[go: up one dir, main page]

TWI334375B - - Google Patents

Download PDF

Info

Publication number
TWI334375B
TWI334375B TW97116580A TW97116580A TWI334375B TW I334375 B TWI334375 B TW I334375B TW 97116580 A TW97116580 A TW 97116580A TW 97116580 A TW97116580 A TW 97116580A TW I334375 B TWI334375 B TW I334375B
Authority
TW
Taiwan
Prior art keywords
tooth
block
hole
groove
tooth block
Prior art date
Application number
TW97116580A
Other languages
Chinese (zh)
Other versions
TW200946290A (en
Original Assignee
Proxene Tools 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 Proxene Tools Co Ltd filed Critical Proxene Tools Co Ltd
Priority to TW97116580A priority Critical patent/TW200946290A/en
Publication of TW200946290A publication Critical patent/TW200946290A/en
Application granted granted Critical
Publication of TWI334375B publication Critical patent/TWI334375B/zh

Links

Landscapes

  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Description

1334375 九、發明說明: 【發明所屬之技術領域】 本發明係涉及於手工具領域,尤指一種活動扳手。 【先前技術】 工業上常用於轉動螺帽之手工具中,尤以可任意調整失口尺 寸之活動扳手為首選,該傳統型活動扳手侧㈣動娜來調整 •活動顎之夾口尺寸,因為蜗桿的齒腹與活動顎之齒腹間皆有間 隙,當調整活動顎使其夾緊螺帽,並驅動第一循環後取出,此時 間隙會使夾口尺寸變小,而無法迅速的再:欠套入、驅動第二循環, 不但造成不便’且目獅轉,細整活觸位置又非常費時, 在使用效率上明顯不佳。 為此問題,有如美國專利案第脱523093號所示,該案例中 係將板手頭部崎—容置孔,可供兩魏置人,㈣塊之齒面係 #為-交錯狀,並且可使其中一齒塊來唾合活動_條,而另一齒 塊則呈脫離狀態,賴動操作部時,可使兩齒塊與祕分離,即 可調整活動顎與固定顎之尺寸。 惟該案只在於活動顆的圓桿之底緣,設單一齒條,因此僅能 使用於單-尺寸之齒距調整,此在公、英制之緊固件加她⑹ 並存的國家(例如美國),將造成使用者須同時購買公、英制單位 (Metric、SAE)各一支,無形中令使用者付出額外花費,且在使 用上須尋找、分辨,皆非常不方便;為此,本人特別依此需求, 5 1334375 而設計出一款能同時使用在公制單位及英制單位之緊固件 '(Fasteners)的活動扳手,如申請案號第96142656號,另為求 此設計更為祕鮮確,讓使用者在m動扳手上,可依緊 固件(Fasteners)的不同單位需求,自由選擇公制單錢英制單 位;因此’本發明提供如下文詳細說明情述具創新性的活動板 手。 • 【發明内容】 本發明之目的,係提供-種具兩不同齒距⑽⑻的排齒部 及齒塊’齒距-為公制單位,另—為英鮮位,即可使該活動板 手’能同時應用於公制及英制單位之緊固件(Faste_)者,並 且於齒塊鮮置關财-賴部,奴位柯分·立控繼 公制或英繼塊定位於可隨時齡,絲遠脫離軸部者,以讓 使用者能依緊m件的不同單位,達_單、容易操作。 • 為達到上述之目的’本發明係採用一種活動扳手,其主要包 括-握柄及-活動顎,其中於握柄之頭部内設有供兩齒塊置入之 容置孔,使該兩齒塊可於容置孔内以朝向接近或遠離活動顆之方 向移動’而該活_導引部之底緣兩側則設有兩排齒部,令兩齒 塊於容置孔時’可兩錢所設之齒面與相對應配合之齒部相 ^合、分離’並且齒塊與容置孔之間設有一定位部,該定位部 =由撥動件可獨立控制各齒塊,使齒塊可隨時喃合或永遠脫離齒 〇 1334375 n述,本發糊她部,條㈣各不同單位的 齒塊=實可讓使財驗砰單位·_,制省時、 又能簡單、容易操作之功效。 【實施方式】 本發明係有關一種活動板手,為達上述目的、特徵所採用技 術手段及其功效,請先參照第一圖所示: 本發明主要包括-握柄!及-活觸2,該握柄卜端設 -頭部3 ’該頭部3-端延伸—固錢4,頭部3縱向設有—严 槽5 ’頭部3沿厚度之橫向方向設有與滑槽5相連通且為^ 狀之容置孔1〇; 牙 該活細2具有-夾部2〇,於爽部2Q下方形成一導引部 21,該導引部21可活動設置於滑槽5内,令活動顎2可透過 導引部2 1沿著滑槽5移動,使夾部2 〇與固㈣㈣形成— #供夾持物體之夾部空間7 (請參照第二圖);該導引部2 i之底緣 兩絲面各具有—排齒部2 1 1 ’該兩排齒部2 ! i可為齒距長 度早位不相同之結構(如—排齒部為英制、另—排齒部為公⑷, 亦可為齒距長度#相同且呈間隔交錯設置之結構; 容置孔1Q之開π兩側’可各別將—齒塊3〇置人裝設,該 容置孔1 _可供齒塊3 QJl、下活動,而可接近或遠離^ 部2 1之料2 1 1,肖贱3⑽輸卩2 ! !之表面形成— 齒面31’該齒面31與齒部211之形狀呈相對應者且可相互 1334375 嗜合,齒塊3 Q底面設有—容孔3 2 ’該容孔3 2可供一彈性件 3 3裝設’該彈性件3 3用於使齒面31與齒部211自動互相 嗜合;其中’於齒塊3 〇與容置W 〇<相對應側面設有一定位 部’該定位部包括有一彈性件3 5及一鋼珠3 6,該定位部係設 於齒塊3 0之侧孔3 4内’且鋼珠3 6係受彈性件3 5推抵而略 露出於側孔3 4 ’面對於鋼珠3 6之容置w 〇側壁,則設有一 第-定位溝1 1及-第二定位溝! 2,該第—粒溝i i較接近 活動顎2之導引部21 ’而第二定位溝12則遠離活動韻2之導 引部21,利用定位部之鋼珠3 6活動定位於第一定位溝丄工或 第二定位溝12内,使齒塊3 0可靠近齒部211或遠離齒部2 1 1者。 此外’設於容置孔1〇之齒塊3◦’朝外凸設有一框部3 7, 該框部3 7兩侧形成有一結合孔3 71,且於框部3 7外設有一 撥動件4 0 ’該撥動件4 0對應齒塊3 〇之表面設有一插接體4 1,於插接體41之兩側設有一扣部411,當插接體41插入 框部3 7時,該結合孔3 71可供扣部41 1扣合固定,使撥動 件4 0可固設於齒塊3 0上,將撥動件4 0上、下撥動時,可同 步帶動齒塊3◦上、下位移,而可令鋼珠3 6滑入第一定位溝1 1或第二定位溝12 ’決定該齒面31與齒部211為隨時可嚙 合或永遠分離狀態;再者,該齒塊3 0與撥動件4 0之間設有— 蓋體5 0,該蓋體可固設於頭部3容ί孔1〇周緣之淺槽13, 1334375 且該蓋體5 0具有一供 1,該導孔51之範圍 ’精由上述之結構,可 如此可蓋合遮掩容置孔10及齒塊3 〇, 框部3 7與插接體41穿設結合之導孔5 大小可供框部3 7與插接體41上下移動 構成如第二圖所示之活動扳手。 請參照第三圖及第四圖所示,該撥動件4 〇未撥動之一般情 =下時’紗容孔3 2 (請參照第—圖)之雜件3 3係會將齒 φ ^◦向上推抵’使齒面31與齒部211呈—唾合狀態,令鋼 珠36定位第-定位溝!!内,而該第—定位溝i i縱向形成一 可滑移之溝距,當使用者推動調整夾部2 ◦與_顎4之間的夹 部空間7時,該齒面3工與齒部2工工係會產生連續分離、唾合 的動作,造成齒塊3 0產生連續跳動,間接使鋼珠3 6於第一定 也溝11内上下來回滑移,此時撥動件4〇之箭頭係指向位於蓋 體5 0之L (Locking)處,如第二圖所示。 4參照第五圖及第六圖所示,當使用者欲調整夾輕間7為 公制或英辦辦,則可雛*需使狀鑛件4 Q,使齒塊^ 2齒面31遠離導引部2工之齒部2工工,並使鋼珠3 6由第 —定位溝11移動至第二^位溝12,使齒面31與齒部211 無法相互唾合,此時不需使用之撥動件4 0之箭頭係指向位於蓋 =〇之R (Release)處’如第五A圖所示,如此使夹部2 〇與 固疋韻4之間,僅可遵照另一側齒塊3 〇之單一齒距長度單位(公 制或英制單位),調整其夹部空間7。 9 並主要不πΓ 圓至第摘所示,為本發明之另-實施例, -要不戦在於:將㈣37係改設於—連接塊⑼上,該連 接塊6 0上設有—_桿6 1及若干凸柱6 2,而該齒塊3 0上 則設有對應橢圓桿61之橢圓孔71,以及對應凸柱62之凹槽 7 2,當橢圓桿61與橢圓孔71、凸柱6 2與凹槽7 2結合時, 該連接塊6 0可固設於齒塊3 0,將撥動件4 0上、下撥動時, 該齒塊3 0可藉由連接塊6 0而同步位移。 13343751334375 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to the field of hand tools, and more particularly to an adjustable wrench. [Prior Art] In the hand tools commonly used in the industry for turning nuts, especially the adjustable wrench with adjustable size can be arbitrarily adjusted. The traditional type of adjustable wrench side (four) moves to adjust the size of the movable jaw, because the worm There is a gap between the abdomen of the rod and the abdomen of the movable jaw. When the movable jaw is adjusted to clamp the nut and is driven out after the first cycle, the gap will make the size of the jaw smaller, and it cannot be quickly : Undercutting and driving the second cycle not only causes inconvenience, but also makes the lion turn, and the detailed touch position is very time consuming, and the use efficiency is obviously not good. For this problem, as shown in the US Patent No. 523093, in this case, the head of the wrench is placed in a hole, which can be used for two Wei, and the tooth surface of the (four) block is - staggered, and One of the tooth blocks can be used to salvage the active _ strip, and the other tooth block is in a detached state. When the operating portion is moved, the two tooth blocks can be separated from the secret, and the size of the movable cymbal and the fixed cymbal can be adjusted. However, the case only lies in the bottom edge of the movable round rod, with a single rack, so it can only be used for the single-size pitch adjustment, which is added to the joints of the public and English fasteners (6) (for example, the United States). It will cause users to purchase one unit of the public and English units (Metric, SAE) at the same time, which inevitably causes the user to pay extra costs, and it is very inconvenient to find and distinguish in use. For this reason, I especially rely on For this requirement, 5 1334375, an adjustable wrench that can be used in both metric and imperial units of fasteners (Fasteners), such as application number No. 96142656, is also used to make this design more secretive. The user can freely choose the metric single-money inch unit according to the different unit requirements of the fasteners on the m-wound wrench; therefore, the present invention provides an innovative event player as described in detail below. • SUMMARY OF THE INVENTION The object of the present invention is to provide a toothed portion with two different pitches (10) (8) and a toothed block 'tooth distance-for a metric unit, and another for a fresh position, so that the movable wrench can be made' Can be applied to both metric and imperial units of fasteners (Faste_), and in the block of fresh food and wealth - Lai, slaves Ke points · Likong metric or British block positioning at any time, silk far away The shaft is so that the user can follow the different units of the m pieces, and it is easy to operate. • In order to achieve the above object, the present invention employs an adjustable wrench which mainly includes a grip and a movable jaw, wherein a receiving hole for the two tooth blocks is placed in the head of the grip so that the two The tooth block can be moved in the accommodating hole to move toward or away from the movable piece. The two sides of the bottom edge of the live _ guiding portion are provided with two rows of tooth portions, so that the two tooth blocks can be accommodated in the hole. The tooth surface provided by the two money is combined with the corresponding tooth portion and separated, and a positioning portion is arranged between the tooth block and the receiving hole, and the positioning portion=the tooth block can be independently controlled by the dialing member, so that The tooth block can be arbitrarily or eternally separated from the gums 1334375. The hair block of the hair, the strip (4) the tooth block of each different unit = can make the money test unit _, save time, and can be simple and easy The effectiveness of the operation. [Embodiment] The present invention relates to a movable wrench, and the technical means and functions thereof for achieving the above objects and features are first shown in the first figure: The present invention mainly includes a grip! And - the active touch 2, the grip end is set - the head 3 'the head 3-end extension - the solid money 4, the head 3 is longitudinally provided - the strict groove 5 'the head 3 is provided along the transverse direction of the thickness a receiving hole 1 that is in contact with the chute 5 and has a shape of a hole; the tooth 2 has a clamping portion 2, and a guiding portion 21 is formed below the cooling portion 2Q, and the guiding portion 21 is movable In the chute 5, the movable jaw 2 can be moved along the sliding slot 5 through the guiding portion 2 1 to form the clamping portion 2 and the solid (4) (4) - the clamping space 7 for holding the object (please refer to the second figure) The two sides of the bottom edge of the guiding portion 2 i have a toothing portion 2 1 1 'the two rows of tooth portions 2 ! i can be a structure in which the pitch length is different from the earlier position (for example, the toothed portion is in inch) The other part is a male (4), or a structure in which the pitch length is the same and is alternately arranged at intervals; the two sides of the accommodating hole 1Q can be separately arranged. The accommodating hole 1 _ can be used for the tooth block 3 QJ1, the lower movable, and can be close to or away from the material 2 1 of the ^ 2 1 1 , the surface of the 贱 3 3 (10) 卩 2 ! ! is formed - the tooth surface 31 ′ the tooth surface 31 corresponds to the shape of the tooth portion 211 and can be associated with each other 1334375 The bottom surface of the tooth block 3 Q is provided with a hole 3 2 '. The hole 3 2 is provided for an elastic member 3 3 '. The elastic member 3 3 is used for automatically matching the tooth surface 31 and the tooth portion 211 with each other; 'The tooth block 3 〇 and the accommodating W 〇< the corresponding side is provided with a positioning portion'. The positioning portion includes an elastic member 35 and a steel ball 3 6, and the positioning portion is disposed on the side hole 3 of the tooth block 30. 4, and the steel ball 36 is pushed by the elastic member 35 to be slightly exposed on the side hole 3 4 ' face for the steel ball 36 to accommodate the side wall, then a first positioning groove 1 1 and - second positioning The groove 2 is closer to the guiding portion 21' of the movable jaw 2, and the second positioning groove 12 is away from the guiding portion 21 of the activity rhyme 2, and is positioned first by the steel ball 36 of the positioning portion. The positioning groove is completed or the second positioning groove 12 is disposed so that the tooth block 30 can be close to the tooth portion 211 or away from the tooth portion 2 1 1 . Further, the tooth block 3 ◦ ' disposed in the accommodating hole 1 凸 is protruded outward. The frame portion 3 7 has a coupling hole 3 71 formed on both sides of the frame portion 37, and a dialing member 40 is disposed on the frame portion 37. The dial member 40 is provided with a surface corresponding to the tooth block 3 The plug body 4 1 is connected to the plug body 41 A fastening portion 411 is disposed on the two sides. When the insertion body 41 is inserted into the frame portion 37, the fastening hole 361 can be fastened and fastened, so that the dial member 40 can be fixed on the tooth block 30. When the toggle member 40 is pushed up and down, the upper and lower displacements of the tooth block 3 can be synchronously driven, and the steel ball 36 can be slid into the first positioning groove 1 1 or the second positioning groove 12' to determine the tooth. The surface 31 and the tooth portion 211 are in a state of being ready to be engaged or separated for a long time. Further, between the tooth block 30 and the dial member 40, a cover body 50 is provided, and the cover body can be fixed to the head portion 3.浅 〇 〇 〇 之 之 之 13 13 13 334 334 334 334 334 334 334 334 334 334 334 334 334 334 334 334 334 334 334 334 334 334 13 334 334 334 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 13 The guide hole 5 of the frame portion 3 7 and the insertion body 41 is sized to move the frame portion 37 and the insertion body 41 up and down to form an adjustable wrench as shown in the second figure. Please refer to the third and fourth figures. The general condition of the toggle member 4 〇 is not under the 'yarn hole 3 2 (please refer to the figure - figure). ^◦Upwardly pushes the tooth surface 31 and the tooth portion 211 to be in a salivating state, so that the steel ball 36 is positioned in the first positioning groove! ! The first positioning groove ii longitudinally forms a slidable groove distance. When the user pushes and adjusts the nip space 7 between the nip portion 2 颚 and _4, the tooth surface 3 and the tooth portion 2 The engineering department will produce continuous separation and salivation, causing the tooth block 30 to continuously pulsate, indirectly causing the steel ball 36 to slide up and down in the first fixed groove 11. At this time, the arrow of the dial member 4〇 Point to L (Locking) at cover 50 as shown in the second figure. 4 Referring to the fifth and sixth figures, when the user wants to adjust the clip light room 7 to the metric or the English office, it is necessary to make the metal part 4 Q so that the tooth block 2 is away from the tooth surface 31. The tooth portion 2 of the lead portion 2 is machined, and the steel ball 36 is moved from the first positioning groove 11 to the second position groove 12, so that the tooth surface 31 and the tooth portion 211 cannot be mutually reciprocated, and it is not necessary to use it at this time. The arrow of the dial member 40 is directed to the R (Release) of the cover = ' as shown in the fifth A picture, so that the nip portion 2 〇 and the solid 疋 rhyme 4 are used, and only the other side tooth block can be observed. 3 单一 Single pitch length unit (metric or imperial units), adjust its clip space 7. 9 and mainly not π Γ round to the first excerpt, is another embodiment of the present invention, - or not: the (four) 37 series is modified on the connection block (9), the connection block 60 is provided with - _ rod 6 1 and a plurality of studs 6 2, and the tooth block 30 is provided with an elliptical hole 71 corresponding to the elliptical rod 61, and a groove 7 2 corresponding to the stud 62, when the elliptical rod 61 and the elliptical hole 71, the stud When the groove 7 is combined with the groove 7 2 , the connecting block 60 can be fixed to the tooth block 30 , and when the dial member 40 is pushed up and down, the tooth block 30 can be connected by the block 60. Synchronous displacement. 1334375

f圖式簡單說明】 第-圖係本發明之分解圖。 第二圖係轉明之外觀圖。BRIEF DESCRIPTION OF THE DRAWINGS The first diagram is an exploded view of the present invention. The second picture is an external view of the transition.

第三圖係本發嶋動倾 梦ΠΓΤ国β 4 a j之局部分解示意圖 第四圖係本發明撥動件撥_1_。 第五圖係本發鴨動件_後4_ 第五A圖縣發雜祕奸軸之^部^、 第六圖係本發明撥動件撥動後之剖面圖。 第七圖係本發明另一實施例之分解圖。 第八圖係本發明另一實施例之撥動件撥動兮 圖 圖 第九圖係本發明另一實施例 别之剖面圖 之撥動件撥動後之剖面圖 【主要元件符號說明】 1 --握柄 3--頭部 5--滑槽 10-容置孔 12-第二定位溝 2 0-夾部 2 11——齒部 4---- 固定顎 7 ^失部空間 第一定位溝 丄d ^〜淺槽 2 1s〜導弓丨部 30 ^-齒塊 1334375The third figure is a partial decomposition diagram of the 嶋 倾 ΠΓΤ ΠΓΤ β β β β β β β 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四 第四The fifth picture is the hair piece of the hair _ _ 4_ The fifth A picture of the county secrets the traitor axis ^, the sixth picture is the cross-sectional view of the dial of the invention after the toggle. The seventh drawing is an exploded view of another embodiment of the present invention. Figure 8 is a cross-sectional view of the dial member of the cross-sectional view of another embodiment of the present invention. [Main component symbol description] 1 -- Grip 3 - Head 5 - Chute 10 - accommodating hole 12 - Second positioning groove 2 0 - Clamping part 2 11 - Toothed part 4---- Fixed 颚 7 ^ Loss space first Positioning gully d ^ ~ shallow groove 2 1s ~ guide bow 30 30 ^ - tooth block 1334375

3 3-彈性件 3 5-彈性件 3 7-框部 4 0-撥動件 4 11——扣部 5 1-導孔 6 1-橢圓桿 7 1-橢圓孔 3 4-侧孔 3 6-鋼珠 371——結合孔 4 1-插接體 5 0-蓋體 6 0-連接塊 6 2-凸柱 7 2-凹槽3 3-elastic member 3 5-elastic member 3 7-frame portion 4 0-toggle member 4 11 - button portion 5 1-guide hole 6 1-elliptical rod 7 1-elliptical hole 3 4-side hole 3 6- Steel ball 371 - joint hole 4 1-plug body 5 0 - cover body 6 0 - connection block 6 2-bump 7 2-groove

1212

Claims (1)

1334375 13、 根據申請專利範圍第1項所述之活動扳手,其中該活 動顎之兩排齒部係設於導引部底緣兩側者。 14、 根據申請專利範圍第1項所述之活動扳手,其中該齒 塊之齒面,與兩排齒部之形狀呈相對應者。1334375. The adjustable wrench according to claim 1, wherein the two rows of teeth of the movable jaw are disposed on both sides of the bottom edge of the guiding portion. 14. The adjustable wrench according to claim 1, wherein the tooth surface of the tooth block corresponds to the shape of the two rows of tooth portions. 十一、圖式:XI. Schema: 1515
TW97116580A 2008-05-06 2008-05-06 Adjustable wrench TW200946290A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW97116580A TW200946290A (en) 2008-05-06 2008-05-06 Adjustable wrench

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW97116580A TW200946290A (en) 2008-05-06 2008-05-06 Adjustable wrench

Publications (2)

Publication Number Publication Date
TW200946290A TW200946290A (en) 2009-11-16
TWI334375B true TWI334375B (en) 2010-12-11

Family

ID=44211824

Family Applications (1)

Application Number Title Priority Date Filing Date
TW97116580A TW200946290A (en) 2008-05-06 2008-05-06 Adjustable wrench

Country Status (1)

Country Link
TW (1) TW200946290A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI560030B (en) * 2015-07-30 2016-12-01 Ander Chen Open adjustable wrench with rapid opening and micro-adjustment effects
TWI794020B (en) * 2021-12-24 2023-02-21 鴻安國際興業有限公司 Quick adjustable wrench

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI560030B (en) * 2015-07-30 2016-12-01 Ander Chen Open adjustable wrench with rapid opening and micro-adjustment effects
TWI794020B (en) * 2021-12-24 2023-02-21 鴻安國際興業有限公司 Quick adjustable wrench

Also Published As

Publication number Publication date
TW200946290A (en) 2009-11-16

Similar Documents

Publication Publication Date Title
TWI336281B (en)
TWI334375B (en)
TW585807B (en) Improved wrench structure having pivotable box end
TWI531130B (en) Crimping pliers for compression molding
TW201016396A (en) Swing type wrench
TW201822958A (en) Adjustable wrench
DE60236195D1 (en) TEETH ARE DEVICE
TW201114553A (en) Quick-adjustable wrench
TWI241231B (en) Fitting block of quick release bit holder
TWM392038U (en) Reciprocation movable wrench
TWM517065U (en) Open end wrench capable of continuously rotating to lock and release hexagon nut
TWM380192U (en) Clamping structure for vise
TWM384740U (en) Improved structure of opening wrench
TWI362982B (en) Ratchet structure
TWI284078B (en) Adjusting device used in multi-dimensional spanners
TWI241940B (en) Improved rotation structure of wrench
GB2547210A (en) Releasable fastener
TWM520963U (en) Structure of ratchet spanner
TW201020069A (en) Wrench with movable arc-shaped arresting and releasing jaw
KR200376882Y1 (en) Clamp
CN109048702B (en) Replaceable pressing vise structure
TWI301786B (en)
TWI240664B (en) Improved wrench structure
US1142426A (en) Wrench.
TWI580529B (en) A wrench that repeats the operation

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees