# US 10,370,892 B2 · Devices and methods for mounting door frames > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,370,892 B2 - Document ID: US10370892B2 - Status: Granted - Kind: B2 - Application number: 15/455,741 - Filed: 2017-03-10 - Published: 2017-09-14 - Granted: 2019-08-06 - Earliest claimed: 2016-03-11 - Assignees: Masonite Corporation - Applicants: Masonite Corporation - Inventors: Patrick C. Ege; Roldan Vazquez; William W. Kling - Web page: https://patentgrep.com/patent/US10370892B2 ## CPC - E06B 3/26: Compound frames, i.e. one frame within or behind another (E06B3/28 takes precedence; arrangements of movable frames E06B3/32) - E04F 21/0015: {for mounting frames} - E05D 1/02: made of one piece - E06B 1/045: {with separate wing abutment strips, e.g. adjustable; Door stops (sealing arrangements E06B7/16)} - E06B 1/30: composed of several parts with respect to the cross-section of the frame itself - E06B 1/52: Frames specially adapted for doors - E06B 1/56: Fastening frames to the border of openings {or to similar contiguous frames (E06B1/003 takes precedence)} - E06B 3/96: Corner joints or edge joints for windows, doors, or the like frames or wings {(E06B3/663 takes precedence)} - E05Y 2900/132: Doors - E06B: FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES (shades or blinds for greenhouses A01G9/22; curtains A47H; lids for car boots or bonnets B62D25/10; skylights E04B7/18; sunshades, awnings E04F10/00) - E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B) - E05D: HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS (pivotal connections in general F16C11/00) - E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF ## Abstract The present invention relates to a door frame, particularly a door frame for a pre-hung door assembly, which is foldable to minimize storage space and to allow for enhanced logistic efficiencies. The door frame contains parallel, spaced apart, vertical jambs and a horizontal header connecting the top ends of the jambs. Each of the jambs and the horizontal header contains a front section and back section that are hingedly joined so that then can be folded on to each other. The hingedly joined front and back sections allow the door fame to be foldable to minimize space occupied during storage. ## Claims ### Claim 1 A door frame, comprising: a hinge side jamb parallel to a lock side jambs and a horizontally extending header jamb, said hinge side and lock side jambs being spaced apart and vertically extending, said horizontal header jamb connected to top ends of the hinge side and lock side jambs, each of the jambs has a front section and an adjacent back section, a hinge joins said front and back sections so that said front sections and said back sections are configured to be folded onto each other when oriented in a folded position, each of said hinge side jamb, said lock side jamb, and said header jamb includes a door stop, all of the door stops positioned on the associated back section, a channel configured in each of said hinge side jamb, said lock side jamb, and said header jamb between the back section and said door stop, each front section of said hinge side jamb, said lock side jamb, and said header jamb includes a protrusion, each protrusion configured to fit into the associated channel to interlock the front section to the associated back section when said front sections and said back sections are oriented in an opened position. ### Claim 2 (depends on 1) The frame of claim 1, wherein said jambs have a reduced thickness portion forming said hinge. ### Claim 3 (depends on 2) The frame of claim 2, wherein each of said jambs comprises plastic or composite material. ### Claim 4 (depends on 1) The frame of claim 1, wherein said hinge is a tape, a strap, or a bifold hinge. ### Claim 5 (depends on 1) The frame of claim 1, wherein said hinge side jamb and said lock side jamb comprise polymer composite or wood composite. ### Claim 6 (depends on 1) The frame of claim 1, wherein said hinge is configured to allow each front section to be folded onto the associated back section. ### Claim 7 (depends on 1) The frame of claim 1, wherein said hinge side jamb and said lock side jamb are flat jambs. ### Claim 8 (depends on 1) The frame of claim 1, wherein the door stop contains a tongue and each back section contains a groove, the tongue configured to fit into the groove. ### Claim 9 (depends on 1) The frame of claim 1, further comprising a substitute kit having a substitute front section for each of the jambs and the header, the substitute front section configured to replace its respective the front section to increase or decrease the depth of the frame in its opened position. ### Claim 10 (depends on 9) The frame of claim 9, wherein the substitute front sections have a depth that is different than the depth of the front section. ### Claim 11 (depends on 9) The frame of claim 9, wherein the substitute kit further comprising fasteners for securing the substitute front and back sections together. ### Claim 12 (depends on 1) A pre-hung door assembly, comprising: a. the door frame of claim 1; and b. a door slab mounted to the hinge side jamb. ### Claim 13 (depends on 12) The pre-hung door assembly of claim 12, wherein said hinge is one of a bi-fold hinge, a living hinge integral with the associated jamb, and a resilient member. ### Claim 14 (depends on 12) A method for installing a pre-hung door assembly, comprising the steps of: a. providing the pre-hung door assembly of claim 12; b. unfolding the front and back sections of the jambs such that the protrusions fit into the channels to form an interlock; and c. inserting and securing the unfolded pre-hung door assembly into a wall opening. ### Claim 15 (depends on 1) The frame of claim 1, wherein each protrusion contains a beveled edge configured to allow the back section to slide into the channel. ### Claim 16 (depends on 1) The frame of claim 1, wherein each channel extends partially through the associated jamb and each protrusion extends from a portion of the associated jamb. ### Claim 17 (depends on 16) The frame of claim 16, wherein the channels are oriented on a first side of the frame and the hinges are on an opposite second side of the frame. ### Claim 18 (depends on 1) The frame of claim 1, wherein there are a plurality of hinges for each jamb. ### Claim 19 (depends on 1) The frame of claim 1, wherein each channel extends inwardly into the associated jamb and each protrusion extends outwardly from the associated jamb into the associated channel. ### Claim 20 (depends on 1) The frame of claim 1, wherein each protrusion has a portion abutting a face of the associated channel.