US3425706A - Ski pole wheel - Google Patents

Ski pole wheel Download PDF

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Publication number
US3425706A
US3425706A US577460A US3425706DA US3425706A US 3425706 A US3425706 A US 3425706A US 577460 A US577460 A US 577460A US 3425706D A US3425706D A US 3425706DA US 3425706 A US3425706 A US 3425706A
Authority
US
United States
Prior art keywords
holder
ring
ski pole
wheel
sections
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
US577460A
Other languages
English (en)
Inventor
Torsten Erland Folke Lindberg
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.)
Santrade Ltd
Original Assignee
Sandvik AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sandvik AB filed Critical Sandvik AB
Application granted granted Critical
Publication of US3425706A publication Critical patent/US3425706A/en
Assigned to SANTRADE LTD., A CORP. OF SWITZERLAND reassignment SANTRADE LTD., A CORP. OF SWITZERLAND ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SANDVIK AKTIEBOLAG, A CORP. OF SWEDEN
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C11/00—Accessories for skiing or snowboarding
    • A63C11/22—Ski-sticks
    • A63C11/24—Rings for ski-sticks

Definitions

  • a ski pole wheel consists essentially of a ring and a holder, within the ring, by which the ring is flexibly secured to a ski pole.
  • the holder in turn, comprises a central holder portion (comprising a hub, which accommodates a ski pole in an axial opening therein, and inner holder sections contiguous with the hub), outer holder sections adjacent to the ring of the ski pole ring and having outwardly directed holder arms, and portions interconnecting said inner and outer holder sections, said holder arms terminating in sleeves or fastening portions embracing the ring of the ski pole ring.
  • the ring is formed, in one piece, of plastic material having relatively restricted flexibility while the holder is formed, in one piece, of a relatively soft and yielding plastic material.
  • the ring By situating the connections between the wheel and the ring and the outer holding sections in diflerent radial directions than the connections between the outer holding sections and the inner holding sections the ring is easily inclined (under influence of a load) from the normal position perpendicular to the axis of the hub whilst rapidly returning to normal position upon removal of the load.
  • the present invention relates to a ski pole wheel comprising a ring which is attached to a ski pole by means of a holder.
  • the ring has often been made of metal which has the defect that it is relatively heavy and susceptible to permanent deformation.
  • the holder has been made of leather, rubber or similar material in order to give sufficient freedom of movement of the wheel relative to the pole, the ring being attached to the holder by rivets or the like.
  • the present invention provides an improvement of ski pole wheels consisting in that not only the ring but also the holder are made of plastic, the ring being made of a harder and less flexible plastic and the holder of a softer and more flexible plastic. This gives a substantially simplified construction of the wheel.
  • the invention is described in the following specification and illustrated in the appended drawings in which:
  • FIG. 1 is a top elevational view of a ski pole wheel according to the invention.
  • FIG. 2 is a section on line 22 of FIG. 1.
  • the ski pole wheel shown in FIGS. 1 and 2 comprises a ring and a holder 11 with a hub 12.
  • the ring illustrated has a hexagonal cross section but may have some other section, for instance circular.
  • the holder consists of inner holder sections 13 adjacent to the hub 12, outer holder sections 14 adjacent to the ring 10 and interconnecting portions 15.
  • the outer holder sections 14 are in the form of radially directed arms which at their outer ends have fastening portions 16 embracing the ring 10. These fastening portions 16 are situated radially between the connecting portions 15, an arrangement which permits the ring to be easily inclined from its normal position in a plane perpendicular to the axis of the hub 12 under influence of a load and to rapidly return to said plane when the load is removed.
  • the wheel has a high resilience and the deformations normally encountered are not permanent.
  • the invention is useful also for other types of holders than the one described.
  • the arms of the outer holder sections may be flat as shown in full lines for the arms 14 or corrugated as shown with dashed lines for the arms 14a in FIG. 2.
  • the fastening portions 16 are formed as sleeves which embrace the ring 10 and the ring is thus secured without use of rivets as has been usual in earlier constructions. It has unexpectedly been found possible to join a ring 10 of hard plastic and a holder 11 of softer plastic in this way in spite of the fact that the melting points of the plastics are rather close to each other.
  • the invention provides thereby a substantial simplification of previous wheel constructions, as it is possible to make the wheel in two parts of different materials without riveted or similar joints. At the same time the wheel has a substantially smaller weight than previous wheels.
  • a substantial advantage of the present wheel is that all parts of it are resilient, at the same time as the materials in the ring and in the holder are adapted to suit the different requirements for said parts.
  • metal is susceptible to permanent deformation by mechanical impacts.
  • the hard plastic on the other hand is not sufficiently yieldable for the holder to permit the repeated angular displacement of the wheel on the pole during skiing. Therefore the hard plastic wheel has to be provided with a flexible joint between the wheel and the pole.
  • the invention solves these problems by providing a ski pole wheel which is flexible in both the ring and the holder between the ring and the pole and therefore not susceptible t0 shocks and which has a harder flexible ring providing the desired rigidity and a softer flexible holder providing the desired yieldability.
  • This result is obtained as stated above by making the ring of a hard plastic and the holder of a soft plastic.
  • the hardness of the ring is suitably 60-80 Shore, D-scale, usually about 70 Shore,
  • Both the ring and the holder may be made of polyethylene, the ring being of HD-ethylene and the holder of LD-ethylene.
  • a convenient material for the holder is ethylene-vinylplastic.
  • the plastic in the holder can be somewhat harder than if the arms are flat as illustrated at 14.
  • the radially directed arms of the outer holder sections 14 are provided with openings 17 to lessen their weight and also to increase their flexibility.
  • the hub 12 is integral with the rest of the holder, comprising the parts 13, 14, 15 and 16. In some cases the hub may be omitted, the central part of the holder only having a hole for the ski pole.
  • the ring When manufacturing the wheel the ring is cast in a first mold.
  • a second mold for casting the holder is adapted in such a way that the ring can be mounted in the second mold before casting the holder.
  • the sleeves are cast around the ring each forming a unitary sleeve around the ring.
  • the wheel may be attached to the red by means of any suitable device as flanges on the rod on both sides of the holder centre.
  • Another suitable fastening means is a separate rubber sleeve on the rod within the hub 12.
  • Ski pole wheel comprising a ring and a holder, situated within the ring, by which the ring may be flexibly secured to a ski pole, said ring being formed in one piece of relatively hard plastic material and said holder being formed in one piece of relatively soft plastic material; said holder consisting essentially in (1) a central holder portion comprising a hub and inner holder sections connected thereto, (2) outer holder sections adjacent to said ring, and (3) portions connecting said inner holder sections with said outer holder sections; said outer holder sections including outwardly directed arms, the ends of said holder arms forming sleeves each of which embraces the ring, each sleeve forming a unitary annular section around the ring; the connections between the inner holder sections and the outer holder sections being situated in different radial directions than the connections between the outer holder sections and the ring. 2. Ski pole wheel according to claim 1 in which said outer holder sections are in the form of pairs of radially directed arm portions which generally lie in the same plane as the ring and converge from the inner
  • Ski pole wheel according to claim 2 in which said arm portions are corrugated in the radial direction.

Landscapes

  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US577460A 1965-09-06 1966-09-06 Ski pole wheel Expired - Lifetime US3425706A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1155265 1965-09-06

Publications (1)

Publication Number Publication Date
US3425706A true US3425706A (en) 1969-02-04

Family

ID=20294171

Family Applications (1)

Application Number Title Priority Date Filing Date
US577460A Expired - Lifetime US3425706A (en) 1965-09-06 1966-09-06 Ski pole wheel

Country Status (4)

Country Link
US (1) US3425706A (de)
AT (1) AT275378B (de)
CH (1) CH455603A (de)
DE (1) DE1578907A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743311A (en) * 1971-01-11 1973-07-03 J Giambazi Ski pole basket
USD1000563S1 (en) * 2022-10-28 2023-10-03 Zhouyang Zheng Ski pole tip

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721084A (en) * 1951-02-28 1955-10-18 Alexander C H Weiss Ski pole rings
US3193300A (en) * 1961-01-25 1965-07-06 Robert J Mcdonald Ski pole rings
US3202436A (en) * 1963-11-04 1965-08-24 Henry J Barreea Ski poles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2721084A (en) * 1951-02-28 1955-10-18 Alexander C H Weiss Ski pole rings
US3193300A (en) * 1961-01-25 1965-07-06 Robert J Mcdonald Ski pole rings
US3202436A (en) * 1963-11-04 1965-08-24 Henry J Barreea Ski poles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743311A (en) * 1971-01-11 1973-07-03 J Giambazi Ski pole basket
USD1000563S1 (en) * 2022-10-28 2023-10-03 Zhouyang Zheng Ski pole tip

Also Published As

Publication number Publication date
CH455603A (de) 1968-07-15
DE1578907A1 (de) 1970-11-05
AT275378B (de) 1969-10-27

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SANTRADE LTD., ALPENQUAI 12, CH-6002, LUCERNE, SWI

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SANDVIK AKTIEBOLAG, A CORP. OF SWEDEN;REEL/FRAME:004085/0132

Effective date: 19820908