US3780688A - Anchor having improved fluke crown coupling - Google Patents

Anchor having improved fluke crown coupling Download PDF

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Publication number
US3780688A
US3780688A US00178233A US3780688DA US3780688A US 3780688 A US3780688 A US 3780688A US 00178233 A US00178233 A US 00178233A US 3780688D A US3780688D A US 3780688DA US 3780688 A US3780688 A US 3780688A
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US
United States
Prior art keywords
crown
fluke
coupled
anchor
flukes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00178233A
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English (en)
Inventor
D Hungerford
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brunswick Corp
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Brunswick Corp
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Filing date
Publication date
Application filed by Brunswick Corp filed Critical Brunswick Corp
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Publication of US3780688A publication Critical patent/US3780688A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
    • B63B21/24—Anchors
    • B63B21/38—Anchors pivoting when in use
    • B63B21/44—Anchors pivoting when in use with two or more flukes

Definitions

  • ABSTRACT An anchor for marine vessels having an improved fluke which is remove-ably coupled. to the crown [58] Field 207 208 sembly by a longitudinal flange disposed along the fluke inside edge.
  • the removeable flukes allow the shank pivot shaft to be removeably coupled through the crown wall adjacent the fluke flanges.
  • This invention relates generally to twin-fluke anchors, and more specifically to an improved fluke and crown assemblage for providing removeable flukes with no reduction in the anchor holding strength.
  • Applicants invention provides a fluke and crown assemblage having increased strength which requires no welding and permits the use of light weight materials in construction and allows disassembling of the anchor elements for storage, shipping, or repair.
  • An anchor for marine vessels having an improved fluke and crown coupling comprising a crown having a pair of flanged receiving side wall portions, a shank, a shank pivot shaft coupled to said crown and said shank, a pair of flukes each having a flanged inside edge interlocked to said crown flange receiving portions and a stock coupled to the bottom edges of said flukes.
  • the flukes are removeable from the crown side walls.
  • the shank pivot shaft may be coupled to the crown through the crown side walls.
  • Yet still another object of this invention is to provide an anchor that may be disassembled for shipping, storage, or repairs.
  • Still yet another object of this invention is to provide an anchor having an improved shank pivot axis position.
  • FIG. 1 is a perspective view of Applicants invention.
  • FIG. 2 is an exploded view of Applicants invention.
  • FIG. 3 is a close-up perspective view of the crownfluke coupling of Applicants invention.
  • FIG. 4 is a cross-section elevation of the crown-fluke coupling of Applicants invention.
  • FIG. 5 is a cross-section elevation of an alternate crown-fluke coupling in accordance with Applicants invention.
  • FIG. 6 is a cross-section elevation of another alternate crown-fluke coupling in accordance with Applicants invention.
  • Applicants anchor 10 is comprised of a crown having a pair of supporting members .12 rigidly attached at their ends to angularly disposed crown plates 14 and 16, a stock 20 disposed through apertures in the crown supporting members 12, a shank 24 pivotably coupled between the crown supporting members 12 on shank pivot shaft 28 (FIG. 2).
  • a pair of flukes 18, each fluke having a T-shaped flange along the edge adjacent the shank 24 is a pair of flukes 18, each fluke having a T-shaped flange along the edge adjacent the shank 24.
  • On the outer side of each crown supporting member 12 is a C-shaped female flange removeably coupled about a portion of the T-shaped flange of each fluke 18.
  • the flukes 18 are connected to the stock by C-clamps bolted through the fluke surfaces.
  • crown supporting members 12 are shown coupled to crown plates 14 and 16.
  • the stock 20 is connected through apertures 38 while the shank pivot pin 28is connected between apertures 36.
  • the entire anchor may be disassembled as shown in FIG. 2.
  • the crown supporting members have an outside facing C-shaped female flange with projecting arms 12A and 128 which are sized to receive the T-shaped flanged edge 18A of each fluke 18.
  • the fluke flange 18A slides down into the crown flange arms 12A and 12B, where it fits snugly.
  • the fluke is secured to the stock 20 by C- clamps 22 (FIG. 1).
  • the shank pivot axis 28 may be separated from the stock and moved forward closer to the front of the crown support 12. This reduces the length of the moment arm whenever the shank is rotated into contact with the front edges of crown plate 14 or 16 which define the limits of angular travel of the shank 24.
  • the shank pivot shaft 28 is positioned in apertures 36 (FIG. 2), the ends of which are adjacent the fluke flange surfaces 18A when the flukes 18 are coupled to the crown support member 12.
  • FIG. 4 shows the male fluke flange 18A snugly coupled within the female crown flange arms 12A and 12B engaged in the working position.
  • the crown wall 42 in FIG. 5 has the T-shaped male flange 44 engaged to the female C-shaped arms 48 protruding from a fluke 46, as an alternate embodiment of the flange coupling of FIG. 4.
  • FIG. 6 shows a fluke flange 18A having a groove 18B disposed along the surface adjacent the crown supporting member surface.
  • the groove 18B allows the shank pivot shaft to extend through and/or be bolted through the crown housing thus permitting the fluke to slide over the ends of the protruding shaft and/or the bolt head or nut attached to shank shaft 28.
  • the anchor may be disassembled for shipping, storage or repair as shown in FIG. 2. Broken flukes may be replaced individually.
  • the shank 24 is attached to the fluke by the pivot shaft 28. Flukes 18 are positioned in and slid within the crown support flange arms 12A and 12B, the fluke ends being stopped adjacent the stock apertures 38. The stock 20 is inserted into the crown housing apertures 38 and bolted to the flukes. The anchor is then ready for use.
  • the crown housing may be welded or riveted together (supporting members 12 to crown plates 14 and 16 in a trapezoidal shape) or may be cast by means of a sand mold, permanent mold or die into one monolithic structure.
  • the top and base of the crown are open to permit flow through.
  • the angular disposition of the crown plates with respect to the fluke plane is selected to aid fluke penetration into the mooring bottom.
  • Applicant's anchor having an improved crownfluke coupling provides a lightweight, dependable anchor that may be disassembled.
  • a twin fluke anchor comprising:
  • a crown having a pair of parallel supporting walls coupled together by a pair of crown plates; receiving means on said crown support walls;
  • flukes coupled to the stock along the rear edges of means being a pair of flanged C-shaped arm members protruding outwardly from the crown supporting walls; and a shank pivotally coupled to said crown.
  • shank pivot shaft coupled to said crown forward of said stock, said shank pivotally coupled to said shank shaft at one end.
  • said shank pivot shaft having a bolt head at one end and a nut receiving threaded portion at the other end;
  • said flukes having grooved portions along said inner crown coupling edges to fit over said nut and bolt head.
  • each fluke removeably coupled to said support wall receiving means along an inside fluke edge portion, said receiving means being on the outside of said crown support walls, said support wall receiving

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Piles And Underground Anchors (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Tents Or Canopies (AREA)
US00178233A 1971-09-07 1971-09-07 Anchor having improved fluke crown coupling Expired - Lifetime US3780688A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17823371A 1971-09-07 1971-09-07

Publications (1)

Publication Number Publication Date
US3780688A true US3780688A (en) 1973-12-25

Family

ID=22651746

Family Applications (1)

Application Number Title Priority Date Filing Date
US00178233A Expired - Lifetime US3780688A (en) 1971-09-07 1971-09-07 Anchor having improved fluke crown coupling

Country Status (8)

Country Link
US (1) US3780688A (enrdf_load_stackoverflow)
JP (1) JPS5513956B2 (enrdf_load_stackoverflow)
AU (1) AU467905B2 (enrdf_load_stackoverflow)
CA (1) CA968229A (enrdf_load_stackoverflow)
DE (1) DE2243512A1 (enrdf_load_stackoverflow)
FR (1) FR2152165A5 (enrdf_load_stackoverflow)
GB (1) GB1393751A (enrdf_load_stackoverflow)
IT (1) IT967220B (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386575A (en) * 1980-12-22 1983-06-07 Brown Robert F Boat anchor
US4700652A (en) * 1986-06-09 1987-10-20 Pekny Robert E Marine anchor
US4892053A (en) * 1988-07-08 1990-01-09 Don Hallerberg Twin-fluke marine anchor having loosely coupled flukes
US5154133A (en) * 1991-03-01 1992-10-13 Hallerberg Don M Twin-fluke marine anchor having an adjustable shank/fluke pivot angle
WO1997034797A1 (en) * 1996-03-19 1997-09-25 Zakariassen Oeyvind Anchor
US6038996A (en) * 1998-11-24 2000-03-21 Giles; Richard Modular boat anchor and kit
US6119618A (en) * 1998-11-24 2000-09-19 Giles; Richard Spring biased modular boat anchor and kit
WO2019122938A1 (en) 2017-12-18 2019-06-27 Ziliaskopoulos Athanasios A marine anchor with self-adjusting shank/flukes angle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2457801A1 (fr) * 1979-05-31 1980-12-26 Royer Guy Perfectionnements aux ancres marines

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641215A (en) * 1949-01-21 1953-06-09 Robert H Eckhoff Anchor
US2722191A (en) * 1952-01-28 1955-11-01 Olaf H Johnson Boat anchor
US2789526A (en) * 1955-07-29 1957-04-23 Andrew M Gollner Snag proof anchor
US2840029A (en) * 1955-06-02 1958-06-24 Danforth Anchors Anchors

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US178233A (en) * 1876-06-06 Improvement in spring air-pistols

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2641215A (en) * 1949-01-21 1953-06-09 Robert H Eckhoff Anchor
US2722191A (en) * 1952-01-28 1955-11-01 Olaf H Johnson Boat anchor
US2840029A (en) * 1955-06-02 1958-06-24 Danforth Anchors Anchors
US2789526A (en) * 1955-07-29 1957-04-23 Andrew M Gollner Snag proof anchor

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386575A (en) * 1980-12-22 1983-06-07 Brown Robert F Boat anchor
US4700652A (en) * 1986-06-09 1987-10-20 Pekny Robert E Marine anchor
US4892053A (en) * 1988-07-08 1990-01-09 Don Hallerberg Twin-fluke marine anchor having loosely coupled flukes
US5154133A (en) * 1991-03-01 1992-10-13 Hallerberg Don M Twin-fluke marine anchor having an adjustable shank/fluke pivot angle
WO1997034797A1 (en) * 1996-03-19 1997-09-25 Zakariassen Oeyvind Anchor
US6038996A (en) * 1998-11-24 2000-03-21 Giles; Richard Modular boat anchor and kit
US6119618A (en) * 1998-11-24 2000-09-19 Giles; Richard Spring biased modular boat anchor and kit
WO2019122938A1 (en) 2017-12-18 2019-06-27 Ziliaskopoulos Athanasios A marine anchor with self-adjusting shank/flukes angle

Also Published As

Publication number Publication date
JPS4862190A (enrdf_load_stackoverflow) 1973-08-30
DE2243512A1 (de) 1973-03-15
GB1393751A (en) 1975-05-14
FR2152165A5 (enrdf_load_stackoverflow) 1973-04-20
IT967220B (it) 1974-02-28
JPS5513956B2 (enrdf_load_stackoverflow) 1980-04-12
AU4638672A (en) 1974-03-14
AU467905B2 (en) 1975-12-18
CA968229A (en) 1975-05-27

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