# US 2023/0265709 A1 · Bullet-resistant door > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0265709 A1 - Document ID: US20230265709A1 - Status: Published application - Kind: A1 - Application number: 17/652,459 - Filed: 2022-02-24 - Published: 2023-08-24 - Earliest claimed: 2022-02-24 - Assignees: Brentwood Manufacturing Company, Inc. - Applicants: Brentwood Manufacturing Company, Inc. - Inventors: Drew Joseph Andary; Fred Joseph Andary, JR. - Web page: https://patentgrep.com/patent/US20230265709A1 ## CPC - E06B 5/10: for protection against air-raid or other war-like action; for other protective purposes - E06B 3/7015: {characterised by the filling between two external panels (fireproof doors E06B5/16; noise insulating doors E06B5/20)} - E06B 3/825: {with a wooden frame} - F41H 5/24: for stationary use, e.g. fortifications {; Shelters; Guard Booths (air-raid shelters E04H9/04)} - E06B 2003/7051: {of layered construction involving different materials} - E06B 2003/7061: {Wooden frames} - 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) - F41H: ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL ## Abstract A bullet-resistant door includes a wooden frame forming a perimeter structure and protective layers that are collectively secured within the wooden frame. Such protective layers include: bullet-resistant panels that are made of a base material having embedded fibrous material and that are at least semi-rigid; and bullet-resistant sheets of a woven high-strength pliable fabric. In addition, a substantially hollow core that is at least ½ inch thick is provided between the protective layers ## Claims ### Claim 1 A bullet-resistant door, comprising: (a) a wooden frame forming a perimeter structure; (b) a plurality of protective layers that are collectively secured within said wooden frame and that include: (i) plural bullet-resistant panels made of a base material that has embedded fibrous material, said bullet-resistant panels being at least semi-rigid, and (ii) plural bullet-resistant sheets of a woven high-strength pliable fabric; and (c) a substantially hollow core that is at least ½ inch thick and is disposed between said protective layers. ### Claim 2 (depends on 1) A bullet-resistant door according to claim 1, wherein said bullet-resistant panels comprise woven fiberglass. ### Claim 3 (depends on 1) A bullet-resistant door according to claim 1, wherein said base material comprises thermoset resin. ### Claim 4 (depends on 1) A bullet-resistant door according to claim 1, wherein said woven high-strength pliable fabric comprises fibers made of a synthetic aromatic polyamide polymer. ### Claim 5 (depends on 1) A bullet-resistant door according to claim 1, wherein said woven high-strength pliable fabric comprises fibers made of poly-para-phenylene terephthalamide. ### Claim 6 (depends on 1) A bullet-resistant door according to claim 1, wherein said protective layers comprise, from front to rear: a first one of said plural bullet-resistant panels, said plural bullet-resistant sheets of said woven high-strength pliable fabric, and a second one of said plural bullet-resistant panels. ### Claim 7 (depends on 1) A bullet-resistant door according to claim 1, wherein said wooden frame includes a thicker outer portion and a thinner inwardly extending portion. ### Claim 8 (depends on 7) A bullet-resistant door according to claim 7, wherein a first one of said plural bullet-resistant panels is attached to a first side of said thinner inwardly extending portion, and a second one of said plural bullet-resistant panels is attached to a second side of said thinner inwardly extending portion, said first and second sides being opposite sides of said thinner inwardly extending portion. ### Claim 9 (depends on 8) A bullet-resistant door according to claim 8, wherein said thinner inwardly extending portion includes an innermost edge, and wherein said substantially hollow core is interior to, and within a same depth range as, said innermost edge. ### Claim 10 (depends on 7) A bullet-resistant door according to claim 7, wherein a first one of said plural bullet-resistant panels is secured to said thinner inwardly extending portion with a plurality of screws. ### Claim 11 (depends on 10) A bullet-resistant door according to claim 10, wherein said screws are provided around the entire perimeter of said first one of said plural bullet-resistant panels, with adjacent screws being not more than 9 inches apart on average. ### Claim 12 (depends on 1) A bullet-resistant door according to claim 1, wherein at least one of said plural bullet-resistant sheets of said woven high-strength pliable fabric is held in place, across at least 75% of its surface area, solely by pressure from adjacent ones of said plurality of protective layers. ### Claim 13 (depends on 1) A bullet-resistant door according to claim 1, wherein said plural bullet-resistant sheets of said woven high-strength pliable fabric include a first one of said bullet-resistant sheets that has been bonded in place, as well as second and third ones of said bullet-resistant sheets that are held in place either solely, or almost entirely, by pressure. ### Claim 14 (depends on 1) A bullet-resistant door according to claim 1, wherein said substantially hollow core comprises a honeycomb-shaped structure. ### Claim 15 (depends on 14) A bullet-resistant door according to claim 14, wherein said honeycomb-shaped structure is comprised of at least one fiberboard or cardboard. ### Claim 16 (depends on 1) A bullet-resistant door according to claim 1, further comprising a bullet-resistant elongated strip, at least 24 inches long, that is at least semi-rigid and is embedded within a bottom segment of said wooden frame. ### Claim 17 (depends on 1) A bullet-resistant door according to claim 1, wherein said wooden frame has a maximum thickness of between 1 ½ - 2½ inches. ### Claim 18 (depends on 1) A bullet-resistant door according to claim 1, wherein said substantially hollow core is at least ¾ inch thick. ### Claim 19 (depends on 1) A bullet-resistant door according to claim 1, wherein said wooden frame has a height of at least 78 inches. ### Claim 20 (depends on 1) A bullet-resistant door according to claim 1, wherein said plural bullet-resistant panels collectively are at least 0.55 inch thick.