TW200934613A - Tool dumping device for a tool magazine - Google Patents

Tool dumping device for a tool magazine

Info

Publication number
TW200934613A
TW200934613A TW97105085A TW97105085A TW200934613A TW 200934613 A TW200934613 A TW 200934613A TW 97105085 A TW97105085 A TW 97105085A TW 97105085 A TW97105085 A TW 97105085A TW 200934613 A TW200934613 A TW 200934613A
Authority
TW
Taiwan
Prior art keywords
clamping
shaft
tool
tool magazine
pivoting
Prior art date
Application number
TW97105085A
Other languages
Chinese (zh)
Other versions
TWI321075B (en
Inventor
Sing-Rong Liou
Original Assignee
New Gifu Entpr 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 New Gifu Entpr Co Ltd filed Critical New Gifu Entpr Co Ltd
Priority to TW97105085A priority Critical patent/TWI321075B/en
Publication of TW200934613A publication Critical patent/TW200934613A/en
Application granted granted Critical
Publication of TWI321075B publication Critical patent/TWI321075B/en

Links

Abstract

A tool dumping device for a tool magazine comprises a pressure cylinder, a driving member, a pivoting member, a clamping member and an elastic abutting member. The pressure cylinder links the driving member to move by a transmission shaft. The driving member then drives the pivoting member to pivot about the clamping member. The clamping member utilizes the abutting member to abut against the pivoting member in such a manner that the clamping member and the pivoting member clamp both sides of a tool pot. By such arrangements, the tool pot can be dismantled for replacing tool.

Description

200934613 九、發明說明: 【發明所屬之技術領域】 本發明與機床的部件有關,特別是指一種刀庫倒刀裝 置。 【先前技術】 加工用的切削機台,是以其上的刀具對工件進行切削加 〇 工,而在進行不同種類加工時,就必須更換刀具,以往的作 法,如第6及7圖所示,是將各種類的刀具裝在一刀庫A上, 1 刀庫A内具有一可旋轉的刀盤A1,刀盤A1上組裝有複數刀 ' 套A2,刀具則裝在刀套A2上,當要更換刀具A2,便旋轉刀 盤A1,讓要使用的刀套A2由刀庫A外露,如此便能拆下刀 套A2以更換刀具; 不過如前述的刀庫A,在拆卸刀套A2以更換刀具的過 〇 程中,仍是以人工手動拆卸,尚無自動化的設備,本發明人 便針對自動化的目標,開發出一種刀庫倒刀裝置。 【發明内容】 本發明為一種刀庫倒刀裝置,其以樞擺件與夾合件夾合 刀套後進行拆卸,達到自動化的目的。 5 200934613 為達前述目的,該倒刀裝置包含一壓缸、一驅動件、— 框擺件、-夾合件及-彈性抵頂件,該㈣具—可軸向往復 位移的傳動軸’該傳動軸與該驅動件連接,該驅 刑— 夹持口,該框擺件_在該刀庫且具—軸,該驅動件^持 口由侧面活動地套設在該_件_上,該夾合件又與該樞 Ο ❹ 擺件同軸㈣在該刀庫,該彈性抵頂件設置在該夾合件上並 抵頂於該樞擺件; 使用時’驅動該壓缸的傳動軸沿軸向一端位移,便能連 動該驅動件位移,該驅動件又推動該枢擺件的軸在該夾持口 :位移而帶動該框擺件樞轉’該_件又會抵頂該彈性抵頂 ”而連動該夾合件_,使該央合件扣合於該刀套一側,再 2壓㈣傳動軸向另—端位移,令該枢擺件反向樞轉且與 〜件由兩側拼合刀套’繼續驅動該壓缸的傳動軸 能拆卸刀套。 【實施方式】 树明刀庫倒刀|置,實施例如第i及2圖所示,包含: 傳動具—成財外觀111的傳動軸n,且該 位 而雜向往復位移,而驅龍傳動軸11 有氣壓或油壓等方式,乃是f知技術故不贊述, 咖〇又以其傳動轴u貫穿—結合座12的穿孔121, 200934613 令該結合座12與該壓幻〇結合,該結合座12供該壓紅1〇 固定在刀庫上; -驅動件2〇,一端成型—穿孔2()1供該壓紅^的傳動 軸11貝?’該穿孔201兩側又各以一螺帽2〇2與該傳動轴 11的外螺紋111螺合,令該二螺帽202夾住該驅動件2〇而 使該驅動件2G與該壓缸1Q的傳動軸11連接,該_件2Q 另:端成型二夾持口 2卜該各夾持σ 21具容置空間叫, 且該各容置空間211向該傳動軸u的徑向延伸,該二夹持 口 21間又具一容納空間22 ; 樞擺件30 5 —— ❹ 端以一穿孔301供一軸31穿設,且另 一端成型為夾部32,該軸31兩端各套設—套環3ιι,該轴 31與該夾部32之間具-穿孔33,該驅動件2()的二夹持口 21沿該車由31的徑向活動地套設在該車由31兩端的套環如 2面上’令該軸31的二套環31 w立於該二夹持口 Μ的容置 空間211内,且該軸31的延伸方向又與該壓缸傳動轴 11的延伸方向垂i ’該樞擺件3〇穿設有該車由31之端並容 置於该驅動件2〇的容納空間22内; 二一夾合件40,具兩相對的穿孔4〇1,且該二穿孔4〇丨内 各设置-限位套4G2 ’並以-樞軸41依序貫f該―限位套 術、該掩擺件3G的穿孔33及該另一限位套,令該框 擺件30肖該夾合件4〇以該樞軸41框接,且該爽合部扣具 7 200934613 一與該極擺件30夾部32相對的扣部42,並相對該樞擺件 30穿设有該軸31之端開設一透孔43 ;以及 -彈性抵頂件50,由一基部5卜—彈簧52及—推部 ^構成,該彈簧52設置於該基部51與該推部53間,該基 邻51 δ又置在該夾合件4〇的透孔43内,該推部Μ則抵 該樞擺件30穿設該軸31的端上。 、、 ❹ ❹ —使用上’如第3圖所示,先將該墨幻〇的結合座U固 疋在。亥刀庫Α上’該夾合件4G的樞㈣㈣在該刀庫a上, π 乂樞^件30與料合件4Q同她設在該刀庫a,當旋轉 該刀盤A1讓要使用的刀套仏旋轉至與該倒刀裝置相對時, ’’動Λ[虹10使其傳動軸u軸向伸出,該傳動轴Η會連 9動該驅動件2〇軸向位移,該驅動件20又能以該二㈣口 二動=擺:3。軸31的二套環311在該二夾持口 21的 讓該框擺件別同時以該夹合件仙的 該為中心而相對該刀W樞轉,該枢擺件3〇又會抵頂 連^ Μ的推部%,該推部53魏縮該彈簧52且 能^夾合件4G與該_件3Q同向樞轉,該夾合件㈣ :;Μ 42通過該刀庫A的缺口 A3扣合在該刀套仏的一 此時再如第4圖所示,驅動該壓缸10使其傳_ u軸 8 ❹200934613 IX. DESCRIPTION OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to components of a machine tool, and more particularly to a tool magazine. [Prior Art] The cutting machine for machining uses the tool on the cutting tool to cut the workpiece. When different types of machining are performed, the tool must be replaced. The conventional method is shown in Figures 6 and 7. It is to install various kinds of tools on a tool magazine A. 1 The tool magazine A has a rotatable cutter head A1. The cutter head A1 is assembled with a plurality of cutters 'set A2, and the cutter is mounted on the cutter sleeve A2. To change the tool A2, rotate the cutter head A1 so that the tool holder A2 to be used is exposed by the tool magazine A, so that the tool holder A2 can be removed to replace the tool; however, as in the aforementioned tool magazine A, the tool holder A2 is removed. In the process of changing the tool, it is still manually removed manually, and there is no automatic equipment. The inventors have developed a tool magazine for the purpose of automation. SUMMARY OF THE INVENTION The present invention is a tool magazine reverse tool device, which is disassembled after the tool holder is clamped by the pivoting member and the clamping member to achieve the purpose of automation. 5 200934613 For the above purpose, the squeezing device comprises a pressure cylinder, a driving member, a frame splicing member, a clamping member and an elastic abutting member, and the (four) has a transmission shaft axially reciprocally displaceable The shaft is coupled to the driving member, the severance-clamping port, the frame splicing _ is in the arbor and has a shaft, and the driving member is movably sleeved on the _ piece by the side, the clamping The member is coaxial with the pivoting member (4) in the tool magazine, the elastic abutting member is disposed on the clamping member and abuts against the pivoting member; when used, the driving shaft driving the pressure cylinder is displaced along one axial end The driving member can be interlocked, and the driving member pushes the shaft of the pivoting member to the clamping port: the displacement causes the frame member to pivot, and the member further abuts the elastic abutting and interlocks the clamping member The _ _, the centering piece is fastened to one side of the knives, and then the second (4) drive shaft is axially displaced at the other end, so that the pivoting member is pivoted in the opposite direction and the splicing of the splicing sleeve is continued The drive shaft that drives the pressure cylinder can disassemble the knife sleeve. [Embodiment] The tree cutter is inverted, and the implementation is as shown in the first and second figures. Including: transmission gear - the transmission shaft n of the wealth appearance 111, and this position and the misalignment of the reciprocating displacement, and the drive shaft 11 of the drive shaft has air pressure or oil pressure, etc., is not known to the technology, the curry Through the transmission shaft u through the perforation 121 of the coupling seat 12, 200934613, the coupling seat 12 is combined with the pressure illusion, the binding seat 12 is fixed on the arbor; the driving member 2 〇, one end Forming - perforation 2 () 1 for the red shaft of the drive shaft 11? 'The perforation 201 is further screwed to the external thread 111 of the drive shaft 11 by a nut 2〇2, so that the second nut 202 clamping the driving member 2〇 to connect the driving member 2G to the driving shaft 11 of the pressing cylinder 1Q, the _ member 2Q is another end forming two clamping ports 2, and each clamping σ 21 has a receiving space called The accommodating space 211 extends in the radial direction of the transmission shaft u. The two clamping ports 21 have a receiving space 22 therebetween. The pivoting member 30 5 —— the end is provided with a through hole 301 for a shaft 31. The other end is formed as a clamping portion 32, and the two ends of the shaft 31 are sleeved with a collar 3 ιι, and the shaft 31 and the clamping portion 32 have a through hole 33, and the two clamping ports 21 of the driving member 2 () The vehicle is radially movably disposed on the collar of the vehicle 31 from the two sides of the sleeve, such as two sides, so that the two sleeves 31 of the shaft 31 are disposed in the accommodating space 211 of the two clamping ports, and The extending direction of the shaft 31 is further perpendicular to the extending direction of the cylinder drive shaft 11. The pivoting member 3 is bored with the end of the vehicle 31 and received in the receiving space 22 of the driving member 2〇; a clamping member 40 having two opposite perforations 4〇1, and each of the two perforations 4〇丨 is provided with a limit sleeve 4G2′ and sequentially with the pivot axis 41, the cover sleeve, the cover The through hole 33 of the cover 3G and the other limit sleeve are arranged such that the frame member 30 is framed by the pivot member 41, and the hinge portion buckle 7 is connected to the pole piece 30 32, the opposite button portion 42 defines a through hole 43 with respect to the end of the pivoting member 30 through which the shaft 31 is disposed; and the elastic abutting member 50 is composed of a base portion 5 - a spring 52 and a pushing portion The spring 52 is disposed between the base portion 51 and the pushing portion 53. The base portion δ is further disposed in the through hole 43 of the clamping member 4, and the pushing portion passes through the shaft 31 to the pivoting member 30. On the end. 、 ❹ ❹—Used as shown in Figure 3, the binding seat U of the ink illusion is first fixed. On the Knife Library, the pivot (4) (4) of the clamping member 4G is on the tool magazine a, and the π 乂 pivot member 30 and the material fitting member 4Q are disposed in the tool magazine a, and when the cutter head A1 is rotated, it is used. When the knife sleeve is rotated to oppose the reverse knife device, ''moving [Xi 10 causes its transmission shaft u to axially extend, the transmission shaft Η will be 9-moving the drive member 2 〇 axial displacement, the drive The piece 20 can be moved by the two (four) mouths = pendulum: 3. The two sets of rings 311 of the shaft 31 are pivoted relative to the knife W at the same time as the frame member of the two clamping ports 21, and the pivoting member 3 is again connected to the top. The pushing portion 53 of the cymbal, the pushing portion 53 swells the spring 52 and can clamp the clamping member 4G in the same direction as the _ member 3Q, the clamping member (4): Μ 42 is buckled through the notch A3 of the tool magazine A At the same time as shown in Fig. 4, the cylinder 10 is driven to transmit the cylinder 10 so that it transmits _u axis 8 ❹

取俊如第5圖所示 200934613 ’該驅動件20受連動而反向位移,並令該樞擺件30 的軸3!反向在該二夹持σ 21内位移,使該樞擺件⑽反向 樞轉,該柩擺件30的夾部32便能夾合在該刀套Μ的另一 側,該彈性抵頂件5G的彈簧52並復原且推抵該夹合件4〇 , 讓該夾合部40與該_件3(>以相反的方_轉,使該夹合 件4〇的扣部42持續扣合於該刀套A2上,讓該樞擺件3〇的 夾部32與該夹合件4G的扣部⑵由兩侧箝合該刀套仏· 上…H、厂哥勒釉11持續軸 向縮回,該驅動件2。持續位移而帶動該樞擺件%繼續框 轉’该樞擺件3G框轉時又會用該夹部Μ以轉的方式將該 刀套A2由該刀㈣上取下,並由频⑽取出,在該框 擺件3〇樞轉時,該彈性抵頂件的推部53會受該樞擺件 3〇的推抵而推動該彈簧52,該彈簧52又會推抵該基部51 使该夾合件40的扣部42保持扣合於該刀套Α2的狀態,如 此便能更換該刀套Α2上的刀具(圖中未示),達到自動化的 目的。 200934613 【圖式簡單說明】 第1圖 本發明實施例的分解圖。 第2圖 本發明實施例的立體圖。 第3圖 本發明實施例爽合件的扣部扣合在刀套的示意圖。 第4圖 本發明實施例樞擺件與夾合件箝合刀套的示意圖。 第5圖 本發明實施例拆卸刀套的示意圖。 第6圖 習知刀套組裝於刀盤的示意圖。 ® 第7圖 習知刀庫的示意圖。 •【主要元件符號說明】 - 《習知》 刀庫A 刀盤A1 刀套A2 0 《本發明》 壓缸10 傳動轴11 外螺紋111 結合座12 穿孔121 驅動件20 穿孔201 螺帽202 10 200934613 夹持口 21 容置空間211 容納空間22 枢擺件3 0 穿孔301 轴31 套環311 夾部32 穿孔33 夾合件40 穿孔401 限位套402 枢轴41 扣部42 透孔43 彈性抵頂件50 基部51 彈簧52 推部53 刀庫A 刀盤A1 刀套A2 缺口 A3As shown in Fig. 5, 200934613 'The drive member 20 is reversely displaced by linkage, and the axis 3! of the pivot member 30 is reversely displaced within the two clamping σ 21 to reverse the pivoting member (10). Pivot, the clamping portion 32 of the cymbal holder 30 can be clamped on the other side of the arbor sleeve, and the spring 52 of the elastic abutting member 5G is restored and pushed against the clamping member 4 〇 to allow the clamping The portion 40 and the member 3 (> in the opposite direction, the buckle portion 42 of the clamping member 4〇 is continuously fastened to the knife sleeve A2, and the clamping portion 32 of the pivoting member 3〇 is The buckle portion (2) of the clamping member 4G is clamped by the both sides of the knife sleeve 仏·...H, the factory glaze 11 is continuously axially retracted, and the driving member 2 is continuously displaced to drive the pivoting member to continue to rotate. When the pivoting member 3G is rotated, the sleeve A2 is removed from the knife (4) by the clamping portion, and is taken out by the frequency (10). When the frame member 3 is pivoted, the elastic is resisted. The pushing portion 53 of the top piece is pushed by the pivoting member 3 to push the spring 52, and the spring 52 pushes against the base portion 51 to keep the buckle portion 42 of the clamping member 40 engaged with the knife sleeve 2 State, so that the knife cover can be replaced The tool on the 2 (not shown) achieves the purpose of automation. 200934613 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded view of an embodiment of the present invention. Fig. 2 is a perspective view of an embodiment of the present invention. FIG. 4 is a schematic view showing the sleeve of the hinge member and the clamping member of the embodiment of the present invention. FIG. 5 is a schematic view of the embodiment of the present invention. Schematic diagram of the conventional tool holder assembled on the cutter head. ® Figure 7 Schematic diagram of the conventional tool magazine. • [Main component symbol description] - "Knowledge" Tool magazine A Cutter A1 Knife holder A2 0 "Invention" Pressure Cylinder 10 drive shaft 11 external thread 111 joint seat 12 perforation 121 drive member 20 perforation 201 nut 202 10 200934613 grip port 21 accommodation space 211 accommodation space 22 pivot member 3 0 perforation 301 shaft 31 collar 311 clamp portion 32 perforation 33 Clamping member 40 Perforation 401 Restriction sleeve 402 Pivot 41 Button portion 42 Through hole 43 Elastic abutment member 50 Base 51 Spring 52 Push portion 53 Tool magazine A Cutter A1 Knife holder A2 Notch A3

1111

Claims (1)

200934613 十、申請專利範圍: 1. 一種刀庫倒刀裝置,其包含: 一壓缸,具一可轴向往復位移的傳動軸; 一驅動件,與該壓缸的傳動轴連接,且該驅動件上成 型一夾持口; 一樞擺件,樞設在該刀庫,該樞擺件具一軸,且該驅 動件的失持口由該軸的侧面活動地套設在該軸上,當該驅 Θ 動件受該壓缸的傳動轴連動而轴向位移,可推動該植擺件 的轴在該驅動件的夹持口内位移’令該框擺件相對該刀庫 •樞轉; -一夾合件,與該柩擺件同轴樞設在該刀庫;以及 一彈性抵頂件,設置在該夾合件上且以彈性抵頂於該 樞擺件,當該樞擺件向該彈性抵頂件樞轉,可推動該夾合 件與該枢擺件同向樞轉,該夾合件並扣合於該刀庫内刀盤 上刀套的一侧,驅動該壓缸的傳動軸向另一端位移,令該 樞擺件反向枢轉且與該夾合件由兩侧箝合刀套且以樞轉方 式將刀套由刀盤上拆下。 2. 如申請專利範圍第1項所述的刀庫倒刀裝置,其中, 該驅動件的夾持口向該壓缸傳動軸的徑向延伸。 12 〇 〇 200934613 ;.如申請專利範圍第j項所述的刀庫倒刀裝置,其中, :樞擺件的軸的延伸方向_壓缸的傳動軸的延 二5·如申請專利範圍第j項所述的刀庫倒刀裝置,其中, 該樞擺件1穿設該軸且另—端成型為夹部,該插擺件與 j合件樞設的位置位於該枢擺件的軸與夾部之間,該央 5 °卩並具一與該樞擺件夹部相對的扣部。 6.如申明專利|巳圍帛j項所述的刀庫倒刀袭置,其中, 該彈性抵頂件由—基部、―彈簧及—推部構成,該彈菩設 置於該基部無推㈣,絲部設置在該夾合件上,該推 部則抵頂於該樞擺件。 7.如申請專利範圍第1項所述的刀庫倒刀震置,其中, 該壓紅上設置-結合座’以供該壓飯固定在該刀庫上。 13200934613 X. Patent application scope: 1. A tool magazine reverse knife device, comprising: a pressure cylinder having an axially reciprocating displacement drive shaft; a drive member connected to the drive shaft of the pressure cylinder, and the drive Forming a clamping port on the piece; a pivoting member pivotally disposed on the tool magazine, the pivoting member has a shaft, and the lost holding port of the driving member is movably sleeved on the shaft by the side of the shaft, when the driving The movable member is axially displaced by the driving shaft of the pressure cylinder, and can push the shaft of the planting member to be displaced in the clamping port of the driving member to make the frame member pivot relative to the tool magazine; - a clamping member And the elastic member is coaxially disposed on the tool holder; and an elastic abutting member is disposed on the clamping member and elastically abuts against the pivoting member when the pivoting member pivots toward the elastic abutting member The clamping member can be driven to pivot in the same direction as the pivoting member, and the clamping member is fastened to one side of the cutter sleeve on the inner cutter head of the cutting chamber, and the other end of the driving shaft of the hydraulic cylinder is driven to be displaced. The pivoting member is pivoted in the opposite direction and the sleeve is clamped from both sides with the clamping member and the sleeve is pivotally Remove the cutter. 2. The tool magazine according to claim 1, wherein the clamping opening of the driving member extends in a radial direction of the cylinder driving shaft. 12 〇〇200934613;. The tool magazine inverse tool device according to the scope of claim j, wherein: the extending direction of the shaft of the pivoting member _ the extension of the transmission shaft of the pressure cylinder 5, as claimed in the jth item The tool magazine reversing device, wherein the pivoting member 1 passes through the shaft and the other end is formed as a clamping portion, and the position of the insertion member and the j-piece is pivoted between the shaft and the clamping portion of the pivoting member The central portion has a buckle portion opposite to the clamping portion of the pivoting member. 6. As claimed in the patent | 巳 帛 帛 的 j j j j j j j j j j j j j j j j j j j j The wire portion is disposed on the clamping member, and the pushing portion is abutted against the pivoting member. 7. The tool magazine inverted tool according to claim 1, wherein the pressure is provided with a - joint seat for the press to be fixed on the tool magazine. 13
TW97105085A 2008-02-13 2008-02-13 Tool dumping device for a tool magazine TWI321075B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW97105085A TWI321075B (en) 2008-02-13 2008-02-13 Tool dumping device for a tool magazine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW97105085A TWI321075B (en) 2008-02-13 2008-02-13 Tool dumping device for a tool magazine

Publications (2)

Publication Number Publication Date
TW200934613A true TW200934613A (en) 2009-08-16
TWI321075B TWI321075B (en) 2010-03-01

Family

ID=44866311

Family Applications (1)

Application Number Title Priority Date Filing Date
TW97105085A TWI321075B (en) 2008-02-13 2008-02-13 Tool dumping device for a tool magazine

Country Status (1)

Country Link
TW (1) TWI321075B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI424899B (en) * 2010-12-03 2014-02-01 Chen Sound Ind Co Ltd Guiding mechanism of chain type tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI424899B (en) * 2010-12-03 2014-02-01 Chen Sound Ind Co Ltd Guiding mechanism of chain type tool

Also Published As

Publication number Publication date
TWI321075B (en) 2010-03-01

Similar Documents

Publication Publication Date Title
JP4665030B2 (en) T5 terminal mounting tool
WO2005053785A3 (en) Multi-function clamping device with stapler and ablation heads
WO2006036761A3 (en) Tool free collet assembly
EP2987590A1 (en) Screw clamping device and screw tool
CN207914688U (en) Binding clip for cutting tool
TWM257905U (en) Device for cutting curtain component
CN102485389A (en) Saw blade clamping device
TW200934613A (en) Tool dumping device for a tool magazine
TW201223694A (en) Guiding mechanism of chain type tool
CN214214807U (en) Sealing washer bonding pincers
TWI310715B (en) Upright knife storage device
CN112045580B (en) Clamp tool and adjustable limiting mechanism
US7165300B2 (en) Portable pocket cutter
CN213857078U (en) Angle head capable of adjusting positioning distance and positioning device thereof
WO2006033213A1 (en) Mounting tool for c-type clip
CN209937126U (en) Chain saw for cutting bamboo wood
CN210160465U (en) Perforating machine convenient to center
KR20090105610A (en) Tool dumping device for a tool magazine
TWI377110B (en) Fast detachable secondary axis gripper
CN220372732U (en) Connecting rod clamping device
KR200494439Y1 (en) Clamp for Processing Toggle Pin
US11167441B2 (en) Handheld punching device
CN115570205B (en) Cutting tool
CN219170676U (en) Motorcycle accessory adds clamping apparatus
CN218015795U (en) Rubber tube rubber stripping device convenient for tool changing

Legal Events

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