Patents by Inventor Rob van den Haak

Rob van den Haak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5640921
    Abstract: Anchor fluke comprising a bottom side and an upper side and a longitudinal plane of symmetry, the upper side being defined by two convexly bent faces, formed by faces ascending in a convex manner from the sharp front edge in a symmetrical fashion relative to the longitudinal plane of symmetry twoards the rear and sidewards upto an apex line, by surfaces connecting smoothly thereonto in that location and descending in a symmetrical and convex fashion rearwards and towards the sides.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: June 24, 1997
    Assignee: Vrijhof Ankers Beheer B.V.
    Inventors: Rob Van Den Haak, Gijsbertus Degenkamp
  • Patent number: 5546884
    Abstract: Anchor fluke, being formed as to have a penetration or front-side and a rear side, as well as a longitudinal plane of symmetry intersecting these sides, the anchor fluke comprising first device for attachment of an anchor line for use in a vertical anchoring system and a second device for attachment of at least two connecting lines spaced in the longitudianl plane of symmetry so as to connect the fluke to a pulling or penetration anchor line, the fluke being so formed that at least its upper surface has a shape convexly curved or buckled in cross-section along the plane of symmetry, the first attachment device for the anchor line for a vertical anchoring system being located near the center of area of the fluke.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 20, 1996
    Assignee: Vrijof Ankers Beheer B.V.
    Inventor: Rob Van Den Haak
  • Patent number: 5546883
    Abstract: Method for anchoring an object in a body of water having a ground-like bottom, in which an anchor, comprising a fluke with upper surfaces having a center location and a shank, which obliquely extends upwards and forwards from the fluke and is connected by a first end to the fluke and can be attached by a second end to a penetration or pulling line, is pulled into the bottom ground by a pulling line, and wherein the anchor, after the fluke has penetrated the bottom ground to a sufficient extent, is attached by an anchor line to the object, the point of engagement of the anchor line being located above the center location of the upper surfaces of the fluke and the pulling force exerted thereon via the anchor line being essentially directed vertically.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: August 20, 1996
    Assignee: Vrijhof Ankers Beheer B.V.
    Inventor: Rob van den Haak
  • Patent number: 5540175
    Abstract: An anchor comprising a fluke means with upper surfaces having a center of area and a front end or penetration end and a rear end, and a shank means, being connected at a first end to the fluke means and, being provided at a second end with first means for attachment to an anchor or pulling line, said shank means being attached by means of at least one hinged joint to the fluke means at a location at a distance of the center of area, and being attached by means of a disconnectable connection to the fluke means in a location on the other side of the center of area with respect to the hinged joint, said hinged joint being located at a location towards the front at a distance of the center of area and operating means being present for effectuating the disconnection of the disconnectable connection by remote control.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 30, 1996
    Assignee: Vrijof Ankers Beheer B.V.
    Inventor: Rob Van Den Haak
  • Patent number: 4995326
    Abstract: An anchor comprising a fluke and a shank assembly, the latter including at one end, located at the front of the anchor, an element for attaching an anchor cable and being joined to the fluke at the other end, the fluke extending along a major plane and the shank assembly comprising two substantially elongated plate-shaped shank members which are joined at the one end and define inbetween a passage for anchor soil, wherein at least one element connecting the two shank members has been arranged in the passage. In order to improve the anchor's rigidity, the connecting elements each comprise one pair of crossing connecting parts, each part extending from the one shank member to the other shank member and comprising two portions arranged on either side of the point where the connecting parts cross. Also the passage for anchor soil through the anchor has been enhanced.
    Type: Grant
    Filed: November 30, 1989
    Date of Patent: February 26, 1991
    Inventor: Rob van den Haak
  • Patent number: 4889065
    Abstract: A method for pulling an anchor line through a pretensioner adapted to act as a cable or chain stopper and to be deeply submerged so that the line is tensioned at a favorable low incline with respect to the ocean bottom.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: December 26, 1989
    Inventor: Rob van den Haak
  • Patent number: 4869193
    Abstract: A device for an anchor comprising an anchor shank, which anchor is to be handled by means of a chaser. The chaser is paid out to the anchor along an anchor line on a separate chaser line and seized on the anchor. The device comprises means arranged for turning the anchor with the chaser resting on an abutment provided on said means. The means is included in the assembly of said shank and the anchor line, thus allowing an in-line, arrangement of said means, the shank and the anchor line.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: September 26, 1989
    Inventor: Rob van den Haak
  • Patent number: 4724789
    Abstract: A chaser of a hook type for laying-out and weighing an anchor and intended for tensioning of an anchor line to an embedded anchor.
    Type: Grant
    Filed: October 28, 1986
    Date of Patent: February 16, 1988
    Inventor: Rob van den Haak
  • Patent number: 4706595
    Abstract: An anchor having a V-shaped twin shank with its legs composed of flat shapes in planes substantially parallel to the fluke so that the soil moves as through a tunnel for sliding penetration which is kept in a straight course due to stabilizer ear plates at a forwardly opening angle at the rear corners of the fluke.
    Type: Grant
    Filed: April 22, 1985
    Date of Patent: November 17, 1987
    Inventor: Rob van den Haak
  • Patent number: 4526123
    Abstract: An anchor rack with a davit post pivoted on deck to pivot in a vertical plane and supporting a jib provided with a fang to catch and carry an anchor at its shackle pin which is intercepted when hauling the anchor line to the davit and then pivoting the davit post with jib from an outboard extended position with the anchor payed out to a retracted position inboard with the anchor racked, and with a pulley on top of the davit post to pass the anchor line to the winch.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: July 2, 1985
    Inventor: Rob van den Haak
  • Patent number: 4394842
    Abstract: An anchor having a twin fluke comprising closed hollow double-plate fluke structures, a shank hinged between the flukes substantially in the gravity center of the fluke, fluke angle delimiters on either side of the hinge, rear stabilizers at the side edges of the fluke, front stabilizers in the form of forwardly and outwardly diverging fluke finger tips, and wings connecting the fluke angle delimiters and each of the rear stabilizers, the wings diverge rearwardly and converge outwardly towards the rear stabilizers. In the preferred embodiment of the invention, the wings are located substantially rearwardly of the fluke with the rear stabilizers diverging rearwardly and inwardly to their intersection with the wings.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: July 26, 1983
    Inventor: Rob van den Haak
  • Patent number: 4300467
    Abstract: An anchor adapted to develop high holding power in both hard and soft anchoring ground due to flaps which are retracted within the fluke area in hard ground and extended outside the fluke area in soft ground.
    Type: Grant
    Filed: March 16, 1979
    Date of Patent: November 17, 1981
    Inventor: Rob van den Haak
  • Patent number: 4154186
    Abstract: An anchor having a two-handed fluke, the two hands thereof being separated by a slot in which the anchor shank is mounted for slewing to each side of the fluke on a pivot which substantially coincides with the geometric center of the fluke surface area and is journaled in a pivot box formed by side plates on the inner edges of the fluke hands and head plates connecting the side plates and delimiting the slewing angle of the shank, and having rear stabilizers on the outer edges of the fluke hands, and the fluke hands each having a pair of outwardly curved finger tips on which flange plates with upstanding tips are arranged forming front stabilizers.
    Type: Grant
    Filed: June 15, 1978
    Date of Patent: May 15, 1979
    Inventor: Rob van den Haak
  • Patent number: 4089288
    Abstract: In an anchor the stabilization arms transversely extending in the plane of the flukes are constructed as bars of quadrilateral cross-section having forwardly directed faces forming an acute angle with each other instead of rod-shaped. These bars are so formed that with a considerably smaller length of the stabilization arms the same stabilizing effect is obtained.
    Type: Grant
    Filed: October 5, 1976
    Date of Patent: May 16, 1978
    Inventor: Rob van den Haak
  • Patent number: 3964421
    Abstract: An anchor provided with a shank which is pivotally connected to a hollow fluke construction near the center of gravity of the fluke construction, characterized in that the fluke construction is formed as a peripherally closed, substantially delta-shaped blade having a forwardly converging hydrofoil section with a forwardly and downwardly bending configuration terminating in a sharp front edge, and a truncated rear portion, and having a central opening for receiving the shank.
    Type: Grant
    Filed: April 28, 1975
    Date of Patent: June 22, 1976
    Inventor: Rob van den Haak