Doors and methods for reducing telegraphing therefor

Patent metadata

Field	Value
Publication number	US-11739587-B2
Application number	US-202217886919-A
Country	US
Kind code	B2
Filing date	Aug 12, 2022
Priority date	Oct 19, 2018
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

This invention relates to doors having internal blocking components that reduce or eliminate telegraphing of the outer surface of the door facings. In particular, the invention relates to steel-edge steel doors that have internal solid wood blocks that have one or more integral cantilever beams formed into the blocks to interact with the adjoined oppositely arranged door facings in order to eliminate visually apparent door telegraphing. The blocks are modified to contain notches formed therein to form the cantilever beams.

First claim

What is claimed is:

1. A method for making a steel-edge door, the method comprising the steps of:
providing a horizontally extending top rail;
providing a horizontally extending bottom rail spaced from and parallel to the top rail;
positioning first and second door facings on opposing sides of the rails, each of the door facing having a steel edge extending perpendicularly to the rails; and
positioning a stile block adjacent to the edge intermediate the top and bottom rails, wherein the stile block has
a top surface facing the top rail,
a bottom surface opposing the top surface and facing the bottom rail,
at least two first parallel notches, each of the at least two first parallel notches is formed in the top surface, extends away from the top rail, and terminates remote from the bottom surface, and
at least two second parallel notches, each of the second parallel notches formed in the bottom surface, extends away from the bottom rail, and terminates remote from the top surface.

2. The method of claim 1 , wherein the stile block extends a portion of the length of the edge.

3. The method of claim 1 , further comprising the step of providing a lock block, the stile block is disposed between the lock block and the edge.

4. The method of claim 1 , wherein the notches extend parallel to each other and to the door facings.

5. The method of claim 1 , wherein the notches have a uniform length.

6. The method of claim 1 , wherein the notches have a uniform width.

7. The method of claim 1 , wherein the notches extending from the top and bottom surfaces are longitudinally aligned.

8. The method of claim 1 , wherein the stile block contains a cutout section along its length at an edge thereof, and one of the notches extends along the cutout section.

9. The method of claim 8 , wherein the cutout section has a width and a height of about 20% to about 45% of the width of the stile block.

10. The method of claim 1 , further comprising the step of providing a core between the facings.

11. The method of claim 10 , wherein the core comprises one or more of polyurethane foam, polystyrene foam, minerals, or cardboard.

12. The method of claim 1 , further comprising the step of providing a first thermal barrier between the edge of the first door facing and the second door facing, and a second thermal barrier between the edge of the second door facing and the first door facing.

13. The method of claim 1 , further comprising the step of providing a blocking component between the door facings.

14. The method of claim 13 , wherein the blocking component comprises at least two notches therein extending parallel to the door facings.

15. The method of claim 14 , wherein the blocking component comprises a first surface and a second surface opposing the first surface, said at least two notches formed in each surface and extending parallel to the door facings.

16. The method of claim 15 , wherein the notches of the blocking component extend parallel to each other.

17. The method of claim 15 , wherein at least two notches extend from the first surface of the blocking component and at least two notches extend from the second surface of the blocking component.

18. The method of claim 1 , wherein each of the door facings comprises a major surface, the edge extends approximately perpendicular from the major surface.

19. The method of claim 1 , wherein the stile block is formed from wood.

Assignees

• Masonite Corp

Inventors

• Balthazor Kurt L
• Marvel Michael J
• Mayfield Dale W
• Swartzmiller Steven B

Classifications

• E06B3/725 Primary

  with separate hollow frames, e.g. foam-filled · CPC title

• E06B3/76

  with metal panels {(E06B3/721 - E06B3/725 take precedence)} · CPC title

• E06B3/7001

  Coverings therefor; Door leaves imitating traditional raised panel doors, e.g. engraved or embossed surfaces, with trim strips applied to the surfaces · CPC title

• E06B2003/704

  of mineral material which is not further specified · CPC title

• E06B2003/7023

  of foam type · CPC title