CA1315816C - Stick - Google Patents

Stick

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Publication number
CA1315816C
CA1315816C CA000585467A CA585467A CA1315816C CA 1315816 C CA1315816 C CA 1315816C CA 000585467 A CA000585467 A CA 000585467A CA 585467 A CA585467 A CA 585467A CA 1315816 C CA1315816 C CA 1315816C
Authority
CA
Canada
Prior art keywords
blade
fiber reinforced
puck
plastic plate
reinforced plastic
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 - Fee Related
Application number
CA000585467A
Other languages
French (fr)
Inventor
Shigeji Hasegawa
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.)
Hasegawa Chemical Industry Co Ltd
Original Assignee
Hasegawa Chemical Industry Co Ltd
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 Hasegawa Chemical Industry Co Ltd filed Critical Hasegawa Chemical Industry Co Ltd
Application granted granted Critical
Publication of CA1315816C publication Critical patent/CA1315816C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Laminated Bodies (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

ABSTRACT OF THE DISCLOSURE
A stick has a shaft and a blade integral with the shaft.
The blade is attached at each of both surfaces of a wooden core material thereof with at least a fiber reinforced plas-tic plate, respectively, so as to form a pair of puck-striking surfaces. The stick is characterized in that at least one of the plurality of fiber reinforced plastic plates has fibers paralleled in one direction and that the blade is provided at an area thereof equivalent to at least a half of the entire length thereof from the tip of a toe thereof with the wooden core material having grains oriented in the direc-tion intersecting with the direction of fibers of the fiber reinforced plastic plate.

Description

This invention relates to a sticklike playing instrument (hereinafter simply referred to as "stick") for use in the games of ice hockey, cricket and the like, and more par~
ticularly to a stick having puck- or ball-striking surfaces reinforced with a fiber reinforced plastic plate. There will be describad hereunder a representative stick which is used in a game of ice hocXey.

Heretofore, a stick of this type has been used, for example, in the game of ice hockey. ~he ice hockey stick is an instrument for striking a disk-shaped puck hard with a radical powerful swing and striking back a puck coming at a high speed. Therefore, the ice hockey stick is easily broken. As a result of our study about the consumption of sticks in Japan, it was found that a university student con-sumed 30 sticks on average in one season and a player who belongs to a company consumed about 100^- 150 pcs.

Because of the reasons mentioned above, many attempts have been made to improve a stick which was onc~ simply made of wood. As a result, there appeared a stick reinforced with fiber reinforced plastic (FRP), a stick made of aluminum alloy, a stick made of glass E;ber, etc. However, a strong stick often became too heavy for ordinary players, whereas a li~ht-weight stick was often insufficient in durabilitY.
Furthermore, since a stick made of metal sllch as aluminum alloy i5 susceptible to plastic deformation, there are used many sticks which are formed bY attachin~ glass fiber reinforced plastic IGFRP) plate, carbon fiber rein-forced plastic (CRFP) plate, or the like obtained by impre~-nating a thermosettin~ resin such as epoxy, Polyester, or the like to a cloth fiber such as glass fiber, carbon fiber, or the like and then hardened to both surfaces of a wooden core material. A typical examPIe of this type is disclosed in USP4,537,398.
The wooden core material has ~rains oriented in the lon-gitudinal direction of a blade. Such wonden core material is covered with a fiber reinforced plastic plate as a rein-forcement plate. The fiber reinforced plastic plate isformed of a plurality of vertical and horizontal fibers which are woven together in such a way as that the vertical and horizontal fibers are intersected with each other and which are then impregnated with resin such as epo~y or the like. However, when a stick with such reinforcement is ac-tually used, it becomes clear that such reinforcement as mentioned alone is not sufficient Yet~ Since grains are oriented in the longitudinal direction of the blade and the thickness of the stick is rather thin considering its length, it hardly bears a puck impact and is easily broken in the direction of its width. Since it has such characteristic as easily broken in the grain direction it is often split finely or torn.
The cloth type fiber reinforced plastic plate has such an advantage as to reinforce both the vertical and horizontal directions simultaneollsly because the fibers are intersected with each other in the vertical and horizontal directions.
On the other hand, it has such a disadvantage as that the tensile force of the fibers are insufficient because the ver-tical and horizontal fibers are intersected overlapping with each other and undulated in a waveform. Therefore, it has insufficient tensile strength and insufficient elastic modulus in both vertical and horizontal directions and a physical strength thereof is not lar~e enough. In addition, it has such shortcomings as that a repulsive force against fle~ibility is small and a responding speed. for striking back a PUck and a puck speed are slow. Moreover, since fihers are intersected overlaPPing with each other, it is obl.iged to have an excessive thickness to that extent. Therefore, the quantity of resin required for impregnation becomes larger to that extent`and thus becomes heavier, which naturally spoils an easy handling of such stick. In addition, since a stress concentrates on a point where the fibers are intersected with each other, that portion becomes easy to breaX.

As a prior art for solving the above shortcomings, there is Japanese patent application No. Sho 61-59149 filed by the applicant of the present application. The feature of this prior art is that fibers are arranged in parallel relation and extended copying along the configuration of a stick at the puck striking side from a puck striking portion to a handle portion.

However, since the front end portion of a stick, i.e., the area in the vicinity of the toe portion of a blade, is away from a grip portion, the bending amount is large at the time when the blade strikes a puck and delay of response is significant. Moreover, it does not offer a satisfactory solution to such kind of a problem as a difficulty in increasing the puck speed.

The present invention provides a stick which is light in its front end portion and easy to play with, and is durable.

According to an aspect of the invention there is provided a puck-striking stick comprising: a shaft, and a blade; said blade comprising a wooden core integral with one end of said shaft and a pair of puck-striking surfaces formad by attaching at least one unidirectional fiber reinforced cured plastic plate to both sides of said wooden core;
wherein grains of said wooden core are oriented in a width direction of said blade; wherein fibers of said unidirectional fiber reinforced cured plastic plate are oriented in a longitudinal direction of said blade; and wherein a soft thin film is interposed between said wooden core and said unidirectional fiber reinforced plastic plate.

B

13l58l6 Preferably the puck-striking surfaces of said blade are covered with thermo-plastics having a scatter prevention member. Suitably a protecting member for protecting an upper surface or a lower surface of the blade covered with thermo-plastics is attached to an outer edge surface of said blade.

Features and advantages of the present invention will b~come apparent to those skilled in the art from the following detailed description of a preferred embodiment of the invention with reference to the accompanying drawings, in which:

Fig. 1 is an exploded perspective view of one embodiment of a stick of the presènt invention;

. ~

1315~

Fig. 2 is a front view of a ~ick o the present invention;
Figs. 3 through ~ are schematic views showing examples of a wooden core material attached with a fiber reinforced plastic plate:
Figs. 6 and 7 are schematic views showing examples of a plurality of fiber reinforced plastic plates attached with each other;
Figs. 8 through ll are schematic views showing examples of a wooden core material attached with a plurality of fiber reinforced plastic plates;
Figs. 12 and 1'3 are front views showing an important portion of a stick showing that a part of a shaft member forms a part of a core material of a blade;
Figs. 14 through 17 are front views showing an important portion of a stick which is partly reinforced with a fiber reinforced plastic plate;
F;g. l8 is a sectional view of a stick with its blade edge covered with a protection material;
Fig. 19 is a sectional view in the width direction of a blade member, the entirety of which is covered with a protec-tion material;
Figfi. 20 and 21 are sectional views similar to Figs. 2() and 21 but the blade member is partly covered with a protec-tion material Fig. 22 is a fr~nt view of an important portion of a stick having n strike reinft)rcemcnt member in which grains and/or fibers are oriented in the direction vertical to a puck-striking surface;
Fig. 23 is a sectional view taken on line XXIII-XXIII of Fig. 22;
Fig. 24 is a sectlonal view showing another example at the same position of Fig. 23;
Fig. 2~ is an exploded perspective view of a stick with A soft thin film interposed;
Fig. 26 is a sectional view of a blade including a scat-ter preventin~ member;
Fig. 27 is a schematic view showing a core material of ABS resin which is bein~ attached with a cloth type carbonic wnven cloth fiber reinforced pla~tic plate;
Fig. 28 is a schematic view showing a core material of ABS resin which is being attached with a fiber reinforced plastic plate in which fibers are arranged in one direction;
Fig. 29 is a schematic view æhowing a wooden core material which is being attached with a cloth type carbonic woven cloth fiber reinforced Plastic plate;
Fig. 30 is a schematic view showing a wooden core material which is being attached with a fiber reinforced plastic plate in which fibers are arranged in one direction;
and Fig. 31 is a schematic view showing the test conditions.

Figs. 1 through 24 show one embodiment of the present invention.

Fig. 2 shows a stick for use in an ice hockey. The stick comprises a shaft 1 which is grasped by hand and a blade 3 integral with the shaft 1 and adapted to strike a puck. The joint portion between the blade 3 and the shaft 1 is called a "heal" which is denoted by 3a. The opposite side of the heal 3a on the blade 3 is called a "toe" which is denoted by 3b. The blade 3, as shown in Fig. 1, comprises a wooden core material C and at least one fiber rein~orced plastic plate A attached to each surface of the material C.
The surfaces attached with the fiber reinforced plastic plates serve as puck-striking surfaces. Of the ~iber reinforced plastic plates A, at least one is a thin plate which is formed of fibers such as carbon fibers, glass fibers, etc. arranged in parallel relation as such that a tensile force is given in one direction and impregnated with resin of epoxy or esther and hardened. Therefore, it has an excellent resilient property. The amount o~ a tensile force given depends on the kinds and diameters of the fibers. In case, for example, glass fibers of 2400g/km are used, the tensile ..~..

.~ ~ ,~, 1315~16 force given i5 about 0.1~ 1.51~g per each fiber.
A wooden core material C partly comprises a part oE the shAt 1 extending into the heal 3a o the blade 3 as shown in Fig~. 12 and ]3. In the remainder of the wooden core material C, wood grains are oriented in the width direction (short direction), In this way, the wooden core matexial C has an area nr portion equivalent to at least a half length of the blade from the tip of the toe 3b (equivalent to the entire length of the blade 3 in this embodiment) where grains are oriented in the direction intersectin~ with the fiber direction o the iber reinforced plastic plate A.
In Fig. 3, the wooden core material C has a Portion where grains are ariented over the entire leneth in the lon-gitudinal direction of the blade 3 and where grains are oriented generally over a half of the entire length of the blade 3 in the direction vertical to the lon~itudinal direc-tion of the blade 3, This wooden core material C is at-tached at each side thereof with a reinforced Plate compris-ing a fiber reinforced Plastic plate A in which fibers are arranged in parallel relation in the longitudinal direction.
In the area equivalent to a half length of the blade 3 from the tip of the toe 3b, the grains of the wooden core material C and the fiber direction of the fiber reinforced plastic plate A are inter~ected with each other~

In the example of Fi~. 4, an area equivalent to a half of the wooden core material C at the s;de of the toe ~b of the blade 3 is provided with ~rains oriented at angles with respect to the width direction (short direc-tion) of the blade 3, and the fiber reinforced Plastic plate A is provided with fibers arran~ed ;n parallel relation in the longitudinal direction of the blade ~ so that the grains and the fiber direction are inter~ected with each other.
In the example of Fig. ~, the wooden core material C is provided with grains oriented in the longitudinal direction of the blade 3, and the fiher reinforced plastic plate A with the fiber direction arranged in the width direction of the blade 3 is attached to the wooden core material C.
In the examples of Figs. 6 throu~h 9, the wooden core material C is attached at least at one surface thereaf with a plurality of flber reinorced plastic plates each having fibers arranged in parallel relation in one direction as such that the fiber directions of the plurality of fiber rein-forced plastic plates are intersected with each other. Fig.
6 shows a fiber reinforced plastic plate Al comprising a fiber reinforced plastic plate A1 with fibers arranged in parallel relation in the longitudinal direction of the blade 3 and a fiber reinforced plastic plate A2 with fibers ar-ranged in parallel relation in the width direction of the blade 3 and attached with each other. Similarly, Fi~. 7 11) shows a fiber reinforced plastic plate All comprising three Eiber reinforced pla~tic plates Al, A3 and A~ attached together. In this example, the plate A1 has fibers arranged in parallel relation in the longitudinal direction of the blade 3, the plate A~ has fibers arranged in parallel rela-tion and at angles with respect ~o the width direction of the blade 3, and the plate A~ has the fibers arranged in parallel relation and at nngles with respect to the width direction of the blade 3 but to the other way of the inclining direction of the fibers nf the plate A3.
Fig~ 8 shows an example in which the fiber reinforced plastic plate Al of Fig. 6 is attached to the wooden core material C having a grain orientation as shown in Fig. 4.
Fig. 9 shows still annther example in which the fiber rein-forced plastic plate AII of Fig. 7 is attached to the wooden core material C having a grain orientation resembling to that of Fig. 3. ln this examPle, only one surface of the wooden core material C is shown. The other surface of the wooden core material C may be attached with the same fiber rein-forced plastic plates Al and All or with the reinforced plas-tic plate A comprising one reinforced plastic plate. By at-taching a plurality of reinforced plastic plates having dif-ferent fiber directions together, the surfaces of the blade 3 becomes strong and the directionality of the blade 3 against repulsion is lessened. Thus, a player with this type of stick can easily pass a puck in the direction as he wants.
In the example shown in Fig. IO, the wooden core material C having grains oriented in the longitudinal direc tion of the blade 3 is attached with the fiber reinforced plastic plate All of Fig. 9. In the example of Fig. I1, the wooden core material C having grains oriented in the width direction of the blade 3 in the area equivalent to a half of the blade 3 at the side of the toe 3b is attached with the fiher reinforced plastic sheet AI of Fig. 6. As appreciated frnm these examples, the core material C has an area equiv-alent to at least a half length of the blade 3 from the tip nf the toe 3b where the grains of the wooden core C are oriented in the direction parallel ta the fiber direction of any one of the pluralitY of fiber reinforced plastic plates AI and AII. In this way, since the fiber reinforced plastic plates AI and AII have the fiber direction parallel to the grain direction of the wooden core material C, the shortage of strength of the ~rains can be offset. In the examples of Figs. 10 and 11 where fibers are arranged in the longitudinal direction of the blade 3, t}le repulsive force against flexibility becomes much better when compared with a case solely depended on the wood grains.
Figs. 14 through 18 show examples in which the fiber reinforced plastic plate is partially attached to anY area of the stick which requires a more strength, i.e., the area not limited to the puck-strikin~ surface. In Figs. 14 and 15, the fiber re;nforced plastic plate is dispos~d to the area extending from the heal 3a to the lower portion of the shaft 1 as such that f;bers are oriented p~rallel with the lon-gitudinal direction of the shaft 1. Fig. 16 shows still another example in which a iber reinforce plastic plate com-prising a plurality of fiber reinforced plastic plates having fibers arranged in parallel relation in one directinn and overlapped with each other as such that the fiber directions are intersected wit~ each other is disposed to the heal 3a portion for a partial reinforcement. In the examPle of Fig.
17, the toe ~b portion is provided for the purpose of a par-tial reinforcement with the fiber reinforced plastic plate A
having fibers arranged in parallel relation in the width direction of the blade 3. In the example of Fi~. 18, the blade 3 is provided at an upper surface 3c, a lower surface and a ront end face 3e of the toe 3b with the fiber rein-forced plastic plate in order to reinforce the peripheral portion of the blade 3. This fiber reinforced plate may be comprised of a sin~le p]ate or a plurality of plates. The fiber reinforced plate may be provided at least to the lower surface 3d of the blade 3.
Fig. 19 is a cross sectional view of the blade 3 which is covered at the puck-striking surfaces and peripheral por-tinn thereof with a fiber reinfnrced plastic plate h and then t3 covered thereon with a laye~ of a Protecting material B such as, for example, a resin. This example is adap-ted to im-prove the hardness of the surface of the fiher reinforced plastic plate A and the weakness against a shock. With the projecting material B coverin~ the entire periphery o the blade 3, there can be prevented the invasion of moisture into the core wood, thereby to improve the durabil~ty. The protecting material B attached to the puck-striXing sur~aces is adapted to protect the fiber reinforced plastic having fibers oriented in one direction and thus readily cracked by shocX of a puck, etc. The protecting material B applied to the bottom side of the blade 3 is adapted to prnt~ct the fiber reinforced plastic which is otherwise readily broken because the bottom side of the stick hits the ice surface very hard when striking the puck. The application of the layer of the protecting material B is not limited to the en-tire peripheral portion, but it may be applied only to the lower surface 3d or only the upper and lower surfaces 3c and 3d. In this way, in case the protecting material B is provided to the lower surface 3d instead of the puck-~triXin~
surface, it should be of a special structure such as, for ex-ample, those shown in Figs. 20 and 21 so that the fiber rein-forced plastic plate is not pealed off which is caused by in-terference of the fiber reinorced plastic plate as a rein-forcement material due to deformation b~ socX of the protect-ing material B or the like. Furthermore, the protectingmaterial B may be provided on a surface in the puck-striking direction with an irregularity such as a proiection, a lineàr prnjection, an ap~rture, etc., so as to improve the ~ripping of the puck.
Furthermore, Figs. 22 through 24 show other exnmples in which at least a part of the puck-striking surface of the blade 3 is provided with a strike reinforcement member hnving wood grains and or fibers oriented in the direction vertical to the puck-striking surface. The strike rein-farcement member D may be comprised of the wooden core material C having grains oriented in the direction vertical to the puck-striking surace as shown in Fig. 23, or of the fiber reinorced plastic plate A provided at a part thereof with fibers oriented in the direction vertical to the puck-striking surface as shown in F'ig. 24, or of the both members.
By virtue of the foregoin~ arran~ement, the striking strength per unit area becomes comparatively large and the repulsive force against a puck also hecomes comparatively large, and the puck speed becomes fast, too.
Fig. 25 shows an example of a ~lade in which a fiber reinforced plastic plate A is attached to each surface of the wooden core material G throu~h a soft thin film G. The soft thin film G is formed of a flexihle material such as, for ex-ample, rubber, soft plastic, etc. The soft thin film is in-1~

1 31 5~1 6 terposed between the attachin~ surfaces of the wooden corematerial C and the fiber reinforced plastic plate A in order to effectively Prevent the peeling~off of the attaching sur-nces. Also, the soft thin film interposed has such a func-tion as to absorb shocks acted on the blade 3. Moreover, it effectively prevents the breakage of the fiber reinforced plastic plate A.
In the example of ~ig. 26, the blade 3 i~ provided with a scatter prevention member. In the figure, C denotes a core material made of wood. The wooden core material C is prnvided at its outer side and puck-striking surface with a fiber reinforced plastic plate A reinforced by an ;norganic fiber such as carbon fiber, ~lass fiber or the like which are attached together with a soft thin film G interposed there-between, respectively. ~urthermore, the both outer sides of the wooden core material C is attached with an organic fiber such as nylon, polyester, tetron, aramid or the like adapted tn protect the hard and fragile fiber reinforced Plastic plate A, or with a soft plastic sheet 5 formed of a scatter prevention member 4 for preventing the scatterin~ of fiber-shaped substance such as rubber, metal or the like, both sur-faces or one surface (both surfaces in the illustrated example) being attached with a thermoplastic. Reference numerals 6 and T denote protecting materials for protecting the upper surface or the lower surface of the blade 3 and lG

1315~1~

made of thermoplastic or the like.
In the fiber reinforced plastic plate A of thi~ ~mbodi-ment, the fibers are not In the ~orm of cloth comprising woven ibers but paralleled by being given a tensile force in one direction. Within a same paralleled plane, fibers are arranged in line at an equal thickness to the size of a fiber and then, for example, a fiber reinforced plastic plate A
having a thicknes~ equal to the size of fibers paralleled in a different direction is attached overlapping thereon. The fiber reinforced plastic plate A having fibers paralleled in one direction exhibits a higher resiliency and a higher strength compared wi-th the fiber reinforced plastic plate A
having fiber~ woven in the form of cloth.
This can be proved from the following test data.

1 3 1 5~ 1 6 STRENGrH TES1 OF COMBINA1IONS OF RElNFORCEMENr MATERIAL
AND CORE MATERIAl OF A BlADE
CORE KIND ABS RESIN (THIC~NESS: 3mm) MAPLE WOOD (THICKNESS: 3mm) MATERIAL GRAIN DIRECTION HORIZONTAI. VERTICAL
(LONG. DIRECTION) (WIDIH DIRECTION) REINFORCED KIND CARBON CARBON CARBON CARBON
MATERIAL ClOTH PARALLEl CLOTH PARALLEl THICKNESS (mm) 0.23x8-1.84 0.23x8=1.84 0.23x8 1.84 0.23x8 1.8 CONSTITUTION ABS ABS WOOD WOOD
TEST OF ONE SURFACE CLOTH VERTICAL CLOTH HORIZONTAL
PIECE CLOTH HORIZONTAL CLOTH HORIZONTAL
CLOTH VERTICAL CLOTH VERTICAL
CLOTH HORIZONTAL CLOTH HORIZONTAL
DIMENSION Imm) 5.9x15x100 5.9x15x100 5.9x15x100 5.9x15x100 WEIGHT (gr) 9.8 9.8 8.7 8.7 BENDING RESILIENCE BENT BROKEN BENT BROKEN BENT BROKEN BENT BROKEN
BENDING Ikg/mm) 38.0 38.5 46.6 41.3 46.9 37.0 48.6 36.1 TEST ---------------------------------- ---RESULT BENDING STRENGTH
(kg) 120.8120.3 177.0172.6 129.3111.5 150.2138.2 SPECIFIC STRENGTH
(kg/sr) 12.3 12.3 18.117.6 14.912.8 17.3 15.9 SPECIFIC RESlllENCE 3.9 3.9 4.8 4.2 5.4 4.3 5.6 4.2 (kg/mmxsr ) BENT: Breakage in the ~idth direction BROKEN: Breakage in the lDngitudinal direction 1 31 5~ 1 6 The content of such test will now be described.
(~) Re: Test Piece 0 As shown in Fig. 27, a fiber reinforced plastic plate F comprising four cloth type carbonie woven fiber was at-tached to each of the both sllrfaees (one surface is nmitted in the illustrated example~ of a core material E of an ABS
resin (Test piece I).
The vertical and horizontal fiber ratio: the same (l:l) ~ As shown in Fig. 28, a fiber reinforced plastic plate A eomprising fnur carbon fibers paralleled was attaehed to eaeh of the both surfaees (one surfaee is omitted in the illustrated example) nf a core material E of an ABS resin (Test piece Il).
It is noted that in each test piece 1, Il, the quantity of the fibers of the fiber reinforced plastic plate F was the same to that of the fiber reinforced plastic plate A.
~ As shown in Fig. 29, n maple (Aeer pietum) was used as the wooden eore material C, and wood grains of the material C were oriented in the longitudinal direction of a blade. A fiber reinforced plastic plate F comprising four eloth type earbonie woven fiber was attaehed to each of the both surfaees (one surface is omitted in the illustrated example) of such prepared eore material C (Test piece Ill).
~ As shown in Fig. 30, a maple (Acer Pictum) was used as the wooden eore material C, and wood grains of the 13158~

material C were oriented in the width direction of the blade.
A fiber reinforced plas~ic plate A comprising four fibers paralleled was attached to each of the both surfaces (one surface is omitted in the illustrated example) of such prepared core material C as such that the number of the horizontal fibers intersecting with the grains is larger than that of the vertical fibers, i.e., horizontal, horizontal, vertical and horizontal (Test piece IV). In case the core material had a directionality as in wood, the reinforcement was performed taking into consideration the directionality of the fiber reinorced plastic plate A.
It is noted that in the test pieces III and l~t the quantity of the fiber reinforced plastic plate F was the same to that of the fiber reinforced plastic plate A.
(2) The test was carried out under the conditions as shown in Fig. 31.
l. The configuration of the test pieces 1, II, 111 and 1 Thickness(5.9) x Width(15.0mm) x Length (lOOmm) 2. L,oad status Testin~ machine : autograph (Shimazu Seisakusho) Bending chord : three-point bending Span Q : 80mm Radius Rl of pressure element : 5mm Radius R2 of supporting jig : 2mm Test speed : 5mm/min 1315~16 The thickness of the test pieces 1 through IV i5 3.0mm for -the core materials E and ~, and 0.2~mmx8 plates, thus -to-tal 3.0~0.23x8=4.8~mm but actu~lly 5.9 since the thickness of the adhesive agent is added thereto, for the fiber reinforced plastic plates A and F.
When the test pieces III and IV are compared with each other, it is known that the quantities of the flber rein-forced plastic plates F and A used are the same, but in the test piece IV, the fiber directions of the fiber reinforced plastic plate A ha~ing fibers paralleled in one direction are intersected as horizontal, horizontal, vertical and hori~on-tal also taking into consideration the grain direction of the core material and therefore, the test piece IV is larger in resilience and in strength.
On the contrary, if the strength of both the test pieces Ill and IV is made the same, the weight of the test piece can be reduced.
In the above table, the specific strength and specific resilience are obtained by dividin~ the various values with the weights of the test pieces I through IV. In other words, the specific strength and the specific resilience show the strength per weight. Therefore, it becomes lighter and stronger as this value becomes larger.
Such cnmparison is also apPlicable to the comparison be-tween the test pieces I and Il.

As described in the foregoing, according to th~ present invention, a half of the entire length of the blade at the toe tip side is reinforced with at least a fiber reinfoxced plastic plate having fibers parallel in one direction.
Accordingly, there can be obtained a stick which is light in its front end and thus easy to play with. Moreover, the repulsive force becomes comparatively large even at the toe tip side of the blade and thus, the striking responsibility is excellent. In addition, thP puck speed of the stick can be increased.

Claims (3)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A puck-striking stick comprising:

a shaft, and a blade; said blade comprising a wooden core integral with one end of said shaft and a pair of puck-striking surfaces formed by attaching at least one unidirectional fiber reinforced cured plastic plate to both sides of said wooden core;

wherein grains of said wooden core are oriented in a width direction of said blade;

wherein fibers of said unidirectional fiber reinforced cured plastic plate are oriented in a longitudinal direction of said blade; and wherein a soft thin film is interposed between said wooden core and said unidirectional fiber reinforced plastic plate.
2. A puck-striking stick according to claim 1, wherein the puck-striking surfaces of said blade are covered with thermo-plastics having a scatter prevention member.
3. A puck-striking stick according to claim 2, wherein a protecting member for protecting an upper surface or a lower surface of the blade covered with thermo-plastics is attached to an outer edge surface of said blade.
CA000585467A 1987-12-11 1988-12-09 Stick Expired - Fee Related CA1315816C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62313856A JP2685192B2 (en) 1987-12-11 1987-12-11 stick
JP62-313856 1987-12-11

Publications (1)

Publication Number Publication Date
CA1315816C true CA1315816C (en) 1993-04-06

Family

ID=18046329

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000585467A Expired - Fee Related CA1315816C (en) 1987-12-11 1988-12-09 Stick

Country Status (2)

Country Link
JP (1) JP2685192B2 (en)
CA (1) CA1315816C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10864419B2 (en) 2012-11-28 2020-12-15 Bauer Hockey, Llc Hockey-stick blade with tailored performance regions

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4537398A (en) * 1979-07-10 1985-08-27 Salminen Reijo K Hockey stick having laminated blade structure
JPS6159149A (en) * 1984-08-29 1986-03-26 Bunichi Kizaki Energy saving drainboard

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10864419B2 (en) 2012-11-28 2020-12-15 Bauer Hockey, Llc Hockey-stick blade with tailored performance regions
US11679316B2 (en) 2012-11-28 2023-06-20 Bauer Hockey, Llc Hockey-stick blade with tailored performance regions

Also Published As

Publication number Publication date
JPH01153171A (en) 1989-06-15
JP2685192B2 (en) 1997-12-03

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