# US 7,464,656 B2 · Attachment device releasable under a load for a trapeze harness used in sailing

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- Number: US 7,464,656 B2
- Document ID: US7464656B2
- Status: Granted
- Kind: B2
- Application number: 11/578,808
- Filed: 2005-04-12
- Published: 2007-12-20
- Granted: 2008-12-16
- Earliest claimed: 2004-04-23
- Assignees: Wichard; Ecole Nationale de Voile
- Inventors: Arnaud Garin; Florence Lebrun; Philippe Delhaye
- Web page: https://patentgrep.com/patent/US7464656B2

## CPC

- B63H 9/1007: {Trapeze systems (harnesses for windsurfers B63H8/54, B63H8/56)}
- B63H 8/58: Spreader bars; Hook connection arrangements
- B63H: MARINE PROPULSION OR STEERING (propulsion of air-cushion vehicles B60V1/14; specially adapted for submarines, other than nuclear propulsion, B63G; specially adapted for torpedoes F42B19/00)

## Abstract

The device includes a planar body (3) secured to a harness bar (2), a hook (10) pivotably mounted on the front portion of the body (3) about a pin (9) transversal to the body, wherein said hook comprises a pointed end (13) on the rear side thereof, a hairpin spring (15) with the facing ends of the branches thereof engaged in apertures (16) of the body that are offset so as to rotate the entire spring unit forwards, and such that the central portion of the spring (15) locks the hook (10) by engaging same at the rear of the pointed end (13) thereof, and a lever (11), hinged to the body (3) about a pin (17) parallel to the pin (9) of the hook (10) and located above same, comprising an upper portion (18), above the pin (17), facing upwards and forwards and a lower portion (19) facing downwards and rearwards, the lower end of which engages the forward-facing surface of the branches of the hairpin spring (15).

## Claims

### Claim 1

An attachment device releasable under load for a trapeze harness used in sailing, which comprises:
a planar body secured to a harness bar, receiving a set of straps which a crew member can put on with the harness bar against his abdomen, the body being positioned in a longitudinal median plane of the bar and facing forward,
a hook mounted pivotably on a front portion of the body about a pivot pin transverse to the body, this hook including a downwardly hooked curved portion on a front face under the pivot pin, and a depression on the rear face that opens downward,
a hairpin spring of which two ends of branches, facing each other, are engaged in apertures of the body that are offset and thus tend to make the spring pivot forward, in such a way that a central part of the spring locks the hook by bearing on a depression of the point of the hook, and
a lever hinged to the body about a pin parallel to the pin of the hook and located above the latter, having an upper portion above the pin facing upward and forward and a lower portion facing downward and rearward, whose lower end bears on a forward facing surface of the branches of the hairpin spring.

### Claim 2 (depends on 1)

The device as claimed in claim 1, wherein the pivot pin of the hook is mounted transversely in a cylindrical part, which itself is mounted pivotably in the body about an axis orthogonal to the pivot pin of the hook.

### Claim 3 (depends on 2)

The device as claimed in claim 2, wherein a lower face of the body has a U-section opening downward, into which the hook is inserted in its locked position by the spring.

### Claim 4 (depends on 1)

The device as claimed claim 1, wherein the body is in the general shape of a C opening forward, between whose branches is mounted a support for the pivoting of the hook.

### Claim 5 (depends on 1)

The device as claimed in claim 1, wherein the pin of the lever is mounted in an elongate aperture formed in the body and oriented vertically and from a front to a back, a depression formed in the lower portion of the body being positioned substantially in an extension of this aperture, a lower end of the lever being designed to be engaged in this depression when the hook is in an open position and when the spring is in a retracted position.