 210 is removed from the bracket 232 and the panel 310 is oriented to align the opening in the loop 344 with the elongated openings of the bracket 132 and the pin openings of the bracket 232 . the pin 234 is then dropped into the three pairs of aligned openings to capture the bracket loop 344 inside the brackets 132 and 232 . again , it is expected that typically the user will also similarly interconnect the pin connector units of the three panels 110 , 210 and 310 at the lower portions of the panels . note also that while the fourth panel 310 is shown substantially perpendicular to the other three panels , all four may be pivoted relative to each other to a wide range of positions within the limits imposed by the connector systems . the foregoing description and drawings comprise illustrative embodiments of the present inventions . the foregoing embodiments and the methods described herein may vary based on the ability , experience , and preference of those skilled in the art . merely listing the steps of the method in a certain order does not constitute any limitation on the order of the steps of the method . the foregoing description and drawings merely explain and illustrate the invention , and the invention is not limited thereto , except insofar as the claims are so limited . those skilled in the art who have the disclosure before them will be able to make modifications and variations therein without departing from the scope of the invention .
a fence panel that includes a self - contained connector system which can be used to interconnect , in assembling an animal enclosure , up to four of the panels quickly and easily without the need for additional posts , connectors , or other apparatus .