TW200927592A - Drowning rescue ball pitching device - Google Patents

Drowning rescue ball pitching device Download PDF

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Publication number
TW200927592A
TW200927592A TW96151124A TW96151124A TW200927592A TW 200927592 A TW200927592 A TW 200927592A TW 96151124 A TW96151124 A TW 96151124A TW 96151124 A TW96151124 A TW 96151124A TW 200927592 A TW200927592 A TW 200927592A
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TW
Taiwan
Prior art keywords
ball
float
drive
swing frame
floating
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Application number
TW96151124A
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Chinese (zh)
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TWI332922B (en
Inventor
Han-Tai Fan
Tzung-Li Li
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Nan Kai Inst Technology
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Priority to TW96151124A priority Critical patent/TW200927592A/en
Publication of TW200927592A publication Critical patent/TW200927592A/en
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Publication of TWI332922B publication Critical patent/TWI332922B/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63CLAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C9/00Life-saving in water
    • B63C9/08Life-buoys, e.g. rings; Life-belts, jackets, suits, or the like
    • B63C9/082Annular or U-shaped life-buoys intended to be thrown to persons

Abstract

The present invention relates to a drowning rescue ball pitching device, comprising a float and a float pitching device. The float comprises a float ball and a rope having an end attached to the float ball. The float pitching device comprises a base, a movable chassis, an elevation adjusting device, a ball pitcher, and a ball pusher. The base can be mounted on an automobile or a boat. The movable chassis is rotatably mounted to the base. The elevation adjusting device comprises a swing rack and a driving mechanism that drives the swing rack to rotate by an elevating angle. The ball pitcher comprises two rollers mounted to the swing rack, and the two rollers are spaced by a distance. A ball placed between the two rollers is pitched out by the rotation of the two rollers. The ball pusher is set on the swing rack for pushing a float ball in a ball holding section to the middle of the two rollers. As such, the float can be precisely thrown to a distant person waiting for rescue to allow the person to float on water surface by means of the float so as to facilitate the rescue operation and increase the chance of being rescued.

Description

200927592 - 九、發明說明: •【發明所屬之技術領域】 本創作係有關於一種救生器材方面之技術領域 者’尤指一種可準確的將浮具射予遠處的一受難者, 使該受難者可藉由該浮具浮於水面以方便救援及增加 獲救機會之防溺救生發球器者。 Ο 〇 【先前技術】 目則的防溺救生設備係以拋繩槍為主,拋繩搶主 要係以一小型手持發射裝置將一繩子的一端拋射至受 難者的位置’供受難者綁於身上供救難人員將其拉 I。然而該方式對於不會游泳者或是在水流洲急的環 兄中則又難者仍很容易被水哈到或喝到水而發生危 險。而目前最為妥當的方式,係讓受難者先將該繩子 的-端綁在固定物上’㈣救難人員在將拉著該繩子 將救生㈣給該受難者,並將其帶回。然而該方式使 § 員來回係具有非常大風險,而且該救難 人員拉著該繩子行走時攜帶著救生衣,相對得亦會增 加其風險。再者該抛繩槍所能射出的的 曰 因此救生效果較差,甘i 太短 無幫助。 纟對於較大的湖泊或海上救生較 200927592 【發明内容】 本發明之主要目的係在於提供一種可準確的將浮 具射予遠處的—受難者,使該錄者可藉“浮具浮 於水面以方便救援及增加獲救機會之防溺救生發球器 者。 ° 具體而言’本發明所述之防溺救生發球器,包括 -浮具及-浮具發射機。其中該浮具包括—浮球一端 ©結合於該浮球之一繩子。該浮具發射機包括-基座、 一活動底盤、一俯仰調整裝置、-射球裝置及一推球 裝置。該基座可供固定於車輛或船上。該活動底盤可 轉動地結合於該基座上。該俯仰調整裝置具有一擺動 架及-驅動機構,該擺動架係下侧邊栖設於該活動底 盤上,該驅動機構係可驅動該擺動架於該活動底盤上 俯仰擺動-角度。該射球裝置設於該擺動架的上側 ❹邊包括兩轉輪及兩驅動馬達,該兩驅動馬達可分別 驅動該兩轉輪旋轉,該兩轉輪之間係具有一距離,使 一球在該兩轉輪之間時可因該兩轉輪的旋轉而被射 出。該推球裝置設於該擺動架上可供該置球部的浮球 推至該兩轉輪之間。 如此,藉由調整該活動底盤的轉動、該擺動架的 俯仰角度及該兩轉輪的轉速,即可準確的將浮具射予 遠處的一受難者,使該受難者可藉由該浮具浮於水面 6 200927592 . 以方便救援及增加獲救機會。 【實施方式】 所述之防溺救 2及一遙控器 請參閱第一、二圖所示係指出本發明 生發球器包括一浮具1、一浮具發射機 3。其中: 繩子11及一小浮 該浮具1係包括一浮球1〇200927592 - IX, invention description: • [Technical field to which the invention belongs] This creation is related to a technical field of life-saving equipment, especially a victim who can accurately shoot a floating device to a distant place, so that the victim The rescuer can be rescued by the floater to save the rescue and increase the chance of rescue. Ο 〇 [Prior Art] The anti-mite life-saving equipment of the project is mainly based on a rope-throwing gun. The main part of the rope is a small hand-held launcher that throws one end of a rope to the position of the victim'. The victim is tied to the body. For the rescuers to pull it. However, this method is dangerous for people who are not swimmers or who are in a hurry, but who are still vulnerable to water or drinking water. At present, the most appropriate way is to let the victim first tie the end of the rope to the fixture. (4) The rescuer will pull the rope to give the rescuer (4) to the victim and bring it back. However, this approach poses a very high risk to the stalker, and the rescuer carries the life jacket while walking the rope, which in turn increases the risk. Moreover, the sputum that the throwing rifle can shoot is therefore poor in lifesaving effect, and it is too short to help.纟For larger lakes or marine lifesavings 200927592 [Invention] The main object of the present invention is to provide a victim who can accurately shoot a floating device to a distant place, so that the player can borrow The water surface is convenient for rescue and increase the chance of rescue of the life-saving protector. ° Specifically, the anti-smashing life-saving launcher of the present invention includes a floater and a floater transmitter, wherein the float includes - float One end of the ball is coupled to one of the ropes of the float. The float transmitter includes a base, a movable chassis, a pitch adjustment device, a ball shooting device and a push ball device. The base can be fixed to the vehicle or The movable chassis is rotatably coupled to the base. The pitch adjustment device has a swing frame and a drive mechanism, and the lower side of the swing frame is suspended on the movable chassis, and the drive mechanism can drive the The swinging frame is pitched and tilted on the movable chassis. The ball shooting device is disposed on the upper side of the swinging frame and includes two rotating wheels and two driving motors, and the two driving motors respectively drive the two rotating wheels to rotate. wheel There is a distance between the two rotating wheels, which can be emitted by the rotation of the two rotating wheels. The pushing device is arranged on the swinging frame for the floating ball of the ball placing part Between the two wheels. Thus, by adjusting the rotation of the movable chassis, the pitch angle of the swing frame, and the rotational speed of the two wheels, the floating device can be accurately shot to a victim in the distance. The victim can float on the surface of the water 6 200927592 to facilitate rescue and increase the chance of rescue. [Embodiment] The anti-smashing 2 and a remote control are shown in the first and second figures. The invention relates to a ball feeder comprising a float 1 and a float transmitter 3. wherein: the rope 11 and a small float 1 comprise a float 1

球12。該繩子11的一端結合於該浮球1〇,另一端结 合於該小浮球12’該繩子U可供受難者綁設於身上^ 在另外-個實施例中該繩+ u的另—端係結合一扣 勾(圖中未示),該扣勾可使該繩子u繞設於受難者 身上後再扣設於該繩子11上。 該浮具發射機2包括·· 一基座20,係可供固定於車輛或船上; 一活動底盤30’係可轉動地結合於該基座2〇上, 於該活動底盤30上具有一容置部31可供容納該小浮 球12或該扣勾; 一俯仰調整裝置40,係具有一擺動架41及一驅 動機構42,該擺動_ 41係下側邊㈣於該活動底盤 30上’使其可於該活動底盤3Q上俯仰擺動另於該 擺動架41的上側係又具有一置球部41()可供放置該浮 200927592 球10 ’該驅動機構42係包括一立桿43、一連桿44、 一連動件45、一齒輪46及一驅動馬達47,該立桿43 係上端固定於該擺動架41的上侧邊,該連桿44係一 端樞設於該立桿43下端,且該連桿44的一桿側具有 複數凸齒48,該連動件45係可擺動地樞設於該活動 底盤30上,且並供該連桿44穿設其中,於該連動件 ❹ ❹ 45内部並具有可自由轉動的兩滑輪49,該兩滑輪“ 係頂於該連桿44相反於該凸齒48的一桿側上,該齒 輪46係設於該連動件45中並與該連桿44之凸齒48 嚙合。該驅動馬達47係可供驅動該齒輪46轉動; 一射球裝置50,係設於該擺動架41的上側邊, 包括兩轉輪51及兩驅動馬達52,該兩驅動馬達^可 分別驅動該兩轉輪51旋轉,該兩轉輪51之間 -距離,使該球在該兩轉輪3G《間時可因該兩轉輪 30的旋轉而被射出;及 、一搖柄62、 一推球裝置60,係包括一推桿 一轉盤63及一驅叙民、去n 斗上 以、 驅動馬達64,該推桿61係可軸 地結合於該擺動架41上,且於該推桿61 一端具右一 推塊65 ’該搖柄62 一端係可擺動地結合於該、一 另一端’該轉盤63係可轉動地結合於該擺動架J上61 且該搖柄62的另—端係可轉動地結於於該轉盤63的 8 200927592 ’盤面上’該驅動馬達64係可驅動該轉盤63轉動。 # 該遙控器3係可认、去 動、該擺動架41= 制該活動底盤3〇的轉 在一第一圖中係可看出’該驅動馬達64 (圖中去 =驅動該轉盤63轉動時,該搖㈣會被 未 τ動而連動該推桿6 盤63 球㈣至該兩轉推’使得該推塊65將該浮 ❹ 動將該浮球丨㈣可藉由轉 繩子11將1 , 5亥洋球10被射出時係會藉由該 繩子11將該小浮球12隨之帶走。 請參閱第三〜五圖_ 老圖所不,係指出當該驅動機構42 ㈣動馬達47驅動該齒輪㈣動時,該連桿二 該齒輪46連動於該連動件⑺中移動。如此會破 便會帶動該連動件45擺動及推動該立桿4;:: ❹ :立…動該擺動架41於活動底 = 動=此便可達到調整發球的俯仰角度之目的。 清參閱第六 <〜-〆 八圖所不,係指出該活 於該基座20上轉動,γ i 低盤30可 的。 轉動,以使可達到調整發球方向之目 清t =九圖所示,係指出該射球裝置5〇係藉由 該兩驅動馬達52分別控制該 也斗工絲认r· 的轉速,使可 利用該兩轉輪51的差異轉速產生左旋球、右旋球、快 200927592 速球及慢速球。如此便可造*丨 達至]調整球路及球速之目的。 由於本發明之防溺救4 朽救生發球器係可藉由調整該浮 具發射機之活動底盤的轉動、該擺動架的俯仰角度及 該兩轉輪㈣速,所㈣可準確的料具射予遠處的 一文難者,使該受難者可藉由該浮具的繩子绑於身 上’再抱著該浮球浮於水面,対便救援及增加獲救 ❹Ball 12. One end of the rope 11 is coupled to the floating ball 1〇, and the other end is coupled to the small floating ball 12'. The rope U can be attached to the body by the victim. In another embodiment, the other end of the rope + u The buckle is combined with a buckle (not shown), and the buckle can be wound around the victim and then buckled on the rope 11. The float transmitter 2 includes a base 20 for fixing to a vehicle or a ship; a movable chassis 30' is rotatably coupled to the base 2, and has a capacity on the movable chassis 30. The setting portion 31 is adapted to receive the small floating ball 12 or the buckle; a pitch adjusting device 40 has a swing frame 41 and a driving mechanism 42, and the swinging 41 is a lower side (four) on the movable chassis 30' The driving mechanism 42 includes a vertical rod 43 and a rocking portion 41 () for the upper side of the swinging frame 41. a connecting rod 44, a linking member 45, a gear 46, and a driving motor 47. The upper end of the vertical rod 43 is fixed to the upper side of the swing frame 41. The connecting rod 44 is pivotally disposed at a lower end of the vertical rod 43. And a rod side of the connecting rod 44 has a plurality of protruding teeth 48. The linking member 45 is swingably pivoted on the movable chassis 30, and the connecting rod 44 is disposed therein, and the linking member ❹ 45 Internally and with two freely rotatable pulleys 49, the two pulleys are "topped" by a rod opposite to the protruding teeth 48 The gear 46 is disposed in the linkage 45 and meshes with the protruding teeth 48 of the connecting rod 44. The driving motor 47 is configured to drive the gear 46 to rotate; a ball shooting device 50 is disposed on the swing frame The upper side of the 41 includes a two-rotor 51 and two driving motors 52. The two driving motors can respectively drive the two rotating wheels 51 to rotate. The two rotating wheels 51 are spaced apart from each other to make the ball on the two rotating wheels. 3G "interval can be emitted due to the rotation of the two reels 30; and, a crank 62, a push ball device 60, including a push rod a turntable 63 and a rehearsal, go to n bucket, a driving motor 64, the push rod 61 is axially coupled to the swing frame 41, and has a right push block 65 at one end of the push rod 61. One end of the rocker 62 is swingably coupled to the other end. 'The turntable 63 is rotatably coupled to the oscillating frame J 61 and the other end of the shank 62 is rotatably attached to the turntable 63 of the 200927592 'disc surface'. The drive motor 64 can drive the The turntable 63 rotates. # The remote control 3 is recognizable, de-actuated, and the swing frame 41= the rotation of the movable chassis 3〇 can be seen in the first figure. 'The drive motor 64 (in the figure = when driving the turntable 63 to rotate, the shake (four) will be untwisted and the pusher 6 disk 63 ball (four) to the two pushes' such that the push block 65 will float The floating ball 丨 (4) can be used to take the small ball 12 by the rope 11 when the 1 and 5 hai balls 10 are shot by the rotating rope 11. Please refer to the third to fifth figures _ The old figure indicates that when the driving mechanism 42 (four) the moving motor 47 drives the gear (4), the connecting rod 2 and the gear 46 move in the linking member (7), so that the breaking will drive the linking member 45 to swing. And push the pole 4;:: ❹: stand... move the swing frame 41 to the bottom of the activity = move = this can achieve the purpose of adjusting the pitch angle of the serve. Referring to the sixth <~- 〆 eight figure, it is indicated that the rotation on the base 20 is γ i low disk 30. Rotating so that the direction of the adjustment of the serve direction can be adjusted t = nine figure, indicating that the ball shooting device 5 is controlled by the two drive motors 52, respectively, to control the speed of the drum The difference rotation speed of the two reels 51 is used to generate a left-handed ball, a right-handed ball, a fast 200927592 speed ball, and a slow speed ball. This makes it possible to make the goal of adjusting the ball and the speed of the ball. Since the anti-smashing rescue device of the present invention can adjust the rotation of the movable chassis of the floating device, the pitch angle of the swing frame, and the speed of the two wheels (four), (4) accurate material shooting For those who are far away, the victim can be tied to the body by the rope of the float. Then the float is floated on the surface of the water to help rescue and increase the rescue.

機會之防溺救生發球器者。尤其是該利用兩轉輪將浮 球射出的設計何將該浮具射的㈣,而使其適用於 較大的湖泊或海上救生。 無論如何,任何人都可以從上述例子的說明獲得足 夠教導’並據而了解本發明確實有產業上之利用性。 又未見與本發明相同的技術,所以本發明有新穎性。 又,未見與本發明類似的技術,所以本發明有進步性。 於是,本發明符合發明專利要件,爰依法提出申請。 200927592 【圖式簡單說明】 j 第一圖係本發明之立體外觀圖。 第二圖係本發明之推球動作示意圖。 第三〜五圖係本發明調整俯仰角度的動作示意圖 第六〜八圖係本發明調整射球方向的立 第九圖係本發明發射曲球的動作示“不思圖 ❹ L主要元件符號說 浮具1 繩子11 浮具發射機2 遙控器3 容置_部31 擺動架41 Ο 驅動機構42 連桿44 齒輪46 凸齒48 射球裝置5〇 驅動馬達52 推桿61 浮球10 小浮球12 基座20 活動底盤3Q 俯仰調整裳置4〇 置球部41 〇 立桿43 連動件45 驅動馬達4 7 滑輪49 轉輪51 推球襞置60 搖柄62 11 200927592 .轉盤63 驅動馬達64 , 推塊65The opportunity to prevent defensive life-saving serveers. In particular, the design that uses the two reels to shoot the floats will shoot the buoys (4), making them suitable for larger lakes or marine lifesaving. In any case, anyone can obtain sufficient teaching from the description of the above examples and understand that the present invention does have industrial applicability. The same technique as the present invention has not been seen, so the present invention is novel. Further, the technique similar to the present invention is not seen, so the present invention is progressing. Thus, the present invention complies with the requirements of the invention patent and submits an application according to law. 200927592 [Simple description of the drawing] j The first drawing is a three-dimensional appearance of the present invention. The second figure is a schematic diagram of the pushing action of the present invention. The third to fifth diagrams are diagrams of the operation of adjusting the pitch angle of the present invention. The sixth to eighth diagrams are the ninth diagram of the invention for adjusting the direction of the shot. The action of the present invention is to show the movement of the curved ball. Float 1 rope 11 float transmitter 2 remote control 3 accommodating _ part 31 swing frame 41 Ο drive mechanism 42 connecting rod 44 gear 46 convex tooth 48 ball shooting device 5 〇 drive motor 52 push rod 61 float ball 10 small float 12 Base 20 Active Chassis 3Q Pitch adjustment skirt 4 球 ball 41 〇 upright 43 linkage 45 drive motor 4 7 pulley 49 runner 51 push ball 60 60 crank 62 11 200927592 . turntable 63 drive motor 64 Push block 65

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Claims (1)

200927592 -十、申請專利範圍: 1 種防溺救生發球器,包括一浮具及一浮具 發射機丨中該浮具包括一浮球及一繩子,該繩子的 一端結合於該浮球;該浮具發射機包括: 一基座’係可供固定於車輛或船上; ’舌動底盤,係可轉動地結合於該基座上; =俯仰調整裝置,係具有一擺動架及一驅動機 ❹ U擺動架係下侧邊樞設於該活動底盤,且於該擺 動架上具有—置球部供該浮球置放,該驅動機構可驅 動該擺動架於該活動底盤上俯仰擺動一角度; 射球裝置,係設於該擺動架的上侧邊,包括兩 :及兩驅動馬達’該兩驅動馬達可分別驅動該兩轉 輪旋轉,該兩轉輪之間係具有一距離,使該浮球在該 兩轉輪之間時可因該兩轉輪的旋轉而被射出;及 0 <推球裝置,係⑤於該擺動架上可供該置球部的 浮球推至該兩轉輪之間。 σ 如申明專利範圍第1項所述之防溺救生發球 器,其中該洋具之繩子的另一端係具有一小浮球該 活動底盤上具有一容置部供容納該小浮球。 。 如申明專利範圍第1項所述之防溺救生發球 ,八中該/予具之繩子的另一端係具有—扣勾,該活 動底盤上具有一容置部供容納該扣自。 13 200927592 — 4、如申请專利範圍第1項所述之防溺救生發球 ·'器,更包括一遙控器可於遠端控制該活動底盤的轉 動、該擺動架的俯仰角度及該兩轉輪的轉速。 5、如申請專利範圍第丄項所述之防溺救生發球 器,其中該驅動機構包括一立桿、一連桿、一連動件、 -齒輪及-驅動馬達’該立桿係上端固定於該擺動 架,該連桿係一端樞設於該立桿下端,且該連桿之一 〇桿側具有複數凸齒,該連動件係可擺動地棍設於該活 動底盤,且並供該連桿穿設其中,該齒輪係設於該連 動件中並與該連桿之凸齒嗔合,該驅動馬達係供驅動 該齒輪轉動。 —叫布j哨听返之防溺救生發玉 €> 器,其中該連動件内部具有可自由轉動的兩滑輪,言 兩滑輪係頂於該連桿相反於該凸齒的-桿側上。 7如申5月專利範圍第1項所述之防溺救生發与 器,其中該推球裝置包括—推桿、—搖柄一轉^ 駆推該推桿係可轴向移動地結合於該_ 動地=::T推塊,柄,可揭 該擺動架上,二:另該::係可轉動地結合於 轉的盤面上’該驅動馬達係可驅動該轉盤轉動。200927592 -10. Patent application scope: 1 anti-smashing life-saving ball-sending device, comprising a floating device and a floating device transmitter, wherein the floating device comprises a floating ball and a rope, and one end of the rope is coupled to the floating ball; The float transmitter includes: a base 'sendable for attachment to a vehicle or a ship; 'a tongue-and-drive chassis rotatably coupled to the base; a pitch adjustment device having a swing frame and a drive ❹ The lower side of the U-swing frame is pivotally disposed on the movable chassis, and has a ball-shaped portion for the floating ball to be placed on the swing frame, and the driving mechanism can drive the swing frame to pitch and swing on the movable chassis; The ball shooting device is disposed on the upper side of the swing frame, and includes two: and two driving motors. The two driving motors respectively drive the two rotating wheels to rotate, and the two rotating wheels have a distance between the two rotating wheels to make the floating The ball is ejected between the two reels by the rotation of the two reels; and 0 < push ball device, on the oscillating frame, the floating ball of the ball-receiving portion can be pushed to the two revolving Between the rounds.溺 溺 溺 之 之 之 , , , , , , , , , , , , , , , , 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺 溺. For example, the anti-smashing life-saving tee described in claim 1 of the patent scope, the other end of the rope of the eight-in-the-counter has a buckle, and the movable chassis has a receiving portion for accommodating the buckle. 13 200927592 — 4. The anti-smashing life-saving tee device of claim 1, further comprising a remote controller for controlling the rotation of the movable chassis, the pitch angle of the swing frame, and the two reels at a remote end Speed. 5. The anti-smashing life-saving service device according to the above-mentioned claim, wherein the driving mechanism comprises a pole, a connecting rod, a linking member, a gear and a driving motor, wherein the upper end of the pole is fixed to the pole a swinging frame, one end of the connecting rod is pivotally disposed at a lower end of the vertical rod, and one of the connecting rods has a plurality of convex teeth on the side of the mast, the linking member is swingably attached to the movable chassis, and the connecting rod is provided The gear is disposed in the linkage and is coupled to the protruding teeth of the connecting rod, and the driving motor is configured to drive the gear to rotate. - a cloth whistle that listens to the smash-proof life-saving jade, wherein the linkage has two pulleys that are freely rotatable, and the two pulleys are attached to the rod-side of the rod opposite to the rod-side . 7. The anti-smashing life-saving device according to the first aspect of the invention, wherein the push-pushing device comprises: a push rod, a rocker, a turn, a pusher, and the pusher is axially movably coupled to the pusher _ moving ground =:: T push block, handle, can be uncovered on the swing frame, two: another:: rotatably coupled to the rotating disk surface 'the drive motor can drive the turntable to rotate.
TW96151124A 2007-12-31 2007-12-31 Drowning rescue ball pitching device TW200927592A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3088294A1 (en) * 2015-04-30 2016-11-02 Corrado Sella Sea rescue machine
CN110356534A (en) * 2019-08-09 2019-10-22 杭州优想玩具有限公司 A kind of lifesaving appliance that can quickly recycle lifebuoy
CN115230913A (en) * 2022-09-20 2022-10-25 南昌云守护科技有限公司 Drowning prevention system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3088294A1 (en) * 2015-04-30 2016-11-02 Corrado Sella Sea rescue machine
CN110356534A (en) * 2019-08-09 2019-10-22 杭州优想玩具有限公司 A kind of lifesaving appliance that can quickly recycle lifebuoy
CN115230913A (en) * 2022-09-20 2022-10-25 南昌云守护科技有限公司 Drowning prevention system

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