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Through-hull connector for boats

a technology for connecting parts and boats, applied in the direction of hulls, vessel construction, pipes, etc., can solve the problems of nut expansion under hoop stress, female threads slipping over the male threads, and one mode of failur

Inactive Publication Date: 2007-07-19
ORCAS MARINE PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of a plastic nut with V threads, one mode of failure is breaking under tensile stress.
Another mode of failure is the nut expanding under the hoop stress, and the female threads slipping over the male threads.
Furthermore, V threads are prone to damage at the thread apex or crown, where the section becomes thin.
Square threads can be machined, but heretofore have been difficult to cast.
None of these connectors discloses a square thread.
None shows any way of minimizing the material required.
None displays any structure for retaining sealant against the flange.

Method used

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Examples

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Embodiment Construction

[0034] Referring now to the drawing, and especially to FIGS. 1-6 thereof, a through-hull connector is shown at 20, and is for use in connection with a hull of a boat (not shown), the hull having an outer surface and an inner surface. The through-hull connector 20 comprises a body 22 extending between opposite first 24 and second 26 ends, and having a central axis. The body 22 has a circular cross-section, an outside surface 28 and a bore 30 through the body 22 from the first end 24 to the second end 26. Threaded fastening means is provided for fastening the through-hull connector 20 to the boat hull. The fastening means has external threads 32 with a generally quadrilateral cross-section, as shown in FIG. 5a as a sharp-edged square thread 32a. FIG. 5b shows the same square thread with radiused edges 32b. FIG. 5c illustrates an embodiment known as an acme thread 32c. FIG. 5d depicts yet another embodiment, this being a buttress thread 32d. While not explicitly rectangular, the acme 3...

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Abstract

A through-hull connector is used in connection with a hull of a boat. The through-hull connector comprises a body extending between opposite first and second ends, and having a central axis. The body has an outside surface and a bore through it. Hose barbs are provided for attaching a conduit to the second end. External threads with a generally quadrilateral cross-section are provided for fastening the through-hull connector to the boat hull. The external threads on the body have a gap extending longitudinally along the outside surface of the body, so as to lighten the connector. A nut engages the external threads. A flange extends outward from the body first end for seating against the hull outer surface. The flange has an annular groove to retain sealant. A notch extends transversely through the body adjacent the second end. The notch engages a screwdriver to hold the body from rotating.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] Not Applicable STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] Not Applicable BACKGROUND OF THE INVENTION [0003] This invention relates to the field of through-hull connectors for boats, and more particularly to a cast stainless steel through-hull connector with square threads. [0004] Through-hull connectors are commonly used on boats to direct wastewater and effluent overboard, and as inlets and outlets for engine cooling water. Commonly used materials for through-hull connectors have been bronze, various plastics, and stainless steel. The through-hull connectors typically have a flange disposed against the outside of the hull, a threaded body passing through the hull, and a flange nut tightened against the inside of the hull. A gasket or bedding compound is employed to waterproof the connection. The flange nut can be made of plastic or metal, but plastic is far less expensive, and does not corrode or gall. The t...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B63B13/00
CPCB63B13/02B63B2231/06F16L41/08B63B2231/40B63B2231/14
Inventor COTTON, OREN
Owner ORCAS MARINE PRODS
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