WO1991014480A1 - Procede de fabrication d'un manche de canne de golf en fibre et manche de canne de golf en fibre - Google Patents

Procede de fabrication d'un manche de canne de golf en fibre et manche de canne de golf en fibre Download PDF

Info

Publication number
WO1991014480A1
WO1991014480A1 PCT/FI1991/000087 FI9100087W WO9114480A1 WO 1991014480 A1 WO1991014480 A1 WO 1991014480A1 FI 9100087 W FI9100087 W FI 9100087W WO 9114480 A1 WO9114480 A1 WO 9114480A1
Authority
WO
WIPO (PCT)
Prior art keywords
shaft
angle
layers
circa
crosswise
Prior art date
Application number
PCT/FI1991/000087
Other languages
English (en)
Inventor
Heikki Ratia
Matti Suominen
Original Assignee
Exel Oy
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 Exel Oy filed Critical Exel Oy
Publication of WO1991014480A1 publication Critical patent/WO1991014480A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B53/00—Golf clubs
    • A63B53/10—Non-metallic shafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
    • B29C53/62—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels rotatable about the winding axis
    • B29C53/66—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels rotatable about the winding axis with axially movable winding feed member, e.g. lathe type winding
    • B29C53/665—Coordinating the movements of the winding feed member and the mandrel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
    • B29C70/205—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres the structure being shaped to form a three-dimensional configuration
    • B29C70/207—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres the structure being shaped to form a three-dimensional configuration arranged in parallel planes of fibres crossing at substantial angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/52—Sports equipment ; Games; Articles for amusement; Toys
    • B29L2031/5227—Clubs

Definitions

  • the present invention relates to a method as set forth in the preamble of claim 1 for manufacturing a golf- club shaft of a fibre material as well as to a golf- club shaft made of a fibre material, as set forth in the preamble of claim 6.
  • the golf-club shafts made of a fibre mate ⁇ rial are usually manufactured by manual lamination from a pre-preg material, i.e. resin-moistened fibre mats.
  • a problem with these is to achieve a desired adjustment of the properties repeatedly required of a club, in ⁇ cluding e.g. the twist, torsion, vibration and ri ⁇ gidity and especially the position of the centre of gravity of a club shaft.
  • the position of the centre of gravity will be indefinite and, thus, the ultimate centre of gravity must be lo ⁇ cated by changing the weight of a head portion attach ⁇ ed to the shaft of a club. Such a procedure is rela ⁇ tively slow.
  • An object of the present invention is to provide a method for manufacturing a golf-club shaft formed of continuous fibres, said method facilitating the adjustment of shaft properties and the determina ⁇ tion of the centre of gravity of a shaft for any given club head portion whereby, after finishing a shaft, said head portion can be attached as such to the shaft portion.
  • a method of the invention is characterized by what is set forth in the character ⁇ izing clause of claim 1.
  • a golf- club shaft of the invention is characterized by what is set forth in the characterizing clause of claim 7.
  • the most important advantage gained by a method of the invention is that the shaft properties can be adjusted simply by varying the angle of winding the fibres at various locations of a shaft.
  • This angle of fibres is varied or changed in a manner that the winding angle of a pair formed by any given two superimposed trans ⁇ verse fibre layers is mutually equal but reversed at each lengthwise location of a shaft.
  • the shaft may consist of a plurality of such pairs formed by two transverse layers, whereby the winding angle of one pair at least over a portion of the shaft length can be different from that of the other pair at the cor ⁇ responding location of the shaft for adjusting the desired properties of a shaft.
  • the ad ⁇ justment of the centre of gravity is preferably effect ⁇ ed by means of inner pairs of transverse fibre layers and the adjustment of torsional rigidity, in turn, by means of fibre layers located close to the surface.
  • the inner and outer layers preferably comprise longitudinal fibre layers whose fibres are substantially parallel to the longitudinal shaft axis, i.e. the winding angle is appr. 0°.
  • the longitudinal rigidity and pro ⁇ duct strength can be increased with a minimum amount of fibre.
  • the shaft properties can also be affected by the selection of fibres used for each fibre layer, said fibres being continuous.
  • the fibre material may com ⁇ prise various types of carbon fibres (HS, IM, HM) , glass fibres, polyester, polyethylene, aramide, nylon and the like fibres suitable for reinforcement, e.g. metal-based fibres.
  • the fibres have a filament thick ⁇ ness typically within the range of 5-30 um and the fibre weight is usually 0,1-2,4 g/m.
  • a useful bind ⁇ er it is possible to employ e.g. heat-setting resins, epoxies, vinyl esters, methacrylates, polyesters, phenols, polyides etc.
  • the shaft fibre layers can be built e.g. in a manner that appr. 40 % of the total amount of fibres in a shaft include substantially straightforward fibres extending longitudinally of the shaft and the rest, appr. 60 %, include fibres wound transversely at varying angles. As for these longitudinal fibres, for instance 1/3 can be laid in ⁇ side the shaft and appr. 2/3 on top of the shaft, the transverse fibre layers being laid between said longi ⁇ tudinal fibre layers.
  • said innermost layer of longitudinal fibres may comprise carbon fibres having a modulus of 230 GPa and an elongation at rup ⁇ ture of 1,6 % and the outer layer of longitudinal fibres may accordingly comprise a composite including 10 % of carbon fibres having a modulus of 380 GPa and an elongation at rupture of 1,3 % and 90 % of carbon fibres having a modulus of 230 GPa and an elongation at rupture of 1,6 %.
  • a pair formed e.g. by the two innermost layers may com ⁇ prise e.g.
  • carbon fibres having a modulus of 230 GPa and an elongation at rupture of 1,6 % and the outer pair may accordingly comprise a- composite having 40 % of carbon fibres with a modulus of 295 GPa and an elongation at rupture of 1,4 % and 60 % of carbon fibres with a modulus of 380 GPa and an elongation at rupture of 1,3 %.
  • the mutual relationship of these pairs can be varied e.g. in a manner that the two innermost layers have a share of 10 % while the pair consisting of the top two layers has a share of 90 % or, for example, in a manner that these propor ⁇ tions are reversed, i.e. 90 %/10 %.
  • Such use of vari ⁇ ous fibres and fibre compositions in various layers facilitates an almost limitless adjustment of various properties.
  • fig. 1 shows schematically the various operations in ⁇ cluded in a method of the invention
  • fig. 2 shows the principle of one transverse or cross- winding unit applicable in a method of the in ⁇ vention
  • fig. 3 illustrates a shaft element manufactured by means of a method of the invention
  • fig. 4 shows a cross-section of the shaft element of fig. 3 in a larger scale
  • fig. 5 shows a definition for the direction of a wind ⁇ ing angle.
  • I supplying successive, joint cores 1 to a production line and supplying longitudinal fibres from a reel 5 through a resin vessel 6 into a longitudinal-fibre feeding unit 2 for feeding the longitudinal fibres on top of core 1.
  • fig. 1 discloses two longitudinal- fibre feeding units 2 and four cross-winding units 3 , but of course the number thereof can be varied as de ⁇ sired.
  • the number of cross-winding units 3 can suitably be four to eight, but preferably al ⁇ ways an even number.
  • Fig. 2 illustrates an exam ⁇ ple of one embodiment of cross-winding unit 3.
  • the cross-winding unit comprises a circular disc 7 which is provided with eight fibre rollers 9 for feed ⁇ ing bundles of fibres 10 on top of core 1.
  • any other desired number of rollers e.g. 4-16 rollers.
  • said bundles of fi ⁇ bres 10 can be simultaneously supplied out of a desired number of rollers, e.g. 4-16 rollers.
  • Each bundle of fibres 10 includes a large number of filamants, even tens of thousands of filaments.
  • Fig. 3 illustrates a shaft element 11 manufactured by the application of a method of the invention, wherein the top lengthwise fibre layer is not shown for the sake of clarity.
  • the individual bundles of fibres are shown at an exaggerated distance from each other, as in practice it is nevertheless possible to form a substantially continuous fibre layer thereof.
  • Fig. 4 illustrates a cross-section of shaft 11 of fig. 3, whereby a top lengthwise fibre layer 12 is added thereto.
  • the club shaft is designed to be hollow.
  • the crosswise fibres have a winding angle , prefer ⁇ ably within the range of circa (+)30 - circa (+)60 or within the range of circa (-)30 - circa (-) 60 .
  • the (+)-angle refers to an angle which opens anticlockwise relative to a shaft element longitudinal axis 18 and the (-)-angle accordingly re ⁇ fers to an angle which opens clockwise relative to said shaft element longitudinal axis (18).
  • the top shaft end is provided with crosswise fibres having a winding angle of circa 30
  • the bottom shaft end (thinner end) being provided with crosswise fibres having a winding angle of circa 45 .
  • This variation of winding angleC - at a desired location of each cross ⁇ wise layer is effected for example in a manner that the advancing speed of cores 1 is maintained constant but the rotating speed of disc 7 of winding unit 3 is changed in order to obtain a desired angular position.
  • the variation of angle proceeds in a stepless fashion. For example, reversal of the direction of a winding angle is effected in a manner that, in sequen ⁇ tially mounted winding units 3, the rotating direction of a downstream unit is reversed relative to that of the preceding winding unit while still maintaining the same rotating speed at the corresponding locations of a shaft, whereby said winding angle - ⁇ . will be equal at each location of a shaft.
  • winding angle is important to maintain an equal but oppositely directed winding angle in a pair formed by two superimposed crosswise layers so as to eliminate the stresses possibly generated in a shaft by fibres wound at an angular position.
  • the winding angle can naturally be varied between various pairs of crosswise layers 12, 13; 14, 15 in shaft 11, as required by desired properties.
  • the centre of gravity can be adjusted quite accurately at a desired loca ⁇ tion which lies e.g. between appr. 40-60 % of the shaft length as measured from the bottom end of a shaft, preferably appr. 51 % of the shaft length.
  • a desired loca ⁇ tion which lies e.g. between appr. 40-60 % of the shaft length as measured from the bottom end of a shaft, preferably appr. 51 % of the shaft length.
  • lengthwise layers can also be laid between crosswise layers instead of only in the inner and outer surface layer.

Abstract

L'invention concerne un procédé de fabrication de manche de canne de golf en fibre. Le procédé comporte des opérations consistant à appliquer longitudinalement (I, VI) et transversalement (II-V) des couches de fibres sur une tige centrale, ces couches étant constituées de fibres continues; les couches de fibres sont ensuite imbibées de résine ou d'un liant du même type puis le manche est vulcanisé à chaud ou par rayonnement. D'après le procédé, deux couches transversales superposées au moins sont enroulées en formant un angle par rapport à l'axe longitudinal du manche, cet angle étant situé environ entre (+)30° et (+)60° ou entre (-)30° et (-)60°, le signe (+) indiquant un angle s'ouvrant dans le sens inverse des aiguilles d'une montre par rapport à l'axe longitudinal et le signe (-) indiquant un angle s'ouvrant dans le sens des aiguilles d'une montre par rapport à cet axe. L'invention concerne également un manche de canne de golf en fibre qui comprend plusieurs couches de différentes fibres constituées de fibres continues. Le manche comporte au moins deux couches de fibres transversales superposées enroulées de façon à former un angle par rapport à l'axe longitudinal du manche, l'ouverture de cet angle d'enroulement se situant environ entre (+)30° et (+)60° ou entre (-)30° et (-)60°.
PCT/FI1991/000087 1990-03-28 1991-03-28 Procede de fabrication d'un manche de canne de golf en fibre et manche de canne de golf en fibre WO1991014480A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI901538A FI901538A (fi) 1990-03-28 1990-03-28 Foerfarande foer framstaellning av ett skaft av fibermaterial till en golfklubba och ett skaft av fibermaterial till en golfklubba.
FI901538 1990-03-28

Publications (1)

Publication Number Publication Date
WO1991014480A1 true WO1991014480A1 (fr) 1991-10-03

Family

ID=8530142

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1991/000087 WO1991014480A1 (fr) 1990-03-28 1991-03-28 Procede de fabrication d'un manche de canne de golf en fibre et manche de canne de golf en fibre

Country Status (2)

Country Link
FI (1) FI901538A (fr)
WO (1) WO1991014480A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0891791A1 (fr) * 1997-07-16 1999-01-20 Mizuno Corporation Club de golf et manche de club de golf
WO1999007446A1 (fr) * 1997-08-05 1999-02-18 Silvano Zorzi Tube ainsi que club de golf a manche constitue de ce tube
WO2000035540A1 (fr) * 1998-12-14 2000-06-22 Reichhold, Inc. Batte de base-ball
US6776735B1 (en) 1998-12-14 2004-08-17 Reichhold, Inc. Baseball bat
WO2012098122A1 (fr) * 2011-01-18 2012-07-26 Sgl Carbon Se Procédé de fabrication d'un dispositif à fibres en forme de flexible d'un élément composite renforcé par fibres et dispositif à fibres en forme de flexible
CN103429417A (zh) * 2011-05-19 2013-12-04 综研化学株式会社 纳米压印用模具及曲面体
WO2020259951A1 (fr) * 2019-06-25 2020-12-30 North Thin Ply Technology Sarl Arbres tubulaires composites renforcés par des fibres et leur fabrication

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3457962A (en) * 1965-11-16 1969-07-29 Samuel M Shobert Golf club shaft and method of forming the same
US3646610A (en) * 1969-03-10 1972-02-29 True Temper Corp Fiber glass reinforced golf shaft
US3998458A (en) * 1974-07-12 1976-12-21 Hitachi Chemical Company, Ltd. Golf club shaft
US4000896A (en) * 1973-07-16 1977-01-04 The Babcock & Wilcox Company Composite golf club shaft
US4023801A (en) * 1974-09-24 1977-05-17 Exxon Research And Engineering Company Golf shaft and method of making same
US4135035A (en) * 1976-05-20 1979-01-16 Avco Corporation Laminated composite golf club shaft
US4157181A (en) * 1976-05-07 1979-06-05 Fansteel Inc. Graphite fiber tapered shafts
US4757997A (en) * 1986-06-06 1988-07-19 Fiber-Speed International, Inc. Golf club shaft and method of manufacture
FR2628643A1 (fr) * 1988-02-04 1989-09-22 Impact 18 Procede pour la fabrication du manche d'un club de golf, et club de golf ainsi fabrique
US4889575A (en) * 1986-06-06 1989-12-26 Fiber-Speed International, Inc. Method of manufacturing golf club shafts

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3457962A (en) * 1965-11-16 1969-07-29 Samuel M Shobert Golf club shaft and method of forming the same
US3646610A (en) * 1969-03-10 1972-02-29 True Temper Corp Fiber glass reinforced golf shaft
US4000896A (en) * 1973-07-16 1977-01-04 The Babcock & Wilcox Company Composite golf club shaft
US3998458A (en) * 1974-07-12 1976-12-21 Hitachi Chemical Company, Ltd. Golf club shaft
US4023801A (en) * 1974-09-24 1977-05-17 Exxon Research And Engineering Company Golf shaft and method of making same
US4132579A (en) * 1974-09-24 1979-01-02 Exxon Research & Engineering Co. Golf shaft and method of making same
US4157181A (en) * 1976-05-07 1979-06-05 Fansteel Inc. Graphite fiber tapered shafts
US4135035A (en) * 1976-05-20 1979-01-16 Avco Corporation Laminated composite golf club shaft
US4757997A (en) * 1986-06-06 1988-07-19 Fiber-Speed International, Inc. Golf club shaft and method of manufacture
US4889575A (en) * 1986-06-06 1989-12-26 Fiber-Speed International, Inc. Method of manufacturing golf club shafts
FR2628643A1 (fr) * 1988-02-04 1989-09-22 Impact 18 Procede pour la fabrication du manche d'un club de golf, et club de golf ainsi fabrique

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0891791A1 (fr) * 1997-07-16 1999-01-20 Mizuno Corporation Club de golf et manche de club de golf
WO1999007446A1 (fr) * 1997-08-05 1999-02-18 Silvano Zorzi Tube ainsi que club de golf a manche constitue de ce tube
US6514156B1 (en) 1997-08-05 2003-02-04 Silvano Zorzi Tube and golf club with handle made of said tube
WO2000035540A1 (fr) * 1998-12-14 2000-06-22 Reichhold, Inc. Batte de base-ball
US6776735B1 (en) 1998-12-14 2004-08-17 Reichhold, Inc. Baseball bat
WO2012098122A1 (fr) * 2011-01-18 2012-07-26 Sgl Carbon Se Procédé de fabrication d'un dispositif à fibres en forme de flexible d'un élément composite renforcé par fibres et dispositif à fibres en forme de flexible
CN103402740A (zh) * 2011-01-18 2013-11-20 西格里金佩尔斯有限及两合公司 制造纤维增强复合部件的管状纤维装置的方法及管状纤维装置
RU2553902C2 (ru) * 2011-01-18 2015-06-20 Сгл Кюмперс Гмбх Унд Ко. Кг Способ изготовления рукавообразной волоконной системы армированного волокном композиционного конструктивного элемента и рукавообразная волоконная система
US9518342B2 (en) 2011-01-18 2016-12-13 Sgl Kuempers Gmbh & Co. Kg Method of producing a tubular fiber arrangement of a fiber-reinforced composite part, and tubular fiber arrangement
US9822469B2 (en) 2011-01-18 2017-11-21 Sgl Kuempers Gmbh & Co. Kg Tubular fiber arrangement of a fiber-reinforced composite part
CN103429417A (zh) * 2011-05-19 2013-12-04 综研化学株式会社 纳米压印用模具及曲面体
WO2020259951A1 (fr) * 2019-06-25 2020-12-30 North Thin Ply Technology Sarl Arbres tubulaires composites renforcés par des fibres et leur fabrication

Also Published As

Publication number Publication date
FI901538A (fi) 1991-09-29
FI901538A0 (fi) 1990-03-28

Similar Documents

Publication Publication Date Title
US5071687A (en) Laminated tubes and method of manufacturing the same
US4381960A (en) Method of manufacturing a filament wound article
US5419231A (en) Asymmetric braiding of improved fiber reinforced products
US2749643A (en) Hollow shaft for fishing rods
US4529139A (en) Method of manufacturing a filament wound article
US5512119A (en) Method of making a hybrid prepreg
US4857124A (en) Fiber-reinforced plastic strut connecting link
DE69812405T2 (de) Zuführsteuerungssystem für faserauflegevorrichtungen
US3107698A (en) Pipes
US4133708A (en) Method for producing a fishing-rod
AT502377B1 (de) Grundkörper für ein rotierendes schleif- bzw. schneidwerkzeug sowie daraus hergestelltes schleif- bzw. schneidwerkzeug
JPH0271771A (ja) ゴルフシャフト及びその製造方法
US4401495A (en) Method of winding composite panels
US4885865A (en) Graphite fiber reinforced rod construction
WO1991014480A1 (fr) Procede de fabrication d'un manche de canne de golf en fibre et manche de canne de golf en fibre
JPS5818220B2 (ja) 樹脂、らせん状に巻いた繊維及び渦巻き状連続繊維の高強度複合体及びその製法
EP0058783A1 (fr) Tuyau composé d'une résine hybride, renforcée par des fibres en matière synthétique
DE102014223127A1 (de) Druckbehälter, Verfahren zur Herstellung eines Druckbehälters sowie Flechtmaschine
US3700527A (en) Transverse filament reinforcing tape and methods and apparatus for the production thereof
JPS58114919A (ja) フイラメントワインデイングによる物品の製造方法
JPH01207454A (ja) 組み合わせたストランドの三次元構造物
JPH11342233A (ja) 炭素繊維強化プラスチックス製ゴルフシャフト
US3676246A (en) Method for longitudinal reinforcing plastic pipes
US3711350A (en) Process for the fabrication of complex contoured bodies
AU627688B2 (en) Method and apparatus for making a compression molding charge

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA JP KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: CA