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US 4,732,105 AGranted
Boat anchor
OwnerRoger Fisherinventor
Life of this patent
Estimating the term…
Abstract
A boat anchor (10) includes three runners (11, 12, 13) having respective rear spikes (18, 19, 20) and front spikes (22, 23) for penetrating bottom material such as hard sand or mud. A bail (30) rolls the anchor onto the hooks. Flukes (32-36) are positioned on the runners (11, 12, 13) and induce drag through the bottom material which limits the movement of the anchor.
Claims11
A boat anchor for holding in bottom material such as sand and mud, and comprising:
- (a) first and second elongate, longitudinally extending runners, a one end of each of said runners defining a rear spike and the other one of each of said runners defining a front spike whereby substantially translational movement of the runners relative to the bottom drives the front and rear spikes into the bottom material, said rear spikes defining an acute angle and said front spikes defining an obtuse angle relative to the runner intermediate said rear and front spikes;
- (b) at least one transversely extending tie bar to which said first and second runners are secured in spaced-apart registration with each other;
- (c) means for attaching the anchor to a line.
A boat anchor for holding in bottom material such as sand and mud, and comprising:
- (a) first, second and third elongate, longitudinally extending runners, a one end of each of said runners defining an acutely angled rear spike and the other end of at least two of said runners defining an obtusely angled front spike whereby substantially translational movement of the runners relative to the bottom drives the front and rear spikes into the bottom material, said rear spikes defining an acute angle and said front spikes defining an obtuse angle relative to the runner intermediate said rear and front spikes;
- (b) a plurality of transversely extending tie bars to which said first and second runners are secured in spaced-apart registration with each other;
- (c) means for attaching the anchor to a line and comprising a front ring cooperating with a front end of one of said runners and a rear ring cooperating with a rear end of one of said runners, each ring adapted to receive a separate line whereby if the anchor fouls in bottom material it can be pulled in either or both of two directions as necessary to free it;
- and
- (d) including flukes positioned on portions of at least some of said runners, said flukes comprising drag resisting plates conformed to the shape of the portion of the runner on which it is positioned and having a side defining a flat surface transverse to the runner for presenting the flat surface side in the direction of anchor movement to resist movement of the anchor through the bottom material.
2 more elements
Dependencies are inferred from the claim text.