TWI613043B - Pipe wrench - Google Patents

Abstract

A pipe wrench includes a head, and the head has a first hole defining a central axis. The tube wrench includes a first jaw clamp and a second jaw clamp, the first jaw clamp is coupled to the head and has a plurality of teeth defining a first contact area, and the second jaw clamp partially extends through The hole in the head has a threaded portion and a plurality of teeth defining a second contact area. The second contact area extends beyond the first contact area in a direction parallel to the side surface of the head. The pipe wrench includes: a biasing mechanism disposed in the first hole to align the threaded portion of the second jaw clamp with the central axis of the first hole; and an actuator having The thread engaging the threaded portion of the second jaw clamp causes the rotation of the actuator to move the second contact region of the second jaw clamp relative to the first contact region of the first jaw clamp.

Description

Pipe wrench Cross-references to related applications

This application is a part of consecutive applications and claims the priority of joint application US Patent Application No. 14 / 226,221 filed on March 26, 2014, and this US Patent Application No. 14 / 226,221 claims 2013 The priority of US Provisional Patent Application No. 61 / 805,422 filed on May 26, and the entire contents of all such patent applications are incorporated herein by reference.

This application also claims U.S. Provisional Patent Application No. 62 / 180,255 filed on June 16, 2015, U.S. Provisional Patent Application No. 62 / 094,465 filed on December 19, 2014, and August 27, 2014 U.S. Provisional Patent Application No. 62 / 042,602, and the entire contents of all such patent applications are incorporated herein by reference.

background

The invention relates to wrenches, and in particular to pipe wrenches.

Pipe wrenches are often used to rotate, lock, or otherwise manipulate pipes, valves, and other line components. Some types of tube wrenches include a fixed jaw clamp and a hook jaw that can be moved relative to the fixed jaw clamp to adjust The distance between jaws. Because pipe wrenches are often used to apply torque to rotate a work piece, such jaws typically include a majority of teeth to increase grip.

summary

In one embodiment, a pipe wrench includes: a head having a first hole; a first jaw clamp coupled to the head and having a plurality of teeth defining a first contact area; and a first A two-jaw clamp partially extending through the hole in the head and having a threaded portion and a plurality of teeth defining a second contact area. The second contact area extends beyond the first contact area in a direction parallel to the side surface of the head. The second contact area defines a width. The pipe wrench also includes an actuator having a thread engaged with the threaded portion of the second jaw clamp such that rotation of the actuator causes the second contact area of the second jaw clamp to be relative to the first jaw clamp. The jaw clamp moves the first contact area; and an extended grip is detachably coupled to the head. The extended grip and the second jaw clamp define a length. A ratio of the width of the second contact area to the length is less than about 0.1.

In another embodiment, a pipe wrench includes: a head having a first hole; a first jaw clamp coupled to the head and having a plurality of teeth defining a first contact area; a first Two jaw clips extending partially through the hole of the head and having a threaded portion and a plurality of teeth defining a second contact area; an actuator having the threaded portion with the second jaw clip The engaged thread causes the rotation of the actuator to move the second contact area of the second jaw clip relative to the first contact area of the first jaw clip; and a grip having a proximal portion And a remote part. The distal part depends on Proximal to the head and the proximal portion is opposite the distal portion. The proximal portion includes an inner hole. The tube wrench also includes a first extended grip selectively coupled within the inner hole.

In yet another embodiment, a pipe wrench includes a head having a first hole defining a central axis. The tube wrench includes a first jaw clamp and a second jaw clamp, the first jaw clamp is coupled to the head and has a plurality of teeth defining a first contact area, and the second jaw clamp partially extends through The hole in the head has a threaded portion and a plurality of teeth defining a second contact area. The second contact area extends beyond the first contact area in a direction parallel to the side surface of the head. The pipe wrench includes: a biasing mechanism positioned in the first hole to align the threaded portion of the second jaw clamp with the central axis of the first hole; and an actuator having a contact with the The thread engaging the threaded portion of the second jaw clamp causes the rotation of the actuator to move the second contact area of the second jaw clamp relative to the first contact area of the first jaw clamp.

10,110,210,310,410,510,610,710,910‧‧‧ wrench

12,112,212,312,412,512,612,712,812,912‧‧‧‧

13,113,713,813‧‧‧Inner hole

14,114,414‧‧‧Head

15‧‧‧internal thread

16,216,716‧‧‧proximal part

18,218‧‧‧Remote part

19,94‧‧‧concave

21‧‧‧ the second recess

22,70,270‧‧‧holes

23‧‧‧ end cap

25,268,368,968‧‧‧ pins

27‧‧‧Second radial groove

28‧‧‧ fixed jaw clamp

29‧‧‧first radial groove

30,130‧‧‧Hook and Jaw Clip

31,44‧‧‧distance

32,34‧‧‧tooth

35‧‧‧ ring member

36,38‧‧‧Contact area

40,42,98,99,272,274‧‧‧arrow

45‧‧‧ flat surface

52,152‧‧‧thumbwheel

54‧‧‧Thread

56‧‧‧Groove

58,58a, 58b‧‧‧Thread

60‧‧‧Vertical Orientation Groove

61‧‧‧Mark

62,267,367‧‧‧concave hole

64‧‧‧ flange

65‧‧‧ radius

66‧‧‧Thread distance; pitch

68‧‧‧lead distance

72‧‧‧ front wall

74‧‧‧ rear wall

75‧‧‧ intermediate components

76, 96‧‧‧ far

78‧‧‧ floating or biasing mechanism

84‧‧‧ Coil Spring

86,88‧‧‧Guide wall

90‧‧‧ web

91,191,791‧‧‧Extended grip

91a‧‧‧shorter grip

91b‧‧‧longer grip

93‧‧‧ male thread

97‧‧‧ Thumb release part

146‧‧‧First auxiliary driving surface

148‧‧‧Second auxiliary driving surface

150‧‧‧ auxiliary driver

151‧‧‧cover

153‧‧‧tube

155‧‧‧ square protrusion

187‧‧‧Sleeve

228,230‧‧‧Jaw clip

276,576‧‧‧overlapping area

278,678,778

280‧‧‧ latching protrusion

282‧‧‧Snap hole

291,391,491,591,691,991‧‧‧Extended members

378‧‧‧Hook and hole mechanism

384,698,798 ‧‧‧ cavity

386‧‧‧arm

488,588‧‧‧Extension member

490,590‧‧‧Inner extension member

696,796‧‧‧Positive lock button

800‧‧‧ non-rotatable feature

899‧‧‧rail

992‧‧‧first extension member

994‧‧‧second extension member

A, C‧‧‧Vertical axis

B‧‧‧ center axis

D ₁ ‧‧‧Maximum distance

D ₂ , D ₃ , D ₄ ‧‧‧ total length

L ₁ , L ₂ ‧‧‧ length

W ₁ , W ₂ ‧‧‧ width

θ‧‧‧ angle

Schematic illustration

FIG. 1 is a front perspective view of a wrench according to an embodiment of the present invention.

FIG. 2 is a rear perspective view of the wrench of FIG. 1. FIG.

FIG. 3 is a partial front view of the wrench of FIG. 1. FIG.

FIG. 4 is a partial side view of the wrench of FIG. 1. FIG.

5 is a cross-sectional view of a thumb wheel of one of the wrenches of FIG. 1.

Figure 6 is a cross-sectional view taken along 6-6 of the wrench of Figure 3, including A hook jaw is enclosed in one of the first positions.

FIG. 7 is a cross-sectional view taken along 6-6 of the wrench of FIG. 3, including a hook and jaw clamp in a second position.

FIG. 8 is a perspective view of a part of a floating mechanism of the wrench of FIG. 1. FIG.

FIG. 9 is an enlarged view of an end cap taken along 8-8 of the wrench of FIG. 1.

FIG. 10 is a side view of the wrench of FIG. 1, including different extended grip lengths.

FIG. 11 is a perspective view of a wrench according to another embodiment of the present invention.

FIG. 12 is an exploded perspective view of the wrench of FIG. 10 including an insert.

Figure 13 is a partial cross-sectional view of a conventional tube and a removal cover.

14 is a side view of a wrench according to another embodiment of the present invention, including an extended grip in a storage position.

FIG. 15 is a side view of the wrench of FIG. 13 with the extended grip in an extended position.

16 is a side view of a wrench according to another embodiment of the present invention, including an extended grip in a storage position.

FIG. 17 is a side view of the wrench of FIG. 15 with the extended grip in an extended position.

18 is a rear view of the wrench of FIG. 16.

FIG. 19 is a view of a grip of a wrench according to another embodiment of the present invention Partial side view, including an extended grip in one of the storage positions.

FIG. 20 is a partial side view of the wrench grip of FIG. 18 with the extended grip in an extended position.

21 is a partial side view of a grip of a wrench according to another embodiment of the present invention, including an extended grip.

22 is a partial side view of a grip of a wrench according to another embodiment of the present invention, including an extended grip.

23 is a partial side view of a grip of a wrench according to another embodiment of the present invention, including an extended grip.

Figure 24 is a cross-sectional view of a non-rotatable feature of a wrench.

25 is a partial side view of a grip of a wrench according to another embodiment of the present invention.

Before explaining any embodiment of the present invention in detail, it should be understood that the application of the present invention is not limited to the details of the structure and configuration of components proposed in the following description or shown in the following drawings. The invention is capable of other embodiments and of being practiced or carried out in various ways. In addition, it should be understood that the terms and terminology used herein are for the purpose of description and should not be regarded as limiting.

Detailed description

FIG. 1 shows a wrench 10 according to an embodiment of the invention. The wrench 10 includes a grip 12 and a head 14. The grip 12 is an elongated cylindrical member having a proximal portion 16 and a distal portion 18, and the distal portion 18 is close to the head 14. In addition, the grip 12 and the head 14 are integrally formed as a single component. The grip 12 defines an inner hole 13 having an internal thread 15 (FIG. 6) and the internal threads 15 are close to the distal portion 18. The head 14 includes recesses 19 provided on opposite side surfaces of the head 14, and the recesses 19 define an amount of material that has been removed by the head 14. In other words, a first concave portion 19 is provided on a first side surface of the head portion 14, and a second concave portion 19 is provided on a second side surface of the head portion 14. The illustrated head 14 also includes a second recess 21 near one of the recesses 19. In other embodiments, the head 14 may include two second recesses 21 disposed on opposite sides of the head 14. The head 14 also includes a substantially flat surface 45, and the flat surface 45 can be used as a hammering surface disposed on a rear surface of the head 14. In detail, the wrench 10 can be used as a hammer to strike an object (for example, a work piece) as the flat surface 45, or the wrench 10 can be used as an object (for example, a hammer) to hit the flat surface 45. An anvil operation. In the illustrated embodiment, the grip 12 and the head 14 are formed of a metallic material (for example, ductile cast iron).

1 and 2, the wrench 10 includes a first or fixed jaw clamp 28 and a second or hook jaw clamp 30. In the illustrated embodiment, the fixed jaw clip 28 is detachably coupled to the head 14 through a pin 25 so that the fixed jaw clip 28 can be replaced when it becomes worn. In one embodiment, the pin 25 allows the fixed jaw clip 28 to pivot relative to the head 14. In other embodiments, the fixed jaw clip 28 is permanently fixed on the head 14. The fixed jaw clamp 28 and the hook-jaw clamp 30 each include a plurality of teeth 32, 34 that define contact areas 36 and 38, respectively. 3 and 6, the plurality of teeth 32 includes a recess 19 (for example, a first side surface of the head 14) to another recess (for example, a second side surface of the head 14) A width W ₁ and a length L ₁ extending parallel to the recesses 19 (eg, parallel to the first and second side surfaces). In the illustrated embodiment, the width W ₁ is approximately 0.9 inches and the length L ₁ is approximately 1.3 inches. In other embodiments, the width W ₁ may be about 0.7 inches to about 1.3 inches, and / or the length L ₁ may be about 1 inch to about 1.8 inches.

The hook jaw clip 30 can be moved relative to the fixed jaw clip 28 in the directions of arrows 40 and 42 to increase or decrease a distance 44 between the jaw clips 28 and 30 (ie, in the contact areas 36 Vertical distance from 38) to fit different sizes of work pieces (e.g. pipes, fittings, etc.). See FIGS. 3 and 6, such plurality of teeth 34 comprises, similar to the width W _1, a width W along one of these recesses 19 extending in a direction _2, and similar to the length L _1, parallel to these The recess 19 extends by a length L ₂ . In the illustrated embodiment, the width W ₂ is about 0.85 inches and less than the width W ₁ , and the length L ₂ is about 1.6 inches. In other embodiments, the width W _{1 of the} plurality of teeth 32 is smaller than the width W _{2 of the} teeth 34, and the length L ₂ may be about 1 inch to about 1.92 inches. In other embodiments, the widths W ₁ and W ₂ may be equal. In the illustrated embodiment, the hook and jaw clamp 30 includes a threaded portion 54 having a plurality of grooves 56 and defining a longitudinal axis A. The illustrated jaw clamp 30 also includes a mark 61 (FIG. 10) indicating the relative relative distance 44 between the jaws 28, 30.

Referring to FIG. 4, the fixed jaw clip 28 and the hook-jaw clip 30 are oriented so that the hook-jaw clip 30 extends beyond the fixed jaw clip 28. In detail, the contact area 38 of the hook jaw clip 30 extends perpendicular to a distance 31 of one of the widths W ₁ and W ₂ and passes through the contact area 36 of the fixed jaw clip 28. The distance 31 extends parallel to the recesses 19 (for example, the side surface of the head 14). In other words, the distance 31 of the rear surface of the head 14 defined by the flat surface 45 extends relatively. In the illustrated embodiment, the distance 31 may vary from about 1/8 inch to about 1/2 inch. The distance 31 can also be changed with wrenches of different sizes. For example, a 14-inch wrench may include a distance 31 different from an 18-inch wrench. In addition, the contact area 38 of the hook jaw clip 30 is oriented at an angle θ relative to the contact area 36 of the fixed jaw clip 28. When the contact areas 36, 38 are oriented at an angle θ, the fixed jaw clamp 28 and the hook jaw clamp 30 are preferably adapted to grasp a circular object (eg, a tube). In the illustrated embodiment, the angle θ is approximately 9 degrees. In other embodiments, the angle θ is greater than about 5 degrees and less than about 15 degrees. The angle θ can also be changed with wrenches of different sizes. For example, a 14-inch wrench may include an angle θ different from an 18-inch wrench.

The wrench 10 further includes an actuator or a thumb wheel 52 which is operable to change the distance 44 between the jaws 28 and 30 and the threaded portion of the hook jaw 30 54 engagement. In the illustrated embodiment, the thumb wheel 52 includes a plurality of vertically oriented grooves 60 substantially parallel to the grip 12. The grooves provide a non-slip surface for operating the thumb wheel 52. The thumb wheel 52 also includes a plurality of internal threads 58 that are engaged with the grooves 56 so that the hook jaw clip 30 follows the arrow relative to the fixed jaw clip 28 according to the rotation of the thumb wheel 52 Move in the direction of 40 or 42. The thumb wheel 52 is disposed in a recessed hole 62 to prevent the thumb wheel 52 from moving with the hook jaw 30 in the directions of arrows 40 and 42. The recessed hole 62 is formed by the head 14 and A plurality of flanges 64 projecting from the distal end portion 18 of the grip 12 are formed. The flanges 64 have a sturdy design to improve durability. Compared to a conventional wrench, a portion of the flanges 64 near the grip 12 includes additional material so that, if the wrench 10 is dropped, the impact of the flanges 64 is not broken. Bad. In addition, the flanges 64 generally define a curved portion having a radius 65 (FIG. 4). In the illustrated embodiment, the flanges 64 are positioned below the thumb wheel 52. In other embodiments, a portion of the flanges 64 may extend partially within the thumb wheel 52.

Referring to FIG. 5, the thumb wheel 52 is configured as a double-lead thumb wheel 52 (also referred to as a double-grain or double-threaded thumb wheel). The thread 58 of the thumb wheel 52 defines a thread distance 66 (hereinafter referred to as the "pitch") and a lead distance 68 (hereinafter referred to as the "lead"). The pitch 66 is an axial distance between adjacent apexes of the threads 58. The lead 68 is a linear distance that the hook jaw 30 advances (in the direction of the arrow 40 or 42) each time the thumb wheel 52 is fully rotated. A conventional threaded thumb wheel includes a single thread that spirally surrounds the thumb wheel. The conventional thumb wheel has a pitch 66 and a lead 68 that are equal; therefore, the conventional thumb wheel will advance the hook tool 30 by a linear distance equal to one of the pitch 66 each time it is fully rotated. In contrast, the thumb wheel 52 shown includes two separate threads 58a and 58b that are 180 degrees apart and spirally surround the thumb wheel 52. Therefore, for each rotation of the thumb wheel 52, the hook jaw clamp 30 advances twice the pitch 66 (ie, the lead 68 is twice the pitch 66), so only the comparison of the thumb wheel 52 is required. Rotate less to adjust the distance 44 between the jaws 28 and 30.

Referring to FIG. 6, a part of the threaded portion 54 of the hook jaw clip 30 is received in a hole 70 extending through the head 14. The hole 70 includes a front wall 72 and a rear wall 74 which are slightly opposite to each other and separated furthest from a distal end 76 of the hole 70. The hole 70 defines a central axis B substantially parallel to one of the grips 12.

Please continue to refer to FIG. 6. The wrench 10 includes a floating or biasing mechanism 78 that positions the threaded portion 54 of the hook jaw clamp 30 in the center of the hole 70 to define the hook jaw. One of the clips 30 is in a floating position. In other words, the floating mechanism 78 biases the threaded portion 54 and is aligned with the central axis B. In the illustrated embodiment, the floating mechanism 78 includes two coil springs 84 and an intermediate member 75, and the intermediate member 75 has a pair of longitudinally extending guide walls 86 and 88 connected by a web 90 (FIG. 8). In the embodiment shown, the guide wall 86 is longer than the guide wall 88. In addition, the guide wall 86 is close to the front wall 72 and the guide wall 88 is close to the rear wall 74. The guide walls 86 and 88 are disposed between the coil springs 84 and the hook jaw clamp 30. The coil springs 84 are placed in corresponding recesses 94 provided on the rear wall 74 and the front wall 72 and the recesses 94 are staggered from each other. In other words, the coil springs 84 are not concentric with each other. In the illustrated embodiment, a coil spring 84 is received in a recess 94 on the rear wall 74, and a coil spring 84 is received in a recess 94 on the front wall 72. In detail, the coil spring 84 connected to the front wall 72 is positioned closer to the distal end 76 of the hole 70 than the coil spring 84 connected to the rear wall 74 along the central axis B. In other embodiments, the coil spring 84 coupled to the rear wall 74 may be positioned closer to the distal end 76 of the hole 70 than the coil spring 84 coupled to the rear wall 72 along the central axis B. In other embodiments, there may be more than two coil springs 84. For example, two coil springs may be provided on one of the front and rear walls 72, 74, or two coil springs may be provided on both of the front and rear walls 72, 74. The coil springs 84 are deformable to allow one of the distal ends 96 of the hook jaw clamp 30 to extend approximately along the arrows 98 and 99 within a range restricted by the engagement between the hook jaw clamp 30 and the walls 72 and 74. Move in the direction.

In addition, the hook and jaw clip 30 includes a thumb release portion 97 on an end opposite the distal end 96 (FIG. 1). The thumb release portion 97 is substantially close to the threaded portion 54 and a flat surface of the grip 12. As described above, the hook jaw clamp 30 can be moved in the directions of the arrows 98 and 99 by the floating mechanism 78. In addition, the floating mechanism 78 can be operated by the thumb release portion 97. For example, applying a force to the grip 12 on the thumb release portion 97 causes the hook jaw clamp 30 to pivot away from the fixed jaw clamp 28 (in the direction of the arrow 99) to increase the distance 44.

Referring to FIGS. 1 and 9, an extension member or a grip 91 including an end cover 23 is received in the inner hole 13 to provide an increased length for the grip 12. The extension grip 91 is designed to have an external thread 93 (FIG. 6) so that the extension grip 91 is screwed into a threaded portion 15 (FIG. 6) in the inner hole 13. In addition, the threads of the extension grip 91 and the inner hole 13 are designed to have a standard national pipe thread taper (NPT). For example, the extension grip 91 includes a ¾ "NPT thread configuration. The standard NPT size of the inner hole 13 allows the operator to couple any extension member to the head 14 having a corresponding NPT size. In other embodiments, The inner hole 13 is designed to fit a different NPT thread configuration (eg, a ½ "diameter, a 5/8" diameter, etc.).

The length of the illustrated grip 91 can be varied to increase the leverage of the wrench 10. For example, FIG. 10 shows a two-length grip 91. In the illustrated embodiment, the total length including the shorter grip 91a of the end cap 23 is approximately 11.8 inches, and the total length including the longer grip 91b of the end cap 23 is approximately 17.1 inches Inch length. In addition, the shorter grip 91a includes a length larger than the grip 12. In other embodiments, the grips 91a, 91b may be any Length to provide the desired leverage of one of the wrenches 10.

The illustrated end cap 23 includes a first radial groove 29, and the first radial groove 29 is aligned with a second radial groove 27 formed in the handle 91. A ring member 35 is positioned in the radial grooves 27 and 29 so that the end cap 23 can rotate relative to the grip 91, but the end cap 23 cannot move axially relative to the grip 91 (along arrows 40, 42)). The ring member 35 is defined as a circular spring with a break point so that the ring member 35 extends less than 360 degrees. The ring member 35 has elasticity so as to be snapped into the first radial groove 29 and enlarged in the first radial groove 29 when the end cover 23 and the grip 91 are combined. In the embodiment, the ring member 35 is a metal.

In addition, the wrench 10 can be hung (eg, stored) using a hole 22 formed through the end cover 23, and the head 14- and the grip 91- can be rotated to tightly store and improve the wrench 10 storage.

During operation, the user can use the wrench 10 to rotate a work piece, such as a tube or an accessory. When an operator operates the wrench 10, the recesses 19, 21 provide better balance, ie, weight distribution, and reduce the total weight of the wrench 10. To position the wrench 10 around the work piece, the user rotates the thumb wheel 52 to adjust the distance 44 between the jaws 28 and 30. When the user rotates the thumb wheel 52, the engagement between the thread 58 of the thumb wheel 52 and the threaded portion 54 of the hook jaw clip 30 causes the hook jaw 30 to change according to the rotation direction of the thumb wheel 52. Move in the direction of arrow 40 or 42. Please refer to FIG. 10, _one adjusted to about 3.1 inches in one of the teeth 32, 34 between these maximum distance D. In other embodiments, the distance D ₁ may be changed according to the size of the wrench 10. Since the distance 44 between the jaws 28, 30 is slightly larger than the outer diameter of the work piece, the jaws 28 and 30 are easily assembled on the work piece because the jaws 28 and 30 are not tied to the work piece On the work piece. Then, the user further rotates the thumb wheel 52 to reduce the distance 44 between the jaws 28 and 30 until the contact areas 36 and 38 of the jaws 28 and 30 contact the work piece.

Referring to FIG. 6, the floating mechanism 78 keeps the hook and jaw clamp 30 in a central position between the walls 72 and 74, but allows the distal end 96 of the hook and jaw clamp 30 to move in the directions of arrows 98 and 99. The hook and jaw clamp 30 can thus be accurately positioned to engage the work piece, and when the grip 12 rotates, the hook and jaw clamp 30 is inclined in the direction of arrows 98 and 99 in the hole 70. In addition, the hook jaw clip 30 can be pivoted in the direction of the arrow 99 by applying a force to the thumb release portion 97. For example, an operator of the wrench 10 may apply a force to the thumb release portion 97 with their thumb to increase the distance 44 so that the wrench can be easily removed by a work piece.

In the illustrated embodiment, the wrench 10 may be configured as a multi-sized wrench. For example, the wrench 10 can be used without the extended grip 91 and the operator grasps the grip 12 between the thumb release portion 97 and the proximal end 16. Therefore, a total length D ₂ of the grip 12 of the grip 12 at the maximum distance D ₁ is about 13.2 inches. Therefore, a ratio between a width W _{1 of} the jaw clip 28 and the total length D ₂ is about 0.07, and a ratio between a width W _{2 of} the jaw clip 30 and the total length D ₂ is about 0.06. In other embodiments, the total length D ₂ may be changed by changing the maximum distance D ₁ and / or by changing the length of the grip 12. The operator can operate the grip 12 in applications requiring relatively low torque or leverage. Alternatively, the extension 91a may be coupled to handle 12 so that the handle 10 of the wrench, the overall length of one line is about 18.9 inches D _3. Therefore, a ratio between a width W _{1 of} the jaw clip 28 and the total length D ₃ is about 0.05, and a ratio between a width W _{2 of} the jaw clip 30 and the total length D ₃ is about 0.04. In addition, the extension 91b may be coupled to handle 12 so that the handle 10 of the wrench, the overall length of one line is about 24.2 inches D _4. Therefore, a ratio between a width W _{1 of} the jaw clip 28 and the total length D ₄ is approximately 0.04, and a ratio between a width W _{2 of} the jaw clip 30 and the total length D ₄ is approximately 0.03. In other embodiments, the distances D ₃ and D ₄ may vary according to the size of the wrench 10.

11 and 12 illustrate a wrench 110 according to another embodiment of the present invention. The wrench 110 is similar to the wrench 10; therefore, similar components have been given similar symbols plus 100 and only the differences between the wrenches 10 and 110 will be explained in detail. In addition, components or features described for only one or some of the embodiments described herein may be equally applied to any of the other embodiments described herein.

The wrench 110 includes a grip 112 and an inner hole 113 finally made of aluminum. However, an extension grip 191 is made of steel to provide extra strength against the torque applied to the extension grip 191 when the wrench 110 is operated. Therefore, due to the weaker aluminum material, the operator may peel off the internal thread of the inner hole 113 when the extension handle 191 is locked on the handle 112. Therefore, a sleeve 187 defining a hollow cylindrical member is inserted and fixed (eg, press-fit, adhered, etc.) in the inner hole 113. The sleeve 187 includes internal threads that can engage the external threads of the extension grip 191. The sleeve 187 is also made of steel to prevent possible injury to the internal threads of the sleeve 187.

Referring to FIG. 12, the wrench 110 further includes an auxiliary driver. 150. The auxiliary driver 150 has a first auxiliary driving surface 146 connected to a head 114 of the wrench 110 and a second auxiliary driving surface 148 connected to a hook jaw 130 of the wrench. The illustrated auxiliary driver 150 is shaped to fit two parallel surfaces of the cleaning cap 151, which is particularly suitable for rotating one of the tubes 153 (FIG. 13). In operation, a distance between the surfaces 146, 148 is adjusted by rotating a thumb wheel 152, and the surfaces 146, 148 receive opposite sides of a square protrusion 155 of the cover 151. The cover 151 is then rotated relative to the tube 153 using the wrench 10 to install or remove the cover 151.

14 and 15 show a wrench 210 according to another embodiment of the present invention. The wrench 210 is similar to the wrench 10; therefore, similar components have been given similar symbols plus 200 and only the differences between the wrenches 10 and 210 will be explained in detail. In addition, components or features described for only one or some of the embodiments described herein may be equally applied to any of the other embodiments described herein.

The wrench 210 includes an extension member 291 pivotally coupled to a grip 212 through a pin 268. In addition, the wrench 210 includes a recessed hole 267 for receiving the extension member 291 in the handle 212. The pin 268 is received in a hole 270 near a proximal portion 216. In a storage position (FIG. 14), the extension member 291 is placed approximately between the proximal portion 216 and a distal portion 218. In an extended position (FIG. 15), the extension member 291 extends beyond the proximal portion 216. The extension member 291 may include a variety of cross-sectional geometries (eg, square, circular, rectangular, etc.).

The extension member 291 of the grip 212 can be selectively pivoted between the storage position and the extended position to increase the leverage of the jaws 228, 230 The amount. In the extended position, the extension member 291 and the grip 212 form an overlapping area 276 so that the extension member 291 cannot move relative to the grip 212 in a direction defined by arrows 272, 274.

In addition, the wrench 210 includes a latch mechanism 278 to prevent pivotal movement of the extension member 291. The latch mechanism 278 includes a latch protrusion 280 provided on the handle 212 and a latch hole 282 provided on the extension member 291. The latching protrusion 280 and the latching hole 282 are disposed equidistant from the pin 268 so that the latching hole 282 engages the latching protrusion 280 to temporarily lock the extension member 291 in the storage position. In another embodiment, the latching protrusion 280 may be disposed on the extension member 291 and the latching hole 282 may be disposed on the grip 212.

16 to 18 show a wrench 310 according to another embodiment of the present invention. The wrench 310 is similar to the wrench 10; therefore, similar components have been given like symbols plus 300 and only the differences between the wrenches 10 and 310 will be explained in detail. In addition, components or features described for only one or some of the embodiments described herein may be equally applied to any of the other embodiments described herein.

The extension member 391 includes a hook and hole mechanism 378. The hook and hole mechanism 378 includes an arm portion 386, and the arm portion 386 extends on a top of a grip 312 in a storage position (FIG. 16) to temporarily lock the hook and hole mechanism 378 in the storage position. Specifically, the recessed hole 367 of the handle 312 receives the extension member 391 in the storage position. The illustrated extension member 391 is pivotable around a pin 368 to an extended position (FIG. 17). A rear view of the wrench 310 is shown in FIG. 18 and the extension member 391 is in the extended position. The hook with The hole mechanism 378 includes a cavity 384. When the extension member 391 is in the storage position, the cavity 384 can receive a side portion of the handle 312.

19 and 20 show a wrench 410 according to another embodiment of the present invention. The wrench 410 is similar to the wrench 10; therefore, similar components have been given like symbols plus 400 and only the differences between the wrenches 10 and 410 will be explained in detail. In addition, components or features described for only one or some of the embodiments described herein may be equally applied to any of the other embodiments described herein.

The extension member 491 includes an outer extension member 488 slidably received on an inner extension member 490. The inner extension member 490 is slidably stored on a grip 412. In the storage position (FIG. 19), the outer extension member 488 and the inner extension member 490 abut a head 414 of the wrench 410. To move the extension member 491 to an extended position (FIG. 20), the user slides the outer extension member 488 relative to the inner extension member 490, and the inner extension member 490 slides away from the head relative to the grip 412 414. In other embodiments, in order to move the extension member 491 from the storage position to an extended position, the user can only slide the outer extension member 488 relative to the inner extension member 490 and the grip 412. In another embodiment, in order to move the extension member 491 from the storage position to an extended position, the user can slide the outer extension member 488 and the inner extension member 490 relative to the handle 412 together.

FIG. 21 shows a wrench 510 according to another embodiment of the present invention. The wrench 510 is similar to the wrench 10; therefore, similar components have been given similar symbols plus 500 and only the differences between the wrenches 10 and 510 will be explained in detail. this In addition, components or features described with respect to only one or some of the embodiments described herein may be equally applied to any of the other embodiments described herein.

The illustrated wrench 510 includes an extension member 591 including an inner extension member 590 slidably received within an outer extension member 588 and the outer extension member 588 is slidably received within a grip 512. In the embodiment shown, the inner extension member 590 extends about 5 inches from the outer extension member 588. The outer extension member 588 is substantially hollow and the outer extension member 588 extends about 4 inches from the grip 512. In summary, the extension member 591 is extended by the grip 512 for about 9 inches in the extended position. In addition, the wrench 510 includes two overlapping regions 576. In the illustrated embodiment, the overlap area 576 between the grip 512 and the outer extension member 588 is approximately 2 inches and the overlap area 576 between the outer extension member 591 and the inner extension member 590 is approximately 1 inch. Inches. In other embodiments, the extension member 591 may include varying dimensions of the outer and inner extension members 588, 590 and the overlapping regions 576 to form a varying wrench 510 size.

FIG. 22 shows a wrench 610 according to another embodiment of the present invention. The wrench 610 is similar to the wrench 510; therefore, similar components have been given like symbols plus 100 and only the differences between the wrenches 510 and 610 will be explained in detail. In addition, components or features described for only one or some of the embodiments described herein may be equally applied to any of the other embodiments described herein.

The illustrated wrench 610 includes a latching mechanism 678 having a positive locking button 696 coupled to an extension member 691. The A positive lock button 696 projects outward from the extension member 691 and is biased by a spring. A cavity 698 is disposed on an inner surface of a grip 612 and accommodates the positive locking button 696 in an extended position. In another embodiment, the positive locking button 696 may be coupled to the grip 612 and the cavity 698 may be disposed on the extension member 691. In order to remove the extension member 691 by the grip 612, pressing the positive lock button 696 against the extension member 691 allows the positive lock button 696 to slide within the cavity 698.

FIG. 23 shows a wrench 710 according to another embodiment of the present invention. The wrench 710 is similar to the wrench 10; therefore, similar components have been given like symbols plus 700 and only the differences between the wrenches 10 and 710 will be explained in detail. In addition, components or features described for only one or some of the embodiments described herein may be equally applied to any of the other embodiments described herein.

The illustrated wrench 710 includes a latch mechanism 778. The grip 712 includes an inner hole 713 extending into the grip 712, and the inner hole 713 includes a cavity 798 disposed near a proximal portion 716 of the grip 712. The cavity 798 extends around an inner circumference of the inner hole 713 in a direction substantially perpendicular to a longitudinal axis C. An extended grip 791 includes a positive lock button 796, and the positive lock button 796 is inserted into the inner hole 713 so that the positive lock button 796 is received in the cavity 798. The extended grip 791 is rotated relative to the grip 712 to lock the positive locking button 796 into a portion of the cavity 798. Therefore, the extended grip 791 is fixed to the grip 712 in an extended position.

FIG. 24 shows a cross section of a non-rotatable feature 800, which is disposed in an inner hole 813 of a handle 812 and is applicable. 于 wrenches 410, 510, 610. More generally, the non-rotatable feature 800 can be used in a wrench that includes a sliding linear engagement between an extension member and a grip. In addition, the non-rotatable feature 800 includes guides 899, and the guides 899 guide linear movement between the two members (ie, the extension member and the grip or the inner extension member and the outer extension member), but prevent rotation between the two members .

FIG. 25 shows a wrench 910 according to another embodiment of the present invention. The wrench 910 is similar to the wrench 10; therefore, similar components have been given similar symbols plus 900 and only the differences between the wrenches 10 and 910 will be explained in detail. In addition, components or features described for only one or some of the embodiments described herein may be equally applied to any of the other embodiments described herein.

The illustrated wrench 910 includes an extension member 991, and the extension member 991 has a first extension member 992 and a second extension member 994. The first extension member 992 is pivotally coupled to a handle 912 through a pin 968, and the second extension member 994 is pivotally coupled to the first extension member 992 through a pin 968. In order to move the extension member 991 to a storage position (not shown), the second extension member 994 is rotated into the first extension member 992 and the first extension member 992 is rotated into the grip 912 such that the An extension member 991 is placed inside the grip 912. To move the extension member 991 to an extended position (not shown), the reverse procedure is performed. For example, turning the first extension member 992 out of the grip 912 and then turning the second extension member 994 out of the first extension member 992 makes the extension member 991 substantially parallel to the grip 912.

Although the invention has been described in detail with reference to certain preferred embodiments, most variations and modifications exist within the scope and spirit of one or most of the independent features of the invention as described.

10‧‧‧ wrench

12‧‧‧ Grip

14‧‧‧ Head

16‧‧‧ Proximal part

18‧‧‧Remote part

19‧‧‧ recess

21‧‧‧ the second recess

22‧‧‧hole

23‧‧‧ end cap

25‧‧‧pin

28‧‧‧ fixed jaw clamp

30‧‧‧Hook and Jaw Clip

32,34‧‧‧tooth

36,38‧‧‧Contact area

40,42‧‧‧arrow

45‧‧‧ flat surface

52‧‧‧ Thumb Wheel

54‧‧‧Thread

56‧‧‧Groove

60‧‧‧Vertical Orientation Groove

62‧‧‧ recess

64‧‧‧ flange

91‧‧‧Extended Grip

96‧‧‧ distal

97‧‧‧ Thumb release part

Claims (10)

A pipe wrench includes: a head including a first hole; a first jaw clamp coupled to the head; the first jaw clamp including a plurality of teeth defining a first contact area; a second Jaw clip partially extending through the hole of the head, the second jaw clip including a threaded portion and a plurality of teeth defining a second contact area, the second contact area being along a side parallel to the head One direction of the surface extends beyond the first contact area, and the second contact area defines a width; the actuator includes a thread that engages the threaded portion of the second jaw clamp such that rotation of the actuator causes the The second contact area of the second jaw clip moves relative to the first contact area of the first jaw clip; and an extension grip detachably coupled to the head, the extension grip and the second The jaw clamp defines a length; wherein a ratio of the width of the second contact area to the length is less than about 0.1. As in the tube wrench of claim 1, wherein the width of the second contact area is approximately 0.9 inches. The tube wrench of claim 2, wherein the length of the extended grip and the second jaw is approximately 19 inches. The tube wrench of claim 2, wherein the length of the extended grip and the second jaw is approximately 24 inches. As in the tube wrench of claim 1, wherein the second contact region extends beyond the first contact region by about 1/8 inch to about ½ inch. A pipe wrench includes: a head including a first hole; a first jaw clamp coupled to the head; the first jaw clamp including a plurality of teeth defining a first contact area; a second Jaw clamp partially extending through the hole in the head, the second jaw clamp including a threaded portion and a plurality of teeth defining a second contact area; an actuator including a second jaw clamp The thread engaged by the threaded portion causes the rotation of the actuator to move the second contact area of the second jaw clip relative to the first contact area of the first jaw clip; a grip, which includes a near An end portion and a distal portion, the distal portion being close to the head and the proximal portion opposite the distal portion, the proximal portion including an inner hole; and a first extension grip , Which is selectively coupled in the inner hole. The tube wrench of claim 6, wherein the grip defines a first length and the first extension grip defines a second length greater than the first length, and wherein the inner hole selectively receives a second extension grip While the second extended grip defines a third length greater than one of the second length. If the pipe wrench of claim 6, wherein the inner hole includes a thread and the first extension grip includes a thread portion, the thread portion can be engaged with the threads of the inner hole to form the first extension grip Detachably coupled to the head. The tube wrench of claim 6, wherein the grip is integrally formed with the head as a single component. The tube wrench of claim 6 further includes an end cap that is rotatably coupled to the first extension grip so that the end cap is axially fixed relative to the first extension grip.