Tang Chou Industrial has more than 40 years of professional designing and manufacturing  high quality hand tools.  Our General Manager, Mr. Mou-Tang Liou, is the master engineering designer.  He has hold numerous patents in US, Germany, Taiwan and China.  Our mission is "Designing and Making Innovative Hand Tools for Safe Work and Save Energy".  Our design concepts are to innovate the traditional hand tools for "Foldable", "Interchangeable", "eXtendable", and "Adjustable".  FIX-A problem for the users.

US Patent [2017-10-03] - Adjustable wrench with reinforced structure (US9,776,308 Liou, Mou-Tang)

US Patent [2017-10-03] - Adjustable wrench with reinforced structure (US9,776,308 Liou, Mou-Tang)

Abstract

An adjustable wrench includes a frame and a movable jaw. The frame includes a handle, a fixed jaw, a guiding slot formed between the handle and the fixed jaw, a hole communicated with the guiding slot, and a holding portion. An adjusting screw is rotatably engaged in the hole. The movable jaw includes a guiding portion slidably engaged in the guiding slot, a supporting portion formed at a bottom side of the guiding portion, and an adjusting portion formed at a top side of the guiding portion. The supporting portion is abutted against the holding portion. The adjusting portion is engaged with the adjusting screw.  Link to USPTO.

US Patent [2017-06-06] - Tool head multifunctional tool (US9,670,042 Liou, Mou-Tang)

US Patent [2017-06-06] - Tool head multifunctional tool (US9,670,042 Liou, Mou-Tang)

A multifunctional tool includes a tool head including first, second, third jaws, and first and second engaging spaces. The first engaging space extends between the first and second jaws. The second engaging space extends between the third jaw and a surface facing the third jaw. The first engaging space has first, second, and third lengths defining a maximum space between first sections, a minimum space between second sections, and a minimum space between third sections of the first and second jaws, respectively. The second length is shorter than the first length. The third length is longer than the second length but shorter than the first length. The second engaging space has a fourth length defining a space between the third jaw and the surface. The fourth length is not shorter than the third length.  Link to USPTO.

US Patent [2017-01-24] - Prying Tool (USD777,005 Liou, Mou-Tang)

US Patent [2017-01-24] - Prying Tool (USD777,005 Liou, Mou-Tang)

CLAIM The ornamental design for a prying tool, as shown and described.  Link to USPTO.



German Patent [2016-11-03] - Verstellbarer Schraubenschlüssel mit einer verstärkten Struktur (DE102015106606B3 Liou, Mou-Tang)

German Patent [2016-11-03] - Verstellbarer Schraubenschlüssel mit einer verstärkten Struktur (DE102015106606B3 Liou, Mou-Tang)

[DE] Verstellbarer Schraubenschlüssel (10), aufweisend einen Rahmen (20) und eine bewegliche Backe (30), wobei der Rahmen (20) einen Handgriff (21), eine feststehende Backe (23), einen Führungsschlitz (24), der zwischen dem Handgriff (21) und der feststehenden Backe (23) ausgebildet ist, eine Öffnung (25), die mit dem Führungsschlitz (24) in Verbindung steht und eine Stellschraube (252) drehbar aufnimmt, und einen Halteabschnitt (26) aufweist, und wobei die bewegliche Backe (30) einen Führungsabschnitt (31) aufweist, der in den Führungsschlitz (24) gleitend eingreift, wobei ein Stützabschnitt (32) an einer Unterseite des Führungsabschnitts (31) ausgebildet ist, ein Stellabschnitt (33) an einer Oberseite des Führungsabschnitts (31) ausgebildet ist, der Stützabschnitt (32) an dem Halteabschnitt (26) anliegt, und der Stellabschnitt (33) mit der Stellschraube (252) im Eingriff steht.  Link to DPMA.

German Patent [2016-11-03] - Verstellbarer Schraubenschlüssel mit einer verstärkten Struktur (DE102015106602B3 Liou, Mou-Tang)

German Patent [2016-11-03] - Verstellbarer Schraubenschlüssel mit einer verstärkten Struktur (DE102015106602B3 Liou, Mou-Tang)


[DE] Verstellbarer Schraubenschlüssel (10), aufweisend einen Rahmen (20) und eine bewegliche Backe (30), wobei der Rahmen (20) einen Handgriff (21), eine feststehende Backe (23), einen Führungsschlitz (24), der zwischen dem Handgriff (21) und der feststehenden Backe (23) ausgebildet ist, eine Öffnung (25), die mit dem Führungsschlitz (24) in Verbindung steht und eine Stellschraube (252) drehbar aufnimmt, und einen Halteabschnitt (27) aufweist, und wobei die bewegliche Backe (30) einen Führungsabschnitt (31) aufweist, der in den Führungsschlitz (24) gleitend eingreift und an dessen Unterseite ein Stützabschnitt (32) und ein Stellabschnitt (33) ausgebildet sind, wobei der Stützabschnitt (32) an dem Halteabschnitt (27) anliegt, und der Stellabschnitt (33) mit der Stellschraube (252) im Eingriff steht.  Link to DPMA.

US Patent [2015-10-20] - Multi-function tool (US9,162,351 Liou, Mou-Tang)

US Patent [2015-10-20] - Multi-function tool (US9,162,351 Liou, Mou-Tang)

A multi-function tool includes a shank body, a pry bar, at least one clutch, a foot hold, and a fine adjustment mechanism. The shank body includes a plurality of located grooves. The pry bar includes a first receptacle adapted for the shank body inserted therethrough. The foot hold is mounted on the shank body. The fine adjustment mechanism for fine adjusting the pry bar is mounted on the shank body and engaged with the pry bar and includes at least one second receptacle. Furthermore, the at least one clutch is disposed in the at least one second receptacle and alternatively engaged with a selective one of the plurality of located grooves of the shank body Furthermore, the pry bar is adapted to be fine adjustably moved through a distance smaller than a pitch between two adjacent located grooves.  Link to USPTO.


US Patent [2015-07-07] - Screwing Tool (US9,073,182 Liou, Mou-Tang)

US Patent [2015-07-07] - Screwing Tool (US9,073,182 Liou, Mou-Tang)

A screwing tool includes an engaging member adapted to be gripped as a handle including a first inserting member. A biasing member is received within the engaging member. A driving member includes a driving head and a guiding groove at two different ends. The guiding groove receives the first inserting member. The first inserting member interconnects the engaging member and the driving member. The biasing member is disposed between the driving member and the engaging member. A control ring receives the driving member and is selectively movable between a first position disposed at a first relative position with respect to the engaging member and in which the screwing tool becomes an impact screwdriver, and a second position disposed at a second relative position with respect to the engaging member and in which the screwing tool becomes a regular screwdriver.  Link to USPTO.


US Patent [2013-10-08] - Tool with working and positioning devices (US8,550,437 Liou, Mou-Tang)

US Patent [2013-10-08] - Tool with working and positioning devices (US8,550,437 Liou, Mou-Tang)

A tool includes a handle, a working device, a positioning device, a clamping device, and a fine adjustment mechanism. The handle includes a pivotal end, a grip end, and a plurality of retaining sections. The working device is pivotally connected to the pivotal end of the handle. The positioning device is moveable between a fixing position and an adjusting position. The clamping device is adjustably positioned on the handle. The fine adjustment mechanism for fine adjusting the clamping device is adjustably positioned on the handle and engaged with the clamping device. The fine adjustment mechanism includes at least one positioning unit alternatively engaged with a selective one of the plurality of retaining sections to fix the clamping device to the handle in position. The clamping device is adapted to be fine adjustably moved through a distance smaller than a pitch between two adjacent retaining sections.  Link to USPTO.


US Patent [2013-04-02] - Tool with working heads and positioning unit (US8,408,099 Liou, Mou-Tang)

US Patent [2013-04-02] - Tool with working heads and positioning unit (US8,408,099 Liou, Mou-Tang)

A tool includes a handle including a pivotal end, a holding end held by the user in use of the tool and a plurality of teeth formed on an outer periphery of the pivotal end. A first working head includes a pivotal end coupled to the pivotal end of the handle pivotally, a working end engaged with a work piece desired to be driven and an aperture between the pivotal end of the first working head and the working end. A positioning unit includes a positioning plate and an elastic element received in the aperture, with the positioning plate hooking the first working head and pressing the elastic element of the positioning unit respectively. A restricted portion protrudes from the positioning plate between two ends of the positioning plate toward the pivotal end of the handle.  Link to USPTO.


US Patent [2012-07-10] - Prying tool (US8,215,617 Liou, Mou-Tang)

US Patent [2012-07-10] - Prying tool (US8,215,617 Liou, Mou-Tang)

A prying tool includes a shank having an engaging portion and two prongs moveably mounted on the engaging portion of the shank. The prongs define a space therebetween such that an item to be pried is received in the space. The prongs are operably moveable so that the space is variable in size. Further, two positioning devices are utilized for holding the two prongs stationary with respect to the engaging portion of the shank respectively.  Link to USPTO.


US Patent [2012-06-19] - Tool with working and positioning devices (US8,201,806 Liou, Mou-Tang)

US Patent [2012-06-19] - Tool with working and positioning devices (US8,201,806 Liou, Mou-Tang)

A tool adapted for prying includes a handle including a pivotal end and a grip end, with the pivotal end having a through-hole. A working device has first and second ends. The first end of the working device is pivotally connected to the pivotal end of the handle and includes a positioned hole formed transversely and a cavity formed longitudinally and communicating with the positioned hole, with the positioned hole corresponding to the through-hole. A positioning device is disposed at the through-hole, the positioned hole and the cavity and moveable between a fixing position and an adjusting position.  Link to USPTO.


US Patent [2012-05-15] - Multi-function tool (US8,177,191 Liou, Mou-Tang)

US Patent [2012-05-15] - Multi-function tool (US8,177,191 Liou, Mou-Tang)

A multi-function tool comprises a shank body including a plurality of located grooves aligned thereon longitudinally; a pry bar including a first section, a second section extending from the first section for prying, a first receptacle longitudinally piercing the first section for slidably mounted on the shank body and two second receptacles transversely piercing the first section and in communication with the first receptacle; two clutches respectively disposed in the second receptacles for alternatively engaging with a selective one of the located grooves; and a foot hold disposed onto the bottom of the first receptacle; wherein the second end of the shank body is inserted through the first receptacle of the pry bar and installed to the foot hold, with the foot hold being able to rotate relative to the shank body.  Link to USPTO.