# US 8,739,718 B2 · Boat door and method of making

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- Number: US 8,739,718 B2
- Document ID: US8739718B2
- Status: Granted
- Kind: B2
- Application number: 13/437,926
- Filed: 2012-04-02
- Published: 2012-11-15
- Granted: 2014-06-03
- Earliest claimed: 2009-01-02
- Applicants: Charles Preston Gros
- Inventors: Charles Preston Gros
- Web page: https://patentgrep.com/patent/US8739718B2

## CPC

- B63B 19/08: Ports or like openings in vessels' sides {or at the vessels' bow or stern (forming ramps when open B63B27/143)}
- B63B 83/00: Rebuilding or retrofitting vessels, e.g. retrofitting ballast water treatment systems
- B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06)

## Abstract

A boat hull having a door and a method of making the door, which can swing to an open position and closed position. The door can be used for entering or exiting the boat. The door can remain closed with a door lock assembly and door strike. An outer door frame and gussets provide support for the hull and door.

## Claims

### Claim 1

A boat hull (10), comprising:
a hinge (20) hingedly secured to a rear edge (70) of a boat door (15);
a first lower edge (75) extending downwardly from the rear edge (70);
a second lower edge (77) extending upwardly from said first lower edge (75) to a front edge (80);
a door lock assembly (50) lockingly engaged with a door strike (30);
an inner door frame (60) extending inwardly from the boat hull (10);
a first door gusset (55) immediately adjacent to said inner door frame (60) near the rear edge (70); and
a hull gusset (90) immediately adjacent to the inner door frame (60) near the second lower edge (77).

### Claim 2 (depends on 1)

The apparatus of claim 1, further comprising:
the inner door frame (60) extending inwardly from the door (15).

### Claim 3

A method of making a boat door (300), comprising the steps of:
using weld penetration lines as a reference and layout the door frames on the outside of the hull (310);
cutting an inner door frame loose from the hull (320);
clearing excess material away from edges of said inner door frame and an outer door frame and welding said edges (330);
grinding an exterior weld smooth (340);
installing a hinge on said outer door frame (350);
fitting said boat door and mounting said hinge to said inner door frame (360);
preassembling and welding said inner door frame and said outer door frame (410);
welding said preassembled inner door frame and said outer door frame to the hull (420); and
adding door and hull gussets (430).