Abstract: A joint structure of a fold type tent frame is provided. In the present invention the joint structure includes a plurality of pillars which support a tent, a plurality of horizontal frames which are supported by the pillars to form a roof, and a plurality of connectors which connect between the pillars and the frames and between the frames as a joint structure, includes semicircular rotators which are disposed at end portions of the frames and have bolt holes formed at central portions of the rotators, coupling parts disposed at each of the connectors to have coupling plates with bolt holes and upper coupling plates perpendicular to the coupling plates such that the rotators are coupled to the coupling parts, guide grooves or guide protrusions formed on the upper coupling plates at the inner side of the coupling parts, and guide protrusions or guide grooves formed on outer peripheral surfaces of the semicircular rotators to correspond to the guide grooves or guide protrusions.

Abstract: A frame element includes a first scissor including a first and a second strut pivotably connected to each other at a first pivot point, a second scissor including a third and a fourth strut pivotably connected to each other at a second pivot point, and a hub to which the first and the third strut are pivotably connected, the first and second scissors being pivotable about the hub between a closed position in which the first, second, third, and fourth struts are substantially parallel to one another and an open, locked position in which the first and third struts define a non-zero angle with each other and abutment portions of the second and fourth struts contact receiving portions of the third and first struts, respectively, and prevent the first and third struts from pivoting beyond the non-zero angle.

Abstract: The quickly erectable canopy shelters include a plurality of legs connected together by an extendible perimeter assembly of link members. The roof structure is formed by a pole members pivotally mounted to the upper ends of the legs so as to extend across the shelter, and movable between a lowered position and a raised, upwardly arching position. The pole members are pivotally coupled to a central hub, and each of the pole members is formed of pole sections hinged to permit downward folding and upward unfolding until they are fully extended. Corner support strut members are pivotally mounted to the extendible perimeter assembly of link members adjacent to the legs, to support the pole members. The outer ends of the pole members are pivotally connected to the upper ends of the legs by pivoting link members that pivot between a lowered position and a raised position extending above the legs when the shelter is extended.

Abstract: A telescoping pole assembly for an erectable, collapsible shelter, includes first and second hollow telescoping sections slidably connected together, the first telescoping section being slidably disposed within the second telescoping section, and a spring loaded detent pin mounted to the second telescoping section. A weighted internal stop member is slidably disposed within the first telescoping section for movement between a first position and a second position. The internal stop member blocks the spring loaded detent pin in the first position, and the internal stop member does not block the spring loaded detent pin in the second position.

Abstract: The corner brace of a framework of a quickly erectable canopy shelter is connected between portions of a perimeter truss assembly connected to a leg of the framework of the canopy shelter. The corner brace includes a corner brace mounting pin on a first link member of an outer truss of the perimeter truss assembly, and a support truss tube member pivotally and rotatably connected at one end to an outer truss on one side of the leg. The other end of the support truss tube member is removably connected to an outer truss on the other side of the leg. The support truss tube member of the corner brace may include a support truss clip that fits to a link member of the framework. The framework may also include a canopy framework support assembly for supporting a canopy.

Abstract: A collapsible self-supporting structure used in combination with an improved articulating hub assembly. The articulating hub assembly is used as a connector among tubular rod elements which together provide a generally tubular frame matrix used to erect a collapsible self-supporting prefabricated deployable structure where a clear span interior without supporting columns is required.

Abstract: A collapsible canopy frame is provided that includes a first truss bar having a surface that defines an opening; a second truss bar having a surface that defines an opening that is aligned with the first truss bar opening; and a connector assembly that pivotally connects the first truss bar to the second truss bar. The connector assembly includes a locking plate at a second end of the connector assembly having a base that defines first and second surfaces with an opening extending therebetween, wherein the first base surface abuts the second truss bar; and a fastener having a main body that extends through each of the first and second truss bar openings and the locking plate base opening. The fastener also includes spaced apart first and second arms each having a shoulder that laterally extends from the main body to abut the second base surface of the locking plate to pivotally connect the first truss bar to the second truss bar.

Abstract: A structure of a canopy includes a plurality of pillars, an end portion connection block fixed to an end portion of the pillar, a slide connection block capable of sliding along the pillar, a plurality of roof edge frames, a plurality of roof center frames, a rod connection block connecting the roof edge frame and the roof center frame, an upper head connection block pivoting with respect to the first rod of each of the roof center frames to form an outer top end of the roof, a lower head connection block pivoting with respect to the second rod of each of the roof center frames to form an inner top end of the roof, a connection block including a corner reinforcement bar capable of being hinge coupled between the roof end connection block and the upper head connection block to reinforce a corner formed to face the center of the roof, and a roof cloth covering the roof edge frame and the roof center frame.

Abstract: A collapsible shelter of the type having a canopy and a frame, the frame having mounting members with a stabilizer, reduced friction pivot shafts and an adjustable locking member having a spring providing for easy adjustment of the height and breadth of the canopy.

Abstract: A portable enclosure, easily erectable and collapsible, to provide environment control and prevent contaminants from being released from the enclosure. The enclosure provides a flexible envelope attached to the interior of the space defined by vertical and horizontal supports which can be erected and collapsed. When erected the enclosure functions as an anteroom and has removable panels in the sides and top. In use, the enclosure is sealed against a vertical or horizontal surface to be worked on and a panel from the side of the enclosure is opened and closed to provide access to the surface by the user. When collapsed the enclosure is a package approximately the size of an average golf club bag which is easily portable to another location. Ducting is provided to which negative pressure pumps are connected to maintain negative pressure within the enclosure and draw contaminants into the pump and then into a closed container.

Abstract: A locking pin assembly includes a button that can be moved in a first direction from a first position to a second position, and a first biasing member for biasing the button to be normally in the first position. The locking pin assembly also includes a locking pin member that engages the button and is movable in a second direction, which is substantially perpendicular to the first direction, from a third position to a fourth position when the button is moved from the first position to the second position. The locking pin assembly also includes a second biasing member for biasing the locking pin member to be normally in the third position. The locking pin assembly can be used in a collapsible canopy frame to adjust the height of a telescoping side pole by fixing upper and lower sections to each other and/or to fix the edge scissor assemblies and the side poles in an opened position.

Abstract: A collapsible tent structure includes a side frame and a top frame. The side frame comprises posts. Each post comprises an upper end and an upper section. The top frame comprises a top connector and top rods. Each top rod comprises an outer end and an inner end. The inner end of the top rod is pivotally connected to the top connector. Each top rod comprises two struts, a sliding bracket, a fixed bracket and a sliding socket. Each strut comprises an upper end and a lower end. The fixed bracket is secured to the upper section of the post. The sliding bracket is inserted onto the upper section of the post. The sliding socket is secured to the upper end of the post. The upper ends of the struts are pivotally connected to the top rod near the outer end of the top rod, while the lower ends of the struts are pivotally connected to the sliding bracket and the fixed bracket, respectively. The outer end of the top end is connected to the sliding socket.

Abstract: The quickly erectable canopy shelters include a plurality of legs connected together by an extendible perimeter assembly of link members. The roof structure is formed by a pole members pivotally mounted to the upper ends of the legs so as to extend across the shelter, and movable between a lowered position and a raised, upwardly arching position. The pole members are pivotally coupled to a central hub, and each of the pole members is formed of pole sections hinged to permit downward folding and upward unfolding until they are fully extended. Corner support strut members are pivotally mounted to the extendible perimeter assembly of link members adjacent to the legs, to support the pole members. The outer ends of the pole members are pivotally connected to the upper ends of the legs by pivoting link members that pivot between a lowered position and a raised position extending above the legs when the shelter is extended.

Abstract: A structure that is foldable and expandable to support a canopy when a covering is placed on top of the framework includes a plurality of upright supports and a plurality of edge scissor assemblies that interconnect adjacent ones of the upright supports. Mounting brackets are disposed on the upright supports and also between scissor assemblies to fasten outer, end portions of the edge scissor assemblies together or to the upright supports. The mounting brackets each have a plurality of unique single side wall sockets each including a means for limiting torsional twisting of the scissor assemblies fastened in the socket. The limiting means comprises a complementary groove or rib for matingly engaging, in a complementary fashion, a complementary rib or groove, respectively, formed on the end of the scissor member received in the socket and secured therein with a pivot pin.

Abstract: A cantilever arrangement for a folding structure is provided. The folding structure is of the type including a plurality of strut members foldable between an open position in which the strut members define a non-zero angle with each other and a closed position in which the strut members define a substantially 0° angle with each other. The cantilever strut arrangement includes a first cantilever strut pivotably adapted to be attached at a first point on the folding structure and a first support member adapted to be attached at a second point on the folding structure and attached at a point on the first cantilever strut. When the folding structure is folded to the closed position, the first cantilever strut member defines a substantially 0° angle with the strut members.

Abstract: The corner brace of a framework of a quickly erectable canopy shelter is connected between portions of a perimeter truss assembly connected to a leg of the framework of the canopy shelter. The corner brace includes a corner brace mounting pin on a first link member of an outer truss of the perimeter truss assembly, and a support truss tube member pivotally and rotatably connected at one end to an outer truss on one side of the leg. The other end of the support truss tube member is removably connected to an outer truss on the other side of the leg. The support truss tube member of the corner brace may include a support truss clip that fits to a link member of the framework. The framework may also include a canopy framework support assembly for supporting a canopy.

Abstract: A foldable frame includes: inverted U-shaped rods aligned in a folding direction, each inverted U-shaped rod having opposite first and second upright portions; and first and second connecting units. Each of the first connecting units interconnects the first upright portions of two adjacent ones of the inverted U-shaped rods. Each of the second connecting units interconnects the second upright portions of two adjacent ones of the inverted U-shaped rods. Each of the first and second connecting units includes two connecting rods that intersect and that are pivoted to each other, and that are respectively pivotable with respect to the respective ones of the first and second upright portions of two adjacent ones of the inverted U-shaped rods, and two sleeves respectively and slidably sleeved on the respective ones of the first and second upright portions of the two adjacent ones of the inverted U-shaped rods, and respectively pivoted to the connecting rods.

Abstract: A tent frame including: leg posts a plurality of expandable connectors connected in pairs between adjacent posts, each connector having first and second outer ends and is fixedly connected at the first outer end to the upper end of one post and slideably connected at the second outer end to a lower portion of the same post, each connector movable between extended and folded states; a roof comprising upper poles, each pivotally connected to a post and to a central pole, each upper pole and corresponding central pole are movable between an extended and folded states; and support pole assemblies, each connected at one end to slide with a second outer end and at another end to a central pole so that each connector, upper pole and central pole expand together to the extended state and the support pole assemblies support the central poles to maintain the extended state.

Abstract: A foldable tent (1), wherein a covering is supported by a plurality of columns (2) and an outer peripheral frame (3) and reinforcement frames (4) connected to the columns (2), the reinforcement frames (4) are formed so as to pass through the inside of a polygon in plan view formed of the outer peripheral frame (3) and disposed so as to connect the columns to the center of the polygon to more increase the strength thereof over a conventional foldable tent, parts of unit pipe bodies forming the reinforcement pipe units (41, 42) of the reinforcement frames (4) are horizontal relative to an installation surface or downwardly titled toward the center thereof to smoothly fold the reinforcement pipe elements (41, 42) when the tent is dissembled, and the reinforcement frames (4) are supported on the columns (2) or on the columns (2) through play allowing the reinforcement frames (4) to move within a specified range from a center column (5) in a generally circumferential direction to smoothly fold the foldable tent.

Abstract: The collapsible shelter includes a truss and a canopy framework that provides a flexible, collapsible canopy that is capable of flexing and moving, in whole or in part, between a raised position and lower positions having a reduced profile from the raised position. The collapsible shelter includes at least three legs supporting a flexible framework mounted to the tops of the legs and forming the framework of the canopy. Truss pairs of link members are connected to each of the legs on each side of the shelter between adjacent legs.

Abstract: A collapsible canopy frame includes a plurality of side poles, and a plurality of scissor assemblies for coupling the side poles to one another. The collapsible canopy frame also includes a center support pole, which includes an outer pole having an upper end and a lower end, and an inner pole slidable within the outer pole. The inner pole has an upper end that can extend upwardly from the outer pole and a lower end that can extend downwardly from the outer pole. A plurality of center scissor assemblies are provided for coupling the plurality of scissor assemblies to the center support pole. A fixing bracket fixed to the lower end of the outer pole has a central opening around the inner pole and a side opening. A locking pin is disposed at least partly in the side opening of the fixing bracket, and is used for fixedly coupling the inner pole to the fixing bracket.

Abstract: The lightweight erectable canopy shelters include a plurality of legs connected together by an extendible perimeter assembly of link members. In one embodiment, the roof structure is formed by a pole members pivotally mounted to the upper ends of the legs so as to extend across the shelter, and movable between a lowered position and a raised, upwardly arching position. The pole members are pivotally coupled to a central hub, and each of the pole members comprises pole sections hinged to permit downward folding and upward unfolding until they are fully extended. Corner support strut members are pivotally mounted to the legs, to be rotatable upwardly to engage and support the pole members.

Abstract: The quickly erectable canopy shelters include a plurality of legs connected together by an extendible perimeter assembly of link members. The roof structure is formed by a pole members pivotally mounted to the upper ends of the legs so as to extend across the shelter, and movable between a lowered position and a raised, upwardly arching position. The pole members are pivotally coupled to a central hub, and each of the pole members is formed of pole sections hinged to permit downward folding and upward unfolding until they are fully extended. Corner support strut members are pivotally mounted to the extendible perimeter assembly of link members adjacent to the legs, to support the pole members. The outer ends of the pole members are pivotally connected to the upper ends of the legs by pivoting link members that pivot between a lowered position and a raised position extending above the legs when the shelter is extended.

Abstract: A collapsible gazebo frame includes a set of four corner support members and a set of four scissor assemblies, each being coupled to a different pair of the four corner support members. Each of four scissor assembly sliders is slidingly coupled to a different one of the four corner support members and serves to extend and retract the scissor assemblies coupled to the respective corner support member when slid along the corner support member. A canopy support frame includes four canopy support members, each being coupled to the top end of a different one of the four corner support members and having a canopy frame joint. The canopy support frame also includes four canopy support arms. Each canopy support arm is coupled to a different one of the four scissor assemblies and to a different canopy frame extender such that the canopy frame joints lock when gazebo frame is deployed.

Abstract: A collapsible gazebo frame includes a set of four corner support members and a set of four scissor assemblies, each being coupled to a different pair of the four corner support members. Each of four scissor assembly sliders is slidingly coupled to a different one of the four corner support members and serves to extend and retract the scissor assemblies coupled to the respective corner support member when slid along the corner support member. A canopy support frame includes four canopy support members, each being coupled to the top end of a different one of the four corner support members and having a canopy frame joint. The canopy support frame also includes four canopy frame sliders, where each canopy frame slider is slidingly coupled to a different one of the four corner support members. The canopy frame sliders serve to lock the canopy frame joints when slid along their corner support members.

Abstract: A portable enclosure, easily erectable and collapsible, to provide environment control and prevent contaminants from being released from the enclosure. The enclosure provides a flexible envelope attached to the interior of the space defined by vertical and horizontal supports which can be erected and collapsed. When erected the enclosure functions as an anteroom and has removable panels in the sides and top. In use, the enclosure is sealed against a vertical or horizontal surface to be worked on and a panel from the side of the enclosure is opened and closed to provide access to the surface by the user. When collapsed the enclosure is a package approximately the size of an average golf club bag which is easily portable to another location. Ducting is provided to which negative pressure pumps are connected to maintain negative pressure within the enclosure and draw contaminants into the pump and then into a closed container.

Abstract: A portable decontamination system includes a preassembled shelter, convertible between a stowed configuration and a deployed configuration, and a fluid delivery system integral with the shelter. In the stowed configuration the shelter encloses a negligible volume. In the deployed configuration the shelter comprises a plurality of side walls, a plurality of end walls, and a roof. The walls and the roof define a central space. The fluid delivery system is configured to convey decontamination fluid into the shelter and to distribute decontamination fluid throughout at least a portion of the central space.

Abstract: The foldable tent having eaves at the top of the sides of the Foldable frame [2] foldable eave frames [3] that extend outwardly can be folded together along with the frame [2] are provided. The covering 1 is put on the frame [2] having eave frames [3] which are n-shaped frames composed of a front side and two lateral sides. The front side is composed of a plurality of scissors frames [4] and the number of which is same to that of the cross beam [8] of the corresponding side of the frame [2] between two poles. Each of the lateral side is composed of a scissors frame [4]0 which is composed of two cross pieces pivotally connected to each other in the midway. All members of the framework [2] including the eave frames [3] are connected with each other through slide connection or pivot connection so that the tent can be used simply by extending the framework [2] and covering it with an tent covering [1].

Abstract: The lightweight erectable canopy shelters include a plurality of legs connected together by an extendible perimeter assembly of link members. In one embodiment, the roof structure is formed by a pole members pivotally mounted to the upper ends of the legs so as to extend across the shelter, and movable between a lowered position and a raised, upwardly arching position. The pole members are pivotally coupled to a central hub, and each of the pole members comprises pole sections hinged to permit downward folding and upward unfolding until they are fully extended. Corner support strut members are pivotally mounted to the legs, to be rotatable upwardly to engage and support the pole members.

Abstract: The present invention provides an improved portable shelter frame having upwardly extending support poles and linkage assemblies connecting the poles. Within the joints of the linkage assemblies are rolling element bearings to reduce joint friction and provide reinforcement support to the shelter frame.

Abstract: A tent frame including: leg posts a plurality of expandable connectors connected in pairs between adjacent posts, each connector having first and second outer ends and is fixedly connected at the first outer end to the upper end of one post and slidably connected at the second outer end to a lower portion of the same post, each connector movable between extended and folded states; a roof comprising upper poles, each pivotally connected to a post and to a central pole, each upper pole and corresponding central pole are movable between an extended and folded states; and support pole assemblies, each connected at one end to slide with a second outer end and at another end to a central pole so that each connector, upper pole and central pole expand together to the extended state and the support pole assemblies support the central poles to maintain the extended state.

Abstract: A collapsible canopy framework structure of a regular polygon comprises a plurality of supporting members and a center post, which are constituted as a column. A plurality of first frame assemblies comprises at least one frame unit with a pair of frames being pivoted in an X shape at their center to each other, in which the first frame assembly is mounted between the supporting member and the center post. The third frame assembly comprises at least one frame unit to be mounted between the supporting members to secure the gaps between the supporting members and provide a structural reinforcement to the upper portion of an overall structure. At least one flexible string is passed through the cross-points of the frame units of the first frame assembly on which a block nut structure is mounted and then fixed into the block nut structure to form a regular polygon of the supporting members and give a tension to the overall structure.

Abstract: The lightweight erectable canopy shelters include a plurality of legs connected together by an extendible perimeter assembly of link members. In one embodiment, the roof structure is formed by a pole members pivotally mounted to the upper ends of the legs so as to extend across the shelter, and movable between a lowered position and a raised, upwardly arching position. The pole members are pivotally coupled to a central hub, and each of the pole members comprises pole sections hinged to permit downward folding and upward unfolding until they are fully extended. Corner support strut members are pivotally mounted to the legs, to be rotatable upwardly to engage and support the pole members.

Abstract: A tent structure includes supporting legs, linkages connected between every two neighboring supporting legs, and a head support. The supporting legs are standing on the ground and equally spaced from each other. Every two neighboring supporting legs are connected with one of the linkages. The head support includes rods and retractable rods. Each of the retractable rods comprises an elastic member engaging with the rod to adjust the length of the rod extending or retracting within the retractable rod. When a tarpaulin is placed on the head support, the retractable rods may extend its length to the degree that the tarpaulin is fully expanded and secured.

Abstract: A collapsible tent skeleton frame includes a plurality of poles, a plurality of joints mounted respectively on the poles, a plurality of side ribs pivoted respectively to the joints, a top joint, and a plurality of upper ribs pivoted respectively to adjacent pairs of the side ribs and to the top joint. Each of the joints has two arms, each of which is formed with a recess that has a round inner end section and an extension. Each of the side ribs has a rounded end that is received in and that conforms to the inner end section of the recess in a respective one of the arms of a respective one of the joints.

Abstract: The quickly erectable canopy shelters include a plurality of legs connected together by an extendible perimeter assembly of link members. The roof structure is formed by a pole members pivotally mounted to the upper ends of the legs so as to extend across the shelter, and movable between a lowered position and a raised, upwardly arching position. The pole members are pivotally coupled to a central hub, and each of the pole members is formed of pole sections hinged to permit downward folding and upward unfolding until they are fully extended. Corner support strut members are pivotally mounted to the extendible perimeter assembly of link members adjacent to the legs, to support the pole members. The outer ends of the pole members are pivotally connected to the upper ends of the legs by pivoting link members that pivot between a lowered position and a raised position extending above the legs when the shelter is extended.

Abstract: A tent frame including: leg posts; a plurality of expandable connectors connected in pairs between adjacent posts, each connector having first and second outer ends and is fixedly connected at the first outer end to the upper end of one post and slidably connected at the second outer end to a lower portion of the same post, each connector movable between extended and folded states; a roof comprising upper poles, each pivotally connected to a post and to a central pole, each upper pole and corresponding central pole are movable between an extended and folded states; and support pole assemblies, each connected at one end to slide with a second outer end and at another end to a central pole so that each connector, upper pole and central pole expand together to the extended state and the support pole assemblies support the central poles to maintain the extended state.

Abstract: A tent structure includes four posts, four scissor-like linking rod sets, four retractable rod sets and a connector. The four posts are placed on four corners of the tent to form a square structure. Each post comprises a fixture at the top portion with a sleeve thereon at an upper portion and a sliding seat thereon at a lower portion. The sliding seat comprises a supporting rod. The four scissor-like linking rod sets are secured between the posts, respectively. One end of each retractable rod set is inserted through the sleeve of each post and the other end of the retractable rod set is pivoted to the connector, thus when the posts are expanded outwardly, the scissor-like linking rod sets are also expanded to form an arcuate tent.

Abstract: The present invention relates to a foldable tent frame in which a connection frame connected to a column is minimized, and a fabrication is simple and easy, and a fabrication cost is largely decreased, and an economical fabrication is achieved, and a cut-away groove is formed in an engaging part of one side of the top connection part. A rotation protrusion of a rotation part is engaged to the cut-away groove for thereby achieving an easier installation of the rotation part. The rotation protrusion of the rotation part is rotated along the surface of the cut-away groove based on a stable and free rotation, so that it is possible to achieve an easier folding operation of the tent.

Abstract: A collapsible canopy frame is provided that includes a first collapsible canopy frame component; a second collapsible canopy frame component; and a fastener connecting the first collapsible canopy frame component to the second collapsible canopy frame component. The first collapsible canopy frame component and the second collapsible canopy frame component each define at least one opening aligned with each other.

Abstract: A collapsible tent skeleton frame includes a plurality of poles, a plurality of joints mounted respectively on the poles, a plurality of side ribs pivoted respectively to the joints, a top joint, and a plurality of upper ribs pivoted respectively to adjacent pairs of the side ribs and to the top joint. Each of the joints has two arms, each of which is formed with a recess that has a round inner end section and an extension. Each of the side ribs has a rounded end that is received in and that conforms to the inner end section of the recess in a respective one of the arms of a respective one of the joints.

Abstract: The present invention provides an improved portable shelter frame having upwardly extending support poles and linkage assemblies connecting the poles. Within the joints of the linkage assemblies are rolling element bearings to reduce joint friction and provide reinforcement support to the shelter frame.

Abstract: The triangular, wedge shaped erectable shelter includes a canopy and a leg assembly supporting the canopy. A perimeter truss linkage assembly is connected to the leg assembly, and each of the perimeter truss pairs includes first and second link members pivotally connected together in a scissors configuration, with the outer end of each first link member connected to the upper end of a leg, and the outer end of each second link slidably connected to the leg. The shelter includes a flexible pole member removably mountable to the upper end of at least one of the legs of the shelter to extend across the shelter and support the canopy of the shelter. The flexible pole member is preferably removably mounted in an indexing hole in a bracket affixed to the upper end of at least one of the legs.

Abstract: A side rail assembly for a canopy having a plurality of uprights is provided that includes a side rail having a first end and a second end with a hook attached to the first end of the side rail; and a mounting bracket mounted on a corresponding one of the uprights. The mounting bracket includes a first side rail connector having a post, such that the hook engages the post to secure the side rail to the mounting bracket.

Abstract: The erectable, collapsible shelter has a canopy with at least three sides and three corners, a leg assembly, and a perimeter truss linkage assembly having a plurality of perimeter truss pairs of link members connected to the leg assembly. The legs preferably have telescoping upper and lower sections with lower section for engagement with ground, and a slider member slidably mounted to the upper section of each of the legs. A canopy peak support assembly is provided that is movable between a raised position and a lowered position, with the canopy peak support assembly supporting the canopy above the top of the leg assembly in the raised position.

Abstract: A collapsible frame assembly having a first supporting frame and a second supporting frame mounted onto the first supporting frame in such a manner as to be movable up and down with respect to the first supporting frame. The frame assembly having three or more lazy tong arrangements pivotally connected to the first and second supporting frames. The frame assembly also has moving mechanisms for extending and retracting the lazy tong arrangements between a retracted position and an extended position that form respectively a collapsed structure and an arch-like freestanding structure.

Abstract: The lightweight erectable canopy shelters include a plurality of legs connected together by an extendible perimeter assembly of link members. In one embodiment, the roof structure is formed by a pole members pivotally mounted to a the upper ends of the legs so as to extend across the shelter, and movable between a lowered position and a raised, upwardly arching position. The pole members are pivotally coupled to a central hub, and each of the pole members comprises pole sections hinged to permit downward folding and upward unfolding until they are fully extended. Corner support strut members are pivotally mounted to the legs, to be rotatable upwardly to engage and support the pole members.

Abstract: A collapsible frame for use in erecting tents, canopies and the like at outdoor venues includes a plurality of telescopic legs for providing vertical structural support, and a plurality of top corner joints each fixedly mounted upon a top end of a corresponding telescopic leg. A leg slider joint is adjustably mounted upon each telescopic leg for sliding along that telescopic leg. A truss pair of link members is mounted to a pair of top corner joints and to a corresponding pair of leg slider joints. The link members are mounted on adjacent pairs of telescopic legs for providing a scissors connector. Finally, a plurality of canopy support arms, each including a locking pivotal connector and each fixedly connected to a top corner joint and a corresponding leg slider joint, is employed for raising and lowering the collapsible frame as a stable unitary structure.

Abstract: A tent frame including: leg posts; a plurality of expandable connectors connected in pairs between adjacent posts, each connector having first and second outer ends and is fixedly connected at the first outer end to the upper end of one post and slidably connected at the second outer end to a lower portion of the same post, each connector movable between extended and folded states; a roof comprising upper poles, each pivotally connected to a post and to a central pole, each upper pole and corresponding central pole are movable between an extended and folded states; and support pole assemblies, each connected at one end to slide with a second outer end and at another end to a central pole so that each connector, upper pole and central pole expand together to the extended state and the support pole assemblies support the central poles to maintain the extended state.

Abstract: A pull pin assembly includes: a first pole having a first hole; a second pole having a second hole, and sliding in the first pole; a main body having a central hollow containing the first pole; a pull pin body extending radially from the central hollow, and having a space extending into the central hollow; a pull pin, having a circumferential stop, disposed in the space to move from a first position extending into the central hollow through the first hole to a second position outside the central hollow; a pull pin plug fit into the space and having a hollow containing the pull pin; and a biasing member biasing the pull pin toward the second first position to lock the first and second poles; wherein the biasing member is disposed to bias the pull pin between the circumferential stop and the pull pin plug.