Yu Zheng

US Patent:

6357510, Mar 19, 2002

Filed:

Apr 6, 1999

Appl. No.:

09/286800

Inventors:

Yu Zheng - Walnut CA

Assignee:

Patent Category Corp. - Walnut CA

International Classification:

E04H 1548

US Classification:

160354, 160351, 160377, 52646, 135143

Abstract:

Collapsible structures are provided that have one or more support frames, each having a foldable frame member that has a folded and an unfolded orientation, with the frame member defining a periphery for the support frame. Where more than one support frame is provided, the support frames can be hingedly coupled to each other. The frame member(s) can be used, for example, to support panel pieces, objects and coverings, among others. In some embodiments, one or more objects can be coupled to and supported by the support frame(s). In other embodiments, a covering may be placed over the support frame(s).

US Patent:

6360761, Mar 26, 2002

Filed:

May 17, 1999

Appl. No.:

09/313147

Inventors:

Yu Zheng - Walnut CA

Assignee:

Patent Category Corp. - Walnut CA

International Classification:

E04H 1544

US Classification:

135126, 135130, 135137, 135 97, 135143, 446478, 446487, 220 93

Abstract:

Collapsible structures are provided having at least four panels, including a bottom panel, a first panel, a second panel and a third panel. Each panel has a foldable frame member having a folded and an unfolded orientation, with a fabric material covering portions of the frame member to form the panel when the frame member is in the unfolded orientation. The fabric assumes the unfolded orientation of the frame member. Each panel further includes a first side and a second side, with the first side of one panel coupled to the second side of an adjacent panel, and with the bottom panel resting on the surface.

US Patent:

6390111, May 21, 2002

Filed:

May 2, 2001

Appl. No.:

09/847248

Inventors:

Yu Zheng - Covina CA

Assignee:

Patent Category Corp. - Walnut CA

International Classification:

E04H 1540

US Classification:

135126, 135128, 135143, 135117

Abstract:

A collapsible play structure comprises one or more play modules connected together, each play module comprising at least three foldable frame members, each having a folded and an unfolded orientation. A fabric material substantially covers each frame member to form a side panel for each frame member when the frame member is in the unfolded orientation. Each side panel further comprises at least three sides. The left side of each side panel is connected and hinged to the right side of an adjacent side panel, and the right side of each side panel is connected and hinged to the left side of another adjacent side panel. The bottom side of each side panel is adapted to rest on a supporting surface to support the play module.

US Patent:

6408461, Jun 25, 2002

Filed:

Apr 21, 2000

Appl. No.:

09/553651

Inventors:

Yu Zheng - Covina CA

Assignee:

Patent Category Corp. - Walnut CA

International Classification:

A47G 906

US Classification:

5417, 5420

Abstract:

A blanket or mat assembly includes a panel having a foldable frame member that has a folded and an unfolded orientation, and a sheet material substantially covering the frame member when the frame member is in the unfolded orientation, with the sheet material assuming the unfolded orientation of its associated frame member. The assembly further includes a covering having a top portion, a peripheral edge, an opening defined by the peripheral edge, and an interior, with the panel retained inside the interior and accessing the interior of the covering via the opening. The covering assumes the configuration of the panel when the panel is retained inside the interior of the covering. The covering and the panel can be twisted and folded to the folded orientation of the frame member to reduce the overall size of the covering and the panel.

US Patent:

6449147, Sep 10, 2002

Filed:

Dec 13, 2000

Appl. No.:

09/736004

Inventors:

Yu Zheng - Walnut CA

Assignee:

Patent Category Corp. - Walnut CA

International Classification:

G06F 116

US Classification:

361683, 361681, 3122571, 3122232, 3122236, 312258, 135 91, 135143

Abstract:

Collapsible structures are provided with enhancements and other features that impart additional utility or amusement value to the basic underlying structure. The collapsible structure has at least one foldable frame member having a folded and an unfolded orientation, and with a fabric material covering portions of the frame member to form a panel when the frame member is in the unfolded orientation. An electrical component can attached to the fabric material, and an electrical coupling connected to the electrical component. Alternatively, a two-dimensional or three-dimensional object can be attached to the fabric material.

US Patent:

6453923, Sep 24, 2002

Filed:

Dec 5, 2000

Appl. No.:

09/730027

Inventors:

Yu Zheng - Walnut CA

Assignee:

Patent Category Corp. - Walnut CA

International Classification:

F04H 1540

US Classification:

135126, 135130, 135143, 135117, 446478

Abstract:

A collapsible structure has at least three foldable frame members, each having a folded and an unfolded orientation. The structure has a fabric material covering portions of each frame member to form a panel for each frame member, with each panel further including a left side, a bottom side and a right side, with the left side of each panel coupled to the right side of an adjacent panel, and the right side of each panel coupled to the left side of another adjacent pane. The bottom side of at least one panel is positioned at a higher vertical level than the bottom side of at least one other panel.

US Patent:

6460556, Oct 8, 2002

Filed:

Mar 30, 2001

Appl. No.:

09/822758

Inventors:

Yu Zheng - Covina CA

Assignee:

Patent Category Corp. - Walnut CA

International Classification:

E04H 1540

US Classification:

135125, 52 63, 52 71, 135128, 135144, 135147

Abstract:

Collapsible structures include at least first and second panels, each panel having a foldable frame member that has a folded and an unfolded orientation, and a material covering portions of the frame member when the frame member is in the unfolded orientation. The first panel has a first retaining mechanism that defines an adjustment space, and the second panel has a second retaining mechanism that is movably received inside the adjustment space of the first retaining mechanism to couple the second panel to the first panel. The second retaining mechanism is movable within the adjustment space to allow the relative positions of the first and second panels to be adjusted. Other collapsible structures include at least first and second panels, each panel having a foldable frame member that has a folded and an unfolded orientation, and a material covering portions of the frame member when the frame member is in the unfolded orientation. A connector couples the first and second panels in a manner that allows the relative positions of the first and second panels to be adjusted.

US Patent:

6461257, Oct 8, 2002

Filed:

Jun 8, 2001

Appl. No.:

09/877949

Inventors:

Yu Zheng - Covina CA

Assignee:

Patent Category Corp. - Walnut CA

International Classification:

A63B 6700

US Classification:

473471, 473472

Abstract:

Collapsible structures are disclosed having a central panel, a first support panel disengageably connected to the left side of the central panel, and a second support panel disengageably connected to the right side of the central panel. Each of the central panel and support panels includes a foldable frame member having a folded and an unfolded orientation, and a fabric material substantially covering the frame member.