Handling: hand and hoist-line implements – Hand bars and hand barrows – Ball retriever
Patent
1997-04-08
1998-10-13
Kramer, Dean
Handling: hand and hoist-line implements
Hand bars and hand barrows
Ball retriever
294 8219, 294 8224, 245991, B63B 2154
Patent
active
058201815
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a snap-hook making it possible to secure a rope to a distant fixed point or to release this rope from this fixed point, also from a distance.
It is often necessary, especially in boating, to secure something in this way to a fixed point lying some distance away. This situation arises for example when a boat is to be made fast to an anchor buoy, to a quay equipped with rings or with railings, or to the rungs of a ladder in a lock.
It may in practice be difficult, dangerous or even impossible to get near to the fixed point in order to tie or pass the rope directly around said fixed point.
The use of snap-hooks for securing in this way is known. These snap-hooks make it easier to secure or to release the rope but still have to be manoeuvered manually in order to be opened and to be held in the open position, which means getting near to this fixed point. The aforementioned problem is therefore not solved.
American Patent U.S. Pat. No. 2,492,991 describes a snap-hook for a parachute harness. The tilting finger for closing or for opening this snap-hook comprises a lever which can pivot about an axis perpendicular to the plane of the snap-hook, which is equipped with a transverse bar capable of bearing or of not bearing on the outer edge of the body of the snap-hook depending on the position of the lever with respect to the tilting finger. When this bar comes to bear against the outer edge of the body of the snap-hook this allows the finger to be tilted into the position in which the snap-hook is partially open.
The lever on this snap-hook is intended only to be actuated manually, and not from a distance. In particular, the opening that the free end of the lever comprises serves only to allow the attachment of a tab to be grasped by hand, and is not shaped to allow the snap-hook to be transported toward a distant securing point, or to allow the lever to be manoeuvered from a distance.
This snap-hook is therefore unable to allow securing from a distance as indicated hereinabove.
Furthermore, the partial opening of this snap-hook does not in any way allow engagement over a distant securing point.
The present invention aims to overcome these drawbacks by providing a snap-hook which can be transported, engaged over the securing point and manoeuvered from a distance, this snap-hook furthermore having to remain simple and quick to use, be easy to open, even from a distance, be able to be actuated especially with a conventional boat-hook very often used in boating, and be simple to manufacture.
This snap-hook in of the type described by the aforementioned American patent, comprising a lever the free end of which projects beyond the body of the snap-hook and has an opening.
According to the invention, this opening has a rounded shape on the same side as the end of the lever and has dimensions which on the one hand allow the engagement of the end of a rod for transporting and actuating the lever from a distance, this rod being equipped at this end with a shoulder, especially the stud conventionally to be found at the end of a boat-hook used in boating and, on the other hand, allow the lever to be pivoted with respect to this rod in a plane parallel to the plane of the snap-hook.
By virtue of this opening, the lever according to the invention can be engaged over the end of the rod, especially on the aforementioned stud of a boat-hook, until it rests against said shoulder.
The pivoting of the end of the rod in the opening of the lever allows an axial thrust to be exerted on the rod and/or a pull to be exerted on the rope attached to the snap-hook in order to shift the lever and cause the finger of the snap-hook to tilt into the open position.
The rounded shape of the opening allows the lever, when it is in the pivoted position, to come to rest against either side of the end part of the rod, especially the base of the stud of a boat-hook, in a position which is at an angle with respect to this part. This resting has the effect of perfectly immobilizing the snap-ho
REFERENCES:
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patent: 997630 (1911-07-01), Lozenski
patent: 1545377 (1925-07-01), Westmoreland
patent: 2349021 (1944-05-01), Truesdale et al.
patent: 2492991 (1950-01-01), Hanna
patent: 3008210 (1961-11-01), Stovern
patent: 3213508 (1965-10-01), Vigerhed
patent: 3922028 (1975-11-01), Svennson et al.
patent: 4595223 (1986-06-01), Hawie
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