CA2234834C - Adjustable wrench - Google Patents
Adjustable wrench Download PDFInfo
- Publication number
- CA2234834C CA2234834C CA002234834A CA2234834A CA2234834C CA 2234834 C CA2234834 C CA 2234834C CA 002234834 A CA002234834 A CA 002234834A CA 2234834 A CA2234834 A CA 2234834A CA 2234834 C CA2234834 C CA 2234834C
- Authority
- CA
- Canada
- Prior art keywords
- movable jaw
- section
- adjustable wrench
- pin
- wrench according
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/10—Spanners; Wrenches with adjustable jaws
- B25B13/28—Spanners; Wrenches with adjustable jaws the jaws being pivotally movable
- B25B13/30—Spanners; Wrenches with adjustable jaws the jaws being pivotally movable by screw or nut
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/10—Spanners; Wrenches with adjustable jaws
- B25B13/28—Spanners; Wrenches with adjustable jaws the jaws being pivotally movable
- B25B13/34—Arrangements for locking the jaws
Abstract
An adjustable wrench includes an elongated member including a first handle end and a second end, the second end including a fixed jaw and an engaging section formed thereon.
The adjustable wrench further includes a movable jaw having a clamping section formed on a first end thereof and a second end pivotally connected to the second end of the elongated member. An adjusting member is mounted between the second end of the elongated member and the movable jaw to urge the movable jaw to pivot relative to the fixed jaw. An elastic member has a first end attached to the adjusting member to frictionally retain the adjusting member in position and a second end securely received in one of the elongated member and the movable jaw.
The adjustable wrench further includes a movable jaw having a clamping section formed on a first end thereof and a second end pivotally connected to the second end of the elongated member. An adjusting member is mounted between the second end of the elongated member and the movable jaw to urge the movable jaw to pivot relative to the fixed jaw. An elastic member has a first end attached to the adjusting member to frictionally retain the adjusting member in position and a second end securely received in one of the elongated member and the movable jaw.
Description
t iii ADJUSTABLE WRENCH
Background of the Invention 8 1. Field of the Invention 9 The present invention relates to an adjustable wrench.
The present invention also relates to an adjustable wrench 11 with fine adjustment.
12 2. Description of the Related Art 13 A wide variety of wrenches, spanners, and pliers have 14 heretofore been disclosed. For example, U.S. Patent No.
3,916,735 to Evans discloses adjustable multiple purpose 16 ratcheting wrenches. Nevertheless, the fastener still tends 17 to have a loose contact with the ratcheting wrenches when a 18 force is applied to loosen or tighten the fastener. In 19 addition, the fastener cannot be speedily loosened or tightened. U.S. Patent No. 5,551,322 to Mikic et a1.
21 discloses a speed wrench for speedily loosening or tightening 22 fasteners. U.S. Patent No. 5,630,344 to Nammoto discloses a 23~ side-entry, ratcheted wrench assembly to conveniently and 24 effectively loosen or tighten fasteners disposed in a difficult to access or reach location. U.S. Patent No.
26 5,630,345 to Ciccotelli discloses a plier having a hinged jaw 1 piece which is pivotally attached to a support arm for 2 adjusti:~ng the hinged jaw piece parallel relative to the other 3 jaw, and the adjusting means is manually operated and is 4 self-locking. Nevertheless, the jaws of the tools disclosed in these patents cannot provide an adequate clamping to the 6 fastener between the jaws. More specifically, the corners of 7 the fastener will be damaged if too loose, and operation of 8 the tools is adversely affected if too tight.
9 'Therefore, there has been a long and unfulfilled need for an improved adjustable wrench which mitigates and/or 11 obviates the above problems.
12 Summary of the Invention 13 In accordance with a first aspect of the invention, an 14 adjustable wrench comprises an elongated member including a :15 first handle end and a second end, the second end including a :16 fixed jaw and an engaging section formed thereon. The :17 adjustable wrench further includes a movable jaw having a :18 clamping section formed on a first end thereof and a second :19 end pivotally connected to the second end of the elongated :20 member. An adjusting means is mounted between the second end 21 of the elongated member and the movable jaw to urge the 22 movable jaw to pivot relative to the fixed jaw. A retaining 23 means is provided to retain the adjusting means in position.
24 The ret<~ining means may :be an elastic means which has a first 25 end ati~ached to the adjusting means to fractionally retain 26 the adjusting means in position and a second end securely 1 received in one of the e:Longated member and the movable jaw.
2 7.n a preferred embodiment of the invention, the 3 adjusting means includes a screw rod with a wheel formed on a 4 mediate section thereo:E. A first pin is mounted in the movable jaw and includes a first transverse screw hole 6 through which a first end of the screw rod extends. A second 7 pin is mounted in the engaging section and includes a second 8 transvex-se screw hole through which a second end of the screw 9 rod extends. Preferably, the wheel includes a plurality of ~_0 alternat:ely disposed longitudinal ribs and longitudinal 7_1 grooves, and the first end of the elastic means is received 7_2 in one of the longitudinal grooves.
~_3 7.n an embodiment of the invention, the movable jaw 7_4 include:> a compartment dE=fined therein, and the elastic means 7_5 is a hollow elastic tubf=_ having a first end received in one 7_6 of the longitudinal grooves and a second end securely 7.7 received in the compartment.
7_8 I:n an alternate embodiment of the invention, the 7_9 elongated member includes a compartment defined therein. The 20 elastic means includes a rod having a first end and a second a1 end securely received :in the compartment, and an elastic 2.2 member is received in the compartment to bias the rod to 23 engage with one of the longitudinal groove.
a?4 ~ The engaging section of the elongated member may 2.5 include a pair of spaced lugs having aligned holes defined 26 therein for receiving the second pin.
1 '.Che second end of the movable jaw may include a pair 2 of spaced wall members, in which the wall members include 3 first aligned holes defined in a first section thereof for 4 receiving a third pin and second aligned holes defined in a second section thereof for receiving the first pin. A
6 connecting section is formed between the fixed jaw and the 7 engaging section, and the connecting section includes a 8 through hole through which the third pin extends.
9 F?referably, the clamping section of the movable jaw is .LO a hook, and the fixed jaw includes a hooked clamping section .L1 to cooperate with the hook of the movable jaw to speedily .L2 clamp a fastener therebetween when applied to the fastener.
_L3 7.n accordance with a second aspect of the invention, .L4 an adju:~table wrench comprises an elongated member including _~5 a first handle end and a second end, the second end including _~~6 a fixed jaw with a first clamping section formed thereon, a ..7 movable jaw having a second clamping section formed on a ~_8 first end thereof and a second end pivotally connected to the 7_9 second end of the elongated member. The first clamping 2.0 section and the second clamping section may together speedily a1 clamp a fastener therebet:ween when applied to a fastener.
22 I:n accordance with a third aspect of the invention, an 23 adjustable wrench comprises an elongated member including a ~!4 first handle end and a second end. The second end includes a 25 fixed jaw and an engaging section formed thereon, the fixed a6 jaw having a first clamping section. A movable jaw has a 1 second clamping section formed on a first end thereof and a 2 second end pivotally connected to the second end of the 3 elongated member. An adjusting means is mounted between the 4 second end of the elongated member and the movable jaw to urge the movable jaw to pivot relative to the fixed jaw. A
6 fine adjusting means is provided for actuating the adjusting 7 means to urge the second clamping section of the movable jaw 8 to move slightly away from the first clamping section of the 9 fixed jaw. A retaining means is provided for retaining the 1J adjusting means in position.
.ll .(n a preferred embodiment of the invention, the .L2 adjusting means includes a screw rod having a first end and a .l3 second end. The screw rod includes a wheel formed on a _(4 mediate section thereof, and the movable jaw includes a first pin mounted therein. The first pin has a first transverse '_.6 screw hole through which the first end of the screw rod 7_7 extends. The engaging section includes a second pin mounted 18 therein, and the second pin includes a second transverse ~_9 screw hole through which the second end of the screw rod extends. The includes a plurality of alternatively disposed 2.1 longitudinal ribs and longitudinal grooves.
a!2 The fine adjusting means includes a hollow cylindrical a!3 member and a catch member. The hollow cylindrical member a4 includes an eccentric longitudinal hole for receiving the second pin and a periphery, and the catch member includes a a6 first end secured to the periphery of the hollow cylindrical 1 member to move therewith and a second end for releasably 2 engaging with the wheel.
3 The periphery of the hollow cylindrical member 4 includes a first arcuate slot defined therein and a second arcuate slot defined therein and spaced from the first 6 arcuate slot. Each of the first arcuate slot and the second 7 arcuate slot includes a first end edge and a second end edge.
Background of the Invention 8 1. Field of the Invention 9 The present invention relates to an adjustable wrench.
The present invention also relates to an adjustable wrench 11 with fine adjustment.
12 2. Description of the Related Art 13 A wide variety of wrenches, spanners, and pliers have 14 heretofore been disclosed. For example, U.S. Patent No.
3,916,735 to Evans discloses adjustable multiple purpose 16 ratcheting wrenches. Nevertheless, the fastener still tends 17 to have a loose contact with the ratcheting wrenches when a 18 force is applied to loosen or tighten the fastener. In 19 addition, the fastener cannot be speedily loosened or tightened. U.S. Patent No. 5,551,322 to Mikic et a1.
21 discloses a speed wrench for speedily loosening or tightening 22 fasteners. U.S. Patent No. 5,630,344 to Nammoto discloses a 23~ side-entry, ratcheted wrench assembly to conveniently and 24 effectively loosen or tighten fasteners disposed in a difficult to access or reach location. U.S. Patent No.
26 5,630,345 to Ciccotelli discloses a plier having a hinged jaw 1 piece which is pivotally attached to a support arm for 2 adjusti:~ng the hinged jaw piece parallel relative to the other 3 jaw, and the adjusting means is manually operated and is 4 self-locking. Nevertheless, the jaws of the tools disclosed in these patents cannot provide an adequate clamping to the 6 fastener between the jaws. More specifically, the corners of 7 the fastener will be damaged if too loose, and operation of 8 the tools is adversely affected if too tight.
9 'Therefore, there has been a long and unfulfilled need for an improved adjustable wrench which mitigates and/or 11 obviates the above problems.
12 Summary of the Invention 13 In accordance with a first aspect of the invention, an 14 adjustable wrench comprises an elongated member including a :15 first handle end and a second end, the second end including a :16 fixed jaw and an engaging section formed thereon. The :17 adjustable wrench further includes a movable jaw having a :18 clamping section formed on a first end thereof and a second :19 end pivotally connected to the second end of the elongated :20 member. An adjusting means is mounted between the second end 21 of the elongated member and the movable jaw to urge the 22 movable jaw to pivot relative to the fixed jaw. A retaining 23 means is provided to retain the adjusting means in position.
24 The ret<~ining means may :be an elastic means which has a first 25 end ati~ached to the adjusting means to fractionally retain 26 the adjusting means in position and a second end securely 1 received in one of the e:Longated member and the movable jaw.
2 7.n a preferred embodiment of the invention, the 3 adjusting means includes a screw rod with a wheel formed on a 4 mediate section thereo:E. A first pin is mounted in the movable jaw and includes a first transverse screw hole 6 through which a first end of the screw rod extends. A second 7 pin is mounted in the engaging section and includes a second 8 transvex-se screw hole through which a second end of the screw 9 rod extends. Preferably, the wheel includes a plurality of ~_0 alternat:ely disposed longitudinal ribs and longitudinal 7_1 grooves, and the first end of the elastic means is received 7_2 in one of the longitudinal grooves.
~_3 7.n an embodiment of the invention, the movable jaw 7_4 include:> a compartment dE=fined therein, and the elastic means 7_5 is a hollow elastic tubf=_ having a first end received in one 7_6 of the longitudinal grooves and a second end securely 7.7 received in the compartment.
7_8 I:n an alternate embodiment of the invention, the 7_9 elongated member includes a compartment defined therein. The 20 elastic means includes a rod having a first end and a second a1 end securely received :in the compartment, and an elastic 2.2 member is received in the compartment to bias the rod to 23 engage with one of the longitudinal groove.
a?4 ~ The engaging section of the elongated member may 2.5 include a pair of spaced lugs having aligned holes defined 26 therein for receiving the second pin.
1 '.Che second end of the movable jaw may include a pair 2 of spaced wall members, in which the wall members include 3 first aligned holes defined in a first section thereof for 4 receiving a third pin and second aligned holes defined in a second section thereof for receiving the first pin. A
6 connecting section is formed between the fixed jaw and the 7 engaging section, and the connecting section includes a 8 through hole through which the third pin extends.
9 F?referably, the clamping section of the movable jaw is .LO a hook, and the fixed jaw includes a hooked clamping section .L1 to cooperate with the hook of the movable jaw to speedily .L2 clamp a fastener therebetween when applied to the fastener.
_L3 7.n accordance with a second aspect of the invention, .L4 an adju:~table wrench comprises an elongated member including _~5 a first handle end and a second end, the second end including _~~6 a fixed jaw with a first clamping section formed thereon, a ..7 movable jaw having a second clamping section formed on a ~_8 first end thereof and a second end pivotally connected to the 7_9 second end of the elongated member. The first clamping 2.0 section and the second clamping section may together speedily a1 clamp a fastener therebet:ween when applied to a fastener.
22 I:n accordance with a third aspect of the invention, an 23 adjustable wrench comprises an elongated member including a ~!4 first handle end and a second end. The second end includes a 25 fixed jaw and an engaging section formed thereon, the fixed a6 jaw having a first clamping section. A movable jaw has a 1 second clamping section formed on a first end thereof and a 2 second end pivotally connected to the second end of the 3 elongated member. An adjusting means is mounted between the 4 second end of the elongated member and the movable jaw to urge the movable jaw to pivot relative to the fixed jaw. A
6 fine adjusting means is provided for actuating the adjusting 7 means to urge the second clamping section of the movable jaw 8 to move slightly away from the first clamping section of the 9 fixed jaw. A retaining means is provided for retaining the 1J adjusting means in position.
.ll .(n a preferred embodiment of the invention, the .L2 adjusting means includes a screw rod having a first end and a .l3 second end. The screw rod includes a wheel formed on a _(4 mediate section thereof, and the movable jaw includes a first pin mounted therein. The first pin has a first transverse '_.6 screw hole through which the first end of the screw rod 7_7 extends. The engaging section includes a second pin mounted 18 therein, and the second pin includes a second transverse ~_9 screw hole through which the second end of the screw rod extends. The includes a plurality of alternatively disposed 2.1 longitudinal ribs and longitudinal grooves.
a!2 The fine adjusting means includes a hollow cylindrical a!3 member and a catch member. The hollow cylindrical member a4 includes an eccentric longitudinal hole for receiving the second pin and a periphery, and the catch member includes a a6 first end secured to the periphery of the hollow cylindrical 1 member to move therewith and a second end for releasably 2 engaging with the wheel.
3 The periphery of the hollow cylindrical member 4 includes a first arcuate slot defined therein and a second arcuate slot defined therein and spaced from the first 6 arcuate slot. Each of the first arcuate slot and the second 7 arcuate slot includes a first end edge and a second end edge.
8 The first end of the catch member includes an engaging 9 surface having two hooked portions respectively formed on two ~_0 ends thereof for securely engaging with the first end edges 7.1 respectively of the first arcuate slot and the second arcuate ~_2 slot .
~_3 The engaging section of the elongated member includes 7.4 a pair of spaced lugs having aligned holes defined therein 7_5 for receiving the second pin, and the spaced lugs includes a 7.6 space defined therebetween. The second end of the elongated member includes a compartment defined therein and 7.8 communicated with the space between the spaced lugs. The I_9 retaining means includes a ball and a spring received in the 2.0 compartment. The spring biases the ball to engage with one of 21 the second end edges respectively of the first actuate slot 2,2 and the second actuate slot.
~:3 The ball engages the second end edge of the second ~4 actuate slot before fine adjustment of the movable jaw while a5 the second end of the catch member disengages from the ~6 adjusting means. In addition, the second end of the catch 1 member engages with the adjusting means to cause the ball to 2 engage with the second end edge of the first arcuate slot to 3 thereby achieve fine adjustment of the movable jaw.
4 '.Ihe second end of the movable jaw includes a pair of spaced wall members, wherein the wall members include first 6 aligned holes defined in a first section thereof for 7 receiving a third pin and second aligned holes defined in a 8 second section thereof for receiving the first pin. A
9 connecting section is formed between the fixed jaw and the :LO engaging section, wherein the connecting section includes a :L1 through hole through which the third pin extends.
:L2 Other objects, advantages, and novel features of the :L3 invention will become more apparent from the following :L4 detailed description when taken in conjunction with the :L5 accompanying drawings.
:L6 Brief Description of the Drawings :L7 Fig. 1 is an exploded perspective view of a first :L8 embodiment of an adjustable wrench in accordance with the :L9 present invention;
20 Fig. 2 is a perspective view of the adjustable wrench :?1 in Fig. 1;
:?2 Fig. 3 is a top view, at an enlarged scale, showing :?3 the details of a head portion of the adjustable wrench in :?4 Fig. 2 which is applied to clamp a large bolt;
:?5 Fig. 4 is a view similar to Fig. 3, illustrating a <?6 modified embodiment of the adjustable wrench in accordance 1 with the present invention;
2 Fig. 5 is a view similar to Fig. 3, in which the 3 adjustable wrench is adjusted to clamp a small bolt;
4 Figs. 6 to 9 are schematic top views illustrating operation of the adjustable wrench;
6 Fig. 10 is a schematic view illustrating application 7 of the adjustable wrench in accordance with the present 8 invention;
9 Fig. 11 is a perspective view of a second embodiment 7.0 of the adjustable wrench in accordance with the present 1.1 invention;
12 Fig. 12 is an exploded perspective view of the 1.3 adjustable wrench in Fig. 11;
1.4 Figs. 13 and 14 are enlarged fragmentary sectional 1.5 views showing fine adjustment of the adjustable wrench in 1.6 Fig. 11; and 1.7 Fig. 15 is a schematic view illustrating application 1.8 of the adjustable wrench in Fig. 11.
1.9 Description of the Preferred Embodiments 20 Referring to the drawings and initially to Figs. 1 and 21 2, a first embodiment of an adjustable wrench in accordance 22 with the present invention generally includes an elongated 23 member 10 having a first handle end 11 and a second end on 24 which a fixed jaw 14 is formed. The fixed jaw 14 includes a 2.5 clamping section 141 which will be described later. Also 2.6 formed on the second end of the elongated member 10 is an 1 engaging section 12 having a pair of lugs 123 formed thereon.
2 The lugs 123 include a space 121 defined therebetween and 3 aligned holes 122 defined therein. A recessed connecting 4 section 13 is formed between the engaging section 12 and the fixed jaw 14. The recessed connecting section 13 includes a 6 recess 131 defined in each of two sides thereof and thus has 7 a thickness smaller then that of the elongated member 10. The 8 recessed connecting section 13 further includes a transverse 9 hole 1311 defined therein.
.LO The adjustable wrench further includes a movable jaw 11 20 having a first end on which a clamping section 21 is .L2 formed. The movable jaw 20 further includes a second end .L3 including a pair of spaced wall members 27 which, in turn, 14 define a space 22 therebetween. The wall members 27 include =_5 aligned holes 221 defined in a first section end thereof for ~6 receiving a pin 23 therein and aligned holes 222 defined in a 7_'7 second section thereof for receiving a pin 24 therein.
7_8 The adjustable wrench further includes an adjusting J_9 means 30 which, in turn, includes a screw rod 32 with a wheel 20 31 integrally formed on a mediate section thereof. The wheel 21 31 includes a plurality of alternately disposed longitudinal 22 ribs 311 and grooves 312. The adjustable wrench further 23 includes an elastic means. In an embodiment of the invention, 24 the elastic means 40 has a first end 41 and a second end 42 2.5 which will be described later.
26 In assembly, still referring to Figs. 1 and 2 and 1 further to Fig. 3, the second end 42 of the elastic member 40 2 is inserted into a compartment 15 (Fig. 3) defined in the 3 movable jaw 20. A pin 25 having a transverse screw hole 251 4 is mounted in the holes 122 while another pin 24 having a transverse screw hole 241 is mounted in the holes 222. Then, 6 two ends of the screw rod 31 of the adjusting means 30 are 7 respectively threadedly engaged with the transverse screw 8 holes 251 and 241. Thereafter, the holes 221 of the movable 9 jaw 20 are aligned with the hole 1311 of the recessed :LO connecting section 13, and the pin 23 is inserted into the .L1 holes 221 and 1311, thereby allowing pivotal movement of the .12 movable jaw 20 relative to the fixed jaw 14. It is .L3 appreciated that the recessed connecting section 13 is 14 received in the space 2-2 of the movable jaw 20, and the wall .L5 members 27 are respectively located on both sides of the .L6 recessed connecting section 13. As shown in Fig. 3, the first 17 end 41 of the elastic means 40 is extended into one of the :~8 longitudinal grooves 312 of the wheel 31 such that the 19 movable jaw 20 is retained in a certain angular relationship 20 with the fixed jaw 14 unless a relatively large force is 21 applied to rotate the wheel 31 to overcome the force of the 2.2 elastic means 40 and to urge the first end 41 of the elastic 23 means 40 to engage with another longitudinal groove 312. It 24 is appreciated that when the movable jaw 20 is adjusted to 25 completely clamp a fastener, e.g., a bolt, the wheel 31 may 26 be rotated in a reverse direction such that the first end 41 1 of the elastic means 40 passes through three of the 2 longitudinal ribs 311 at which position the movable jaw 20 3 together with the fixed jaw 14 may securely, adequately clamp 4 the bolt in position, i.e., neither too tight nor too loose.
It is appreciated that the clamping sections 21 and 141 may 6 be hooks which may assist in speedy clamping of the fastener.
7 In addition, in an alternative embodiment of the invention, 8 the clamping sections 21 and 141 can be used to speedily 9 clamp the fastener without provision of the adjusting means 30.
~:1 Fig. 4 illustrates an alternate embodiment of the ~_2 invention, in which the elastic means 40 is replaced by a rod __3 50 having a first end received in a compartment 15' defined ~_4 in the elongated member 10 and a second end received in one of the longitudinal grooves 312, and an elastic member 60 is ~_6 mounted in the compartment 15' to bias the rod 50 upwardly to 7_7 engage with one of the longitudinal grooves 312.
18 Referring to Fig. 5, the wheel 31 may be rotated so 19 as to urge the movable jaw 20 to pivot relative to the pin 23, thereby changing a distance between the clamping section 21 21 of the movable jaw 20 and the clamping section 141 of the 22 fixed jaw 14. Thus, the adjustable wrench in accordance with 23 the present invention may be used to clamp fasteners of 24 various sizes, as shown in Fig. 10.
In operation, referring to Fig. 6, the user may rotate 26 the elongated member 10 in a direction (e. g., clockwise) 1 through an angle to tighten or loosen the bolt (a small one 2 in this embodiment) which has been securely clamped between 3 the fixed jaw 14 and the movable jaw 20. Then, if the 4 elongated member 10 is stopped by an obstacle during operation, the user may rotate the elongated member 10 in a 6 reverse direction (e.g., counterclockwise, see Fig. 7) 7 without the need of disengaging the wrench from the bolt, in 8 which the clamping section 141 leaves corner "4" and moves 9 toward corner "3", while the clamping section 21 leaves :LO corner "1" and moves toward corner "0" to a position shown in :L1 Fig. 8, where the user may again operate the elongated member :L2 10 in the clockwise direction, as shown in Fig. 9. It is :L3 appreciated that a gap 70 (Fig. 3) is defined between the :L4 bolt and the fixed jaw 20 which allows convenient reverse :L5 rotational movement of the wrench without the need of :L6 disengaging the wrench from the bolt. In this embodiment, the :17 wrench is rotated in the reverse direction through 60 :LS degrees. Nevertheless, further reverse rotational movement :19 (e.g., 120 degrees or even more) can be done according to the 20 need.
21 According to the above description, it is appreciated 22 that the wrench of the present invention can be quickly, 23 easily adjusted to securely clamp the fastener by means of 24 rotating the wheel 30, and the structure and assembly are 25 simple and thus is inexpensive in cost. In addition, the 26 elastic means 40, 50 may securely retain the movable jaw 20 1 in position. Furthermore, the reverse rotation of the wheel 2 30 which makes the first end 41 of the elastic means 40 to 3 pass through three of the longitudinal ribs 311 which allows 4 the wrench to reliably clamp the fastener between the fixed jaw 14 and the movable jaw 20, which can be deemed as micro-6 adjustment of the wrench. Moreover, the head portion, i.e., 7 the fixed jaw 14/movable jaw 20 is relatively small and thus 8 can be used in a relatively small space. Further, the 9 clamping sections 21 and 141 allow speedy clamping of the ~'_0 fastener.
7_1 Referring now to Figs. 11 and 12, a second embodiment 12 of an adjustable wrench in accordance with the present 13 invention generally includes an elongated member 10 having a 7_4 first handle end 11 and a second end on which a fixed jaw 14 i5 is formed. The fixed jaw 14 includes a first clamping section ~_6 14 in the form of a hook. Also formed on the second end of 17 the elongated member 10 is an engaging section 12 having a 18 pair of lugs 123 formed thereon. The lugs 123 include a space 19 121 defined therebetween and aligned holes 122 defined 20 therein. A recessed connecting section 13 is formed between 21 the engaging section 12 and the fixed jaw 14. The recessed 22 connecting section 13 includes a recess 131 defined in each 2.3 of two sides thereof and thus have a thickness smaller than 24 that of the elongated member 10. The recessed connecting 25 section 13 further includes a hole 1311 defined therein.
26 The adjustable wrench further includes a movable jaw 1 20 having a first end on which a second clamping section 21 2 (also in the form of a hook) is formed. The movable jaw 20 3 further includes a second end including a pair of spaced wall 4 members 27 which, in turn, define a space 22 therebetween.
The wall members 27 include aligned holes 221 defined in a 6 first section thereof for receiving a pin 23 therein and 7 aligned holes 222 defined in a second section thereof for 8 receiving a pin 24 having a transverse screw hole 241 9 therein. The movable jaw 20 further includes an engaging face 7_0 26 defined adjacent to the second clamping section 21 to 11 provide a close contact with the fastener to be tightened or 7_2 loosened.
7_3 The adjustable wrench further includes an adjusting 7_4 means 30, which, in turn, includes a screw rod 32 with a wheel 31 integrally formed on a mediate section thereof. The 16 wheel 31 includes a plurality of alternately disposed 7_7 longitudinal ribs 311 and grooves 312. The adjustable wrench 7_8 further includes a spring 124 and a ball 126 which are 19 received in a compartment 125 (Fig. 13) defined in the second end of the elongated member 10 and communicated with the 21 space 121 between the lugs 123.
22 A hollow cylindrical member 28 is pivotally received 23 in the aligned holes 122 and includes an eccentric 24 longitudinal hole 284 (Fig. 11) defined therein for pivotally receiving a pin 25 having a transverse screw hole 251. The 26 hollow cylindrical member 28 includes two spaced arcuate 1 slots 281, 282 defined in a periphery thereof, each arcuate 2 slot 281, 282 having two end edges 281a, 281b; 282a, 282b, 3 respectively. In addition, referring to Fig. 13, a catch 4 member 29 is secured to the hollow cylindrical member 28 by a screw 294. The catch member 29 includes a first end having an 6 engaging surface 291 formed thereon and a second end having 7 an engaging tooth 295 formed thereon. The engaging surface 8 291 includes two hooked portions 292, 293 respectively formed 9 on two ends thereof such that the catch member 29 can be 7_0 securely attached to the end edges 281a and 282a respectively 7_1 of the arcuate slots 281 and 282, best shown in Fig. 13.
7_2 In assembly, still referring to Figs. 11 to 13, the 7_3 pin 25 is inserted into the hollow cylindrical member 28 7_4 which, in turn, is inserted into the aligned holes 122. The catch member 29 is then secured to the hollow cylindrical 16 member 28 in which the two hooked ends 292 and 293 of the 17 first end of the catch member 29 is engaged with the end 18 edges 281a and 282 respectively of the arcuate slots 281 and 7_9 282 to move therewith, best shown in Fig. 13. The two ends of the screw rod 31 are respectively threadedly engaged with 21 transverse screw holes 251 and 241 defined in the pins 25 and 22 24, respectively.
23 Thereafter, the holes 221 of the movable jaw 20 are 24 aligned with the hole 1311 of the recessed connecting section 13, and the pin 23 is inserted into the holes 221 and 1311, 26 thereby allowing pivotal movement of the movable jaw 20 1 relative to the fixed jaw 14. It is appreciated that the 2 recessed connecting section 13 is received in the space 22 of 3 the movable jaw 20, and the wall members 27 are respectively 4 located on both sides of the recessed connecting section 13.
As shown in Fig. 13, the spring 124 biases the ball 123 to 6 engage with one of the end edges 281b and 282b, which will be 7 described later.
g Fig. 15 illustrates application of the second 9 embodiment of the adjustable wrench of the present invention to clamp fasteners of various sizes, wherein the required 11 adjustment thereof is to merely rotate the wheel 31 which 12 causes movement of the pins 25 and 24 to thereby urge the 7_3 movable jaw 20 to move relative to the fixed jaw 14 to 14 securely hold the fastener with the engaging face 26 as well as the clamping sections 21 and 141.
16 When in use, before tightly clamping the fastener, ~7 e.g., a bolt (Fig. 15), the catch member 29 is pushed 18 upwardly to a status shown in Fig. 13, and the ball 126 19 engages with the end edge 282b of the arcuate slot 282. The '?0 user may adjust position of the movable jaw 20 to tightly 21 clamp the fastener (Fig. 15). As the pin 25 is received in 22 the eccentric hole 284 of the hollow cylindrical member 28, a 23 gap "L" (Fig. 13) is generated between the wheel 31 and the 24 engaging section 12. However, it is noted that the fastener '?5 cannot be speedily rotated for tightening or loosening under 26 this status without further fine adjustment. At this time, 1 the user may press the second end of the catch member 29 2 toward the wheel 31 to a status shown in Fig. 14, wherein the 3 engaging tooth 275 securely engages with the wheel 31. The 4 ball 126 disengages from the end edge 282b, slides through the periphery of the hollow cylindrical member 28, and then 6 engages with another end edge 281b. As a result, the hollow 7 cylindrical member 28 carries the screw rod 32 to the left 8 such that the gap "L" between the wheel 31 and the engaging 9 section 12 is shortened or even disappears, meanwhile, the movable jaw 20 is slightly moved away from the fastener such 11 that a tolerance clearance therebetween is adjusted allow 12 speedy rotation of the fastener for tightening or loosening.
7_3 More specifically, the catch member 29 and the cylindrical 14 member 28 act as a fine adjusting means for actuating the adjusting means 30 to urge the second clamping section 21 of 16 the movable jaw 20 to move slightly away from the first 17 clamping section 141 of the fixed jaw 14. It is appreciated 18 that the spring 124 and the ball 126 provide a positioning 7_9 effect for the movable jaw 20 to securely clamp the fastener after the fine adjustment is completed.
21 According to the above description, it is appreciated 22 that the adjustable wrench in accordance with the present 23 invention may speedily clamp fasteners of different sizes, 24 and after ordinary speedy adjustment of the distance between the clamping sections 141 and 21, the catch member 27 is 26 pressed to accomplish the fine adjustment which provides a 1 positioning effect between the fastener and the adjustable 2 wrench under the action of the spring 124 and the ball 123 3 and which allows speedy tightening or loosening of the 4 fastener (i.e., the user does not have to slowly adjust the clearance for speedily rotating the fastener). Again, the 6 clamping sections 21 and 141 allow speedy clamping of the 7 fastener.
8 Although the invention has been explained in relation 9 to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made 11 without departing from the spirit and scope of the invention 12 as hereinafter claimed.
~_3 The engaging section of the elongated member includes 7.4 a pair of spaced lugs having aligned holes defined therein 7_5 for receiving the second pin, and the spaced lugs includes a 7.6 space defined therebetween. The second end of the elongated member includes a compartment defined therein and 7.8 communicated with the space between the spaced lugs. The I_9 retaining means includes a ball and a spring received in the 2.0 compartment. The spring biases the ball to engage with one of 21 the second end edges respectively of the first actuate slot 2,2 and the second actuate slot.
~:3 The ball engages the second end edge of the second ~4 actuate slot before fine adjustment of the movable jaw while a5 the second end of the catch member disengages from the ~6 adjusting means. In addition, the second end of the catch 1 member engages with the adjusting means to cause the ball to 2 engage with the second end edge of the first arcuate slot to 3 thereby achieve fine adjustment of the movable jaw.
4 '.Ihe second end of the movable jaw includes a pair of spaced wall members, wherein the wall members include first 6 aligned holes defined in a first section thereof for 7 receiving a third pin and second aligned holes defined in a 8 second section thereof for receiving the first pin. A
9 connecting section is formed between the fixed jaw and the :LO engaging section, wherein the connecting section includes a :L1 through hole through which the third pin extends.
:L2 Other objects, advantages, and novel features of the :L3 invention will become more apparent from the following :L4 detailed description when taken in conjunction with the :L5 accompanying drawings.
:L6 Brief Description of the Drawings :L7 Fig. 1 is an exploded perspective view of a first :L8 embodiment of an adjustable wrench in accordance with the :L9 present invention;
20 Fig. 2 is a perspective view of the adjustable wrench :?1 in Fig. 1;
:?2 Fig. 3 is a top view, at an enlarged scale, showing :?3 the details of a head portion of the adjustable wrench in :?4 Fig. 2 which is applied to clamp a large bolt;
:?5 Fig. 4 is a view similar to Fig. 3, illustrating a <?6 modified embodiment of the adjustable wrench in accordance 1 with the present invention;
2 Fig. 5 is a view similar to Fig. 3, in which the 3 adjustable wrench is adjusted to clamp a small bolt;
4 Figs. 6 to 9 are schematic top views illustrating operation of the adjustable wrench;
6 Fig. 10 is a schematic view illustrating application 7 of the adjustable wrench in accordance with the present 8 invention;
9 Fig. 11 is a perspective view of a second embodiment 7.0 of the adjustable wrench in accordance with the present 1.1 invention;
12 Fig. 12 is an exploded perspective view of the 1.3 adjustable wrench in Fig. 11;
1.4 Figs. 13 and 14 are enlarged fragmentary sectional 1.5 views showing fine adjustment of the adjustable wrench in 1.6 Fig. 11; and 1.7 Fig. 15 is a schematic view illustrating application 1.8 of the adjustable wrench in Fig. 11.
1.9 Description of the Preferred Embodiments 20 Referring to the drawings and initially to Figs. 1 and 21 2, a first embodiment of an adjustable wrench in accordance 22 with the present invention generally includes an elongated 23 member 10 having a first handle end 11 and a second end on 24 which a fixed jaw 14 is formed. The fixed jaw 14 includes a 2.5 clamping section 141 which will be described later. Also 2.6 formed on the second end of the elongated member 10 is an 1 engaging section 12 having a pair of lugs 123 formed thereon.
2 The lugs 123 include a space 121 defined therebetween and 3 aligned holes 122 defined therein. A recessed connecting 4 section 13 is formed between the engaging section 12 and the fixed jaw 14. The recessed connecting section 13 includes a 6 recess 131 defined in each of two sides thereof and thus has 7 a thickness smaller then that of the elongated member 10. The 8 recessed connecting section 13 further includes a transverse 9 hole 1311 defined therein.
.LO The adjustable wrench further includes a movable jaw 11 20 having a first end on which a clamping section 21 is .L2 formed. The movable jaw 20 further includes a second end .L3 including a pair of spaced wall members 27 which, in turn, 14 define a space 22 therebetween. The wall members 27 include =_5 aligned holes 221 defined in a first section end thereof for ~6 receiving a pin 23 therein and aligned holes 222 defined in a 7_'7 second section thereof for receiving a pin 24 therein.
7_8 The adjustable wrench further includes an adjusting J_9 means 30 which, in turn, includes a screw rod 32 with a wheel 20 31 integrally formed on a mediate section thereof. The wheel 21 31 includes a plurality of alternately disposed longitudinal 22 ribs 311 and grooves 312. The adjustable wrench further 23 includes an elastic means. In an embodiment of the invention, 24 the elastic means 40 has a first end 41 and a second end 42 2.5 which will be described later.
26 In assembly, still referring to Figs. 1 and 2 and 1 further to Fig. 3, the second end 42 of the elastic member 40 2 is inserted into a compartment 15 (Fig. 3) defined in the 3 movable jaw 20. A pin 25 having a transverse screw hole 251 4 is mounted in the holes 122 while another pin 24 having a transverse screw hole 241 is mounted in the holes 222. Then, 6 two ends of the screw rod 31 of the adjusting means 30 are 7 respectively threadedly engaged with the transverse screw 8 holes 251 and 241. Thereafter, the holes 221 of the movable 9 jaw 20 are aligned with the hole 1311 of the recessed :LO connecting section 13, and the pin 23 is inserted into the .L1 holes 221 and 1311, thereby allowing pivotal movement of the .12 movable jaw 20 relative to the fixed jaw 14. It is .L3 appreciated that the recessed connecting section 13 is 14 received in the space 2-2 of the movable jaw 20, and the wall .L5 members 27 are respectively located on both sides of the .L6 recessed connecting section 13. As shown in Fig. 3, the first 17 end 41 of the elastic means 40 is extended into one of the :~8 longitudinal grooves 312 of the wheel 31 such that the 19 movable jaw 20 is retained in a certain angular relationship 20 with the fixed jaw 14 unless a relatively large force is 21 applied to rotate the wheel 31 to overcome the force of the 2.2 elastic means 40 and to urge the first end 41 of the elastic 23 means 40 to engage with another longitudinal groove 312. It 24 is appreciated that when the movable jaw 20 is adjusted to 25 completely clamp a fastener, e.g., a bolt, the wheel 31 may 26 be rotated in a reverse direction such that the first end 41 1 of the elastic means 40 passes through three of the 2 longitudinal ribs 311 at which position the movable jaw 20 3 together with the fixed jaw 14 may securely, adequately clamp 4 the bolt in position, i.e., neither too tight nor too loose.
It is appreciated that the clamping sections 21 and 141 may 6 be hooks which may assist in speedy clamping of the fastener.
7 In addition, in an alternative embodiment of the invention, 8 the clamping sections 21 and 141 can be used to speedily 9 clamp the fastener without provision of the adjusting means 30.
~:1 Fig. 4 illustrates an alternate embodiment of the ~_2 invention, in which the elastic means 40 is replaced by a rod __3 50 having a first end received in a compartment 15' defined ~_4 in the elongated member 10 and a second end received in one of the longitudinal grooves 312, and an elastic member 60 is ~_6 mounted in the compartment 15' to bias the rod 50 upwardly to 7_7 engage with one of the longitudinal grooves 312.
18 Referring to Fig. 5, the wheel 31 may be rotated so 19 as to urge the movable jaw 20 to pivot relative to the pin 23, thereby changing a distance between the clamping section 21 21 of the movable jaw 20 and the clamping section 141 of the 22 fixed jaw 14. Thus, the adjustable wrench in accordance with 23 the present invention may be used to clamp fasteners of 24 various sizes, as shown in Fig. 10.
In operation, referring to Fig. 6, the user may rotate 26 the elongated member 10 in a direction (e. g., clockwise) 1 through an angle to tighten or loosen the bolt (a small one 2 in this embodiment) which has been securely clamped between 3 the fixed jaw 14 and the movable jaw 20. Then, if the 4 elongated member 10 is stopped by an obstacle during operation, the user may rotate the elongated member 10 in a 6 reverse direction (e.g., counterclockwise, see Fig. 7) 7 without the need of disengaging the wrench from the bolt, in 8 which the clamping section 141 leaves corner "4" and moves 9 toward corner "3", while the clamping section 21 leaves :LO corner "1" and moves toward corner "0" to a position shown in :L1 Fig. 8, where the user may again operate the elongated member :L2 10 in the clockwise direction, as shown in Fig. 9. It is :L3 appreciated that a gap 70 (Fig. 3) is defined between the :L4 bolt and the fixed jaw 20 which allows convenient reverse :L5 rotational movement of the wrench without the need of :L6 disengaging the wrench from the bolt. In this embodiment, the :17 wrench is rotated in the reverse direction through 60 :LS degrees. Nevertheless, further reverse rotational movement :19 (e.g., 120 degrees or even more) can be done according to the 20 need.
21 According to the above description, it is appreciated 22 that the wrench of the present invention can be quickly, 23 easily adjusted to securely clamp the fastener by means of 24 rotating the wheel 30, and the structure and assembly are 25 simple and thus is inexpensive in cost. In addition, the 26 elastic means 40, 50 may securely retain the movable jaw 20 1 in position. Furthermore, the reverse rotation of the wheel 2 30 which makes the first end 41 of the elastic means 40 to 3 pass through three of the longitudinal ribs 311 which allows 4 the wrench to reliably clamp the fastener between the fixed jaw 14 and the movable jaw 20, which can be deemed as micro-6 adjustment of the wrench. Moreover, the head portion, i.e., 7 the fixed jaw 14/movable jaw 20 is relatively small and thus 8 can be used in a relatively small space. Further, the 9 clamping sections 21 and 141 allow speedy clamping of the ~'_0 fastener.
7_1 Referring now to Figs. 11 and 12, a second embodiment 12 of an adjustable wrench in accordance with the present 13 invention generally includes an elongated member 10 having a 7_4 first handle end 11 and a second end on which a fixed jaw 14 i5 is formed. The fixed jaw 14 includes a first clamping section ~_6 14 in the form of a hook. Also formed on the second end of 17 the elongated member 10 is an engaging section 12 having a 18 pair of lugs 123 formed thereon. The lugs 123 include a space 19 121 defined therebetween and aligned holes 122 defined 20 therein. A recessed connecting section 13 is formed between 21 the engaging section 12 and the fixed jaw 14. The recessed 22 connecting section 13 includes a recess 131 defined in each 2.3 of two sides thereof and thus have a thickness smaller than 24 that of the elongated member 10. The recessed connecting 25 section 13 further includes a hole 1311 defined therein.
26 The adjustable wrench further includes a movable jaw 1 20 having a first end on which a second clamping section 21 2 (also in the form of a hook) is formed. The movable jaw 20 3 further includes a second end including a pair of spaced wall 4 members 27 which, in turn, define a space 22 therebetween.
The wall members 27 include aligned holes 221 defined in a 6 first section thereof for receiving a pin 23 therein and 7 aligned holes 222 defined in a second section thereof for 8 receiving a pin 24 having a transverse screw hole 241 9 therein. The movable jaw 20 further includes an engaging face 7_0 26 defined adjacent to the second clamping section 21 to 11 provide a close contact with the fastener to be tightened or 7_2 loosened.
7_3 The adjustable wrench further includes an adjusting 7_4 means 30, which, in turn, includes a screw rod 32 with a wheel 31 integrally formed on a mediate section thereof. The 16 wheel 31 includes a plurality of alternately disposed 7_7 longitudinal ribs 311 and grooves 312. The adjustable wrench 7_8 further includes a spring 124 and a ball 126 which are 19 received in a compartment 125 (Fig. 13) defined in the second end of the elongated member 10 and communicated with the 21 space 121 between the lugs 123.
22 A hollow cylindrical member 28 is pivotally received 23 in the aligned holes 122 and includes an eccentric 24 longitudinal hole 284 (Fig. 11) defined therein for pivotally receiving a pin 25 having a transverse screw hole 251. The 26 hollow cylindrical member 28 includes two spaced arcuate 1 slots 281, 282 defined in a periphery thereof, each arcuate 2 slot 281, 282 having two end edges 281a, 281b; 282a, 282b, 3 respectively. In addition, referring to Fig. 13, a catch 4 member 29 is secured to the hollow cylindrical member 28 by a screw 294. The catch member 29 includes a first end having an 6 engaging surface 291 formed thereon and a second end having 7 an engaging tooth 295 formed thereon. The engaging surface 8 291 includes two hooked portions 292, 293 respectively formed 9 on two ends thereof such that the catch member 29 can be 7_0 securely attached to the end edges 281a and 282a respectively 7_1 of the arcuate slots 281 and 282, best shown in Fig. 13.
7_2 In assembly, still referring to Figs. 11 to 13, the 7_3 pin 25 is inserted into the hollow cylindrical member 28 7_4 which, in turn, is inserted into the aligned holes 122. The catch member 29 is then secured to the hollow cylindrical 16 member 28 in which the two hooked ends 292 and 293 of the 17 first end of the catch member 29 is engaged with the end 18 edges 281a and 282 respectively of the arcuate slots 281 and 7_9 282 to move therewith, best shown in Fig. 13. The two ends of the screw rod 31 are respectively threadedly engaged with 21 transverse screw holes 251 and 241 defined in the pins 25 and 22 24, respectively.
23 Thereafter, the holes 221 of the movable jaw 20 are 24 aligned with the hole 1311 of the recessed connecting section 13, and the pin 23 is inserted into the holes 221 and 1311, 26 thereby allowing pivotal movement of the movable jaw 20 1 relative to the fixed jaw 14. It is appreciated that the 2 recessed connecting section 13 is received in the space 22 of 3 the movable jaw 20, and the wall members 27 are respectively 4 located on both sides of the recessed connecting section 13.
As shown in Fig. 13, the spring 124 biases the ball 123 to 6 engage with one of the end edges 281b and 282b, which will be 7 described later.
g Fig. 15 illustrates application of the second 9 embodiment of the adjustable wrench of the present invention to clamp fasteners of various sizes, wherein the required 11 adjustment thereof is to merely rotate the wheel 31 which 12 causes movement of the pins 25 and 24 to thereby urge the 7_3 movable jaw 20 to move relative to the fixed jaw 14 to 14 securely hold the fastener with the engaging face 26 as well as the clamping sections 21 and 141.
16 When in use, before tightly clamping the fastener, ~7 e.g., a bolt (Fig. 15), the catch member 29 is pushed 18 upwardly to a status shown in Fig. 13, and the ball 126 19 engages with the end edge 282b of the arcuate slot 282. The '?0 user may adjust position of the movable jaw 20 to tightly 21 clamp the fastener (Fig. 15). As the pin 25 is received in 22 the eccentric hole 284 of the hollow cylindrical member 28, a 23 gap "L" (Fig. 13) is generated between the wheel 31 and the 24 engaging section 12. However, it is noted that the fastener '?5 cannot be speedily rotated for tightening or loosening under 26 this status without further fine adjustment. At this time, 1 the user may press the second end of the catch member 29 2 toward the wheel 31 to a status shown in Fig. 14, wherein the 3 engaging tooth 275 securely engages with the wheel 31. The 4 ball 126 disengages from the end edge 282b, slides through the periphery of the hollow cylindrical member 28, and then 6 engages with another end edge 281b. As a result, the hollow 7 cylindrical member 28 carries the screw rod 32 to the left 8 such that the gap "L" between the wheel 31 and the engaging 9 section 12 is shortened or even disappears, meanwhile, the movable jaw 20 is slightly moved away from the fastener such 11 that a tolerance clearance therebetween is adjusted allow 12 speedy rotation of the fastener for tightening or loosening.
7_3 More specifically, the catch member 29 and the cylindrical 14 member 28 act as a fine adjusting means for actuating the adjusting means 30 to urge the second clamping section 21 of 16 the movable jaw 20 to move slightly away from the first 17 clamping section 141 of the fixed jaw 14. It is appreciated 18 that the spring 124 and the ball 126 provide a positioning 7_9 effect for the movable jaw 20 to securely clamp the fastener after the fine adjustment is completed.
21 According to the above description, it is appreciated 22 that the adjustable wrench in accordance with the present 23 invention may speedily clamp fasteners of different sizes, 24 and after ordinary speedy adjustment of the distance between the clamping sections 141 and 21, the catch member 27 is 26 pressed to accomplish the fine adjustment which provides a 1 positioning effect between the fastener and the adjustable 2 wrench under the action of the spring 124 and the ball 123 3 and which allows speedy tightening or loosening of the 4 fastener (i.e., the user does not have to slowly adjust the clearance for speedily rotating the fastener). Again, the 6 clamping sections 21 and 141 allow speedy clamping of the 7 fastener.
8 Although the invention has been explained in relation 9 to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made 11 without departing from the spirit and scope of the invention 12 as hereinafter claimed.
Claims (19)
1. An adjustable wrench, comprising:
an elongated member including a first handle end and a second end, the second end including a fixed jaw and an engaging section formed thereon, a movable jaw having a clamping section formed on a first end thereof and a second end pivotally connected to the second end of the elongated member, an adjusting means mounted between the second end of the elongated member and the movable jaw to urge the movable jaw to pivot relative to the fixed jaw, and means for retaining the adjusting means in position.
an elongated member including a first handle end and a second end, the second end including a fixed jaw and an engaging section formed thereon, a movable jaw having a clamping section formed on a first end thereof and a second end pivotally connected to the second end of the elongated member, an adjusting means mounted between the second end of the elongated member and the movable jaw to urge the movable jaw to pivot relative to the fixed jaw, and means for retaining the adjusting means in position.
2. The adjustable wrench according to claim 1, wherein the retaining means is an elastic means having a first end attached to the adjusting means to fractionally retain the adjusting means in position and a second end securely received in one of the elongated member and the movable jaw.
3. The adjustable wrench according to claim 1, wherein the adjusting means includes a screw rod having a first end and a second end, the screw rod includes a wheel formed on a mediate section thereof, the movable jaw includes a first pin mounted therein, the first pin has a first transverse screw hole through which the first end of the screw rod extends, and the engaging section includes a second pin mounted therein, the second pin includes a second transverse screw hole through which the second end of the screw rod extends.
4. The adjustable wrench according to claim 3, wherein the wheel includes a plurality of alternately disposed longitudinal ribs and longitudinal grooves, and the first end of the elastic means is received in one of the longitudinal grooves.
5. The adjustable wrench according to claim 4, wherein the movable jaw includes a compartment defined therein, and the elastic means is a hollow elastic tube having a first end received in one of the longitudinal grooves and a second end securely received in the compartment.
6. The adjustable wrench according to claim 4, wherein the elongated member includes a compartment defined therein, and the elastic means includes a rod having a first end and a second end securely received in the compartment, and an elastic member is received in the compartment to bias the first end of the rod to engage with one of the longitudinal groove.
7. The adjustable wrench according to claim 3, wherein the engaging section of the elongated member includes a pair of spaced lugs having aligned holes defined therein for receiving the second pin.
8. The adjustable wrench according to claim 3, wherein the second end of the movable jaw includes a pair of spaced wall members, the wall members include first aligned holes defined in a first section thereof for receiving a third pin and second aligned holes defined in a second section thereof for receiving the first pin, and a connecting section is formed between the fixed jaw and the engaging section, wherein the connecting section includes a through hole through which the third pin extends.
9. The adjustable wrench according to claim 3, wherein the clamping section of the movable jaw is a hook, and the fixed jaw includes a hooked clamping section to cooperate with the hook of the movable jaw to speedily clamp a fastener therebetween when applied to the fastener.
10. An adjustable wrench, comprising:
an elongated member including a first handle end and a second end, the second end including a fixed jaw and an engaging section formed thereon, the fixed jaw having a first clamping section, a movable jaw having a second clamping section formed on a first end thereof and a second end pivotally connected to the second end of the elongated member, an adjusting means mounted between the second end of the elongated member and the movable jaw to urge the movable jaw to pivot relative to the fixed jaw, a fine adjusting means for actuating the adjusting means to urge the second clamping section of the movable jaw to move slightly away from the first clamping section of the fixed jaw, and means for retaining the adjusting means in position.
an elongated member including a first handle end and a second end, the second end including a fixed jaw and an engaging section formed thereon, the fixed jaw having a first clamping section, a movable jaw having a second clamping section formed on a first end thereof and a second end pivotally connected to the second end of the elongated member, an adjusting means mounted between the second end of the elongated member and the movable jaw to urge the movable jaw to pivot relative to the fixed jaw, a fine adjusting means for actuating the adjusting means to urge the second clamping section of the movable jaw to move slightly away from the first clamping section of the fixed jaw, and means for retaining the adjusting means in position.
11. The adjustable wrench according to claim 10, wherein the adjusting means includes a screw rod having a first end and a second end, the screw rod includes a wheel formed on a mediate section thereof, the movable jaw includes a first pin mounted therein, the first pin has a first transverse screw hole through which the first end of the screw rod extends, and the engaging section includes a second pin mounted therein, the second pin includes a second transverse screw hole through which the second end of the screw rod extends.
12. The adjustable wrench according to claim 11, wherein the wheel includes a plurality of alternatively disposed longitudinal ribs and longitudinal grooves.
13. The adjustable wrench according to claim 11, wherein the fine adjusting means includes a hollow cylindrical member and a catch member, the hollow cylindrical member includes an eccentric longitudinal hole for receiving the second pin and a periphery, the catch member includes a first end secured to the periphery of the hollow cylindrical member to move therewith and a second end for releasably engaging with the wheel.
14. The adjusting wrench according to claim 13, wherein the periphery of the hollow cylindrical member includes a first arcuate slot defined therein and a second arcuate slot defined therein and spaced from the first arcuate slot, each of said first arcuate slot and said second arcuate slot includes a first end edge and a second end edge, and the first end of the catch member includes an engaging surface having two hooked portions respectively formed on two ends thereof for securely engaging with the first end edges respectively of the first arcuate slot and the second arcuate slot.
15. The adjustable wrench according to claim 14, wherein the engaging section of the elongated member includes a pair of spaced lugs having aligned holes defined therein for receiving the second pin, the spaced lugs includes a space defined therebetween.
16. The adjustable wrench according to claim 15, wherein the second end of the elongated member includes a compartment defined therein and communicated with the space between the spaced lugs, and the retaining means includes a ball and a spring received in the compartment, the spring biases the ball to engage with one of the second end edges respectively of the first arcuate slot and the second arcuate slot.
17. The adjustable wrench according to claim 16, wherein the second end of the catch member engages with the adjusting means to cause the ball to engage with the second end edge of the first arcuate slot to thereby achieve fine adjustment of the movable jaw.
18. The adjustable wrench according to claim 16, wherein the ball engages the second end edge of the second arcuate slot before fine adjustment of the movable jaw while the second end of the catch member disengages from the adjusting means.
19. The adjustable wrench according to claim 11, wherein the second end of the movable jaw includes a pair of spaced wall members, the wall members include first aligned holes defined in a first section thereof for receiving a third pin and second aligned holes defined in a second section thereof for receiving the first pin, and a connecting section is formed between the fixed jaw and the engaging section, wherein the connecting section includes a through hole through which the third pin extends.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97112316A EP0895831A1 (en) | 1997-07-18 | 1997-07-18 | Adjustable wrench |
| CA002234834A CA2234834C (en) | 1997-07-18 | 1998-04-14 | Adjustable wrench |
| JP10222943A JP2000052262A (en) | 1997-07-18 | 1998-08-06 | Adjustable spanner |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP97112316A EP0895831A1 (en) | 1997-07-18 | 1997-07-18 | Adjustable wrench |
| CA002234834A CA2234834C (en) | 1997-07-18 | 1998-04-14 | Adjustable wrench |
| JP10222943A JP2000052262A (en) | 1997-07-18 | 1998-08-06 | Adjustable spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2234834C true CA2234834C (en) | 2000-11-21 |
Family
ID=33135384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002234834A Expired - Fee Related CA2234834C (en) | 1997-07-18 | 1998-04-14 | Adjustable wrench |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0895831A1 (en) |
| JP (1) | JP2000052262A (en) |
| CA (1) | CA2234834C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4768103B2 (en) * | 2000-06-06 | 2011-09-07 | 日東電工株式会社 | Adhesive composition, its adhesive sheet and method for producing them |
| CN112140043A (en) * | 2020-09-22 | 2020-12-29 | 何燕 | Adjustable wrench convenient to lock and using method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1414839A (en) * | 1919-09-26 | 1922-05-02 | Stuarts Arthur | Wrench |
| US1367407A (en) * | 1920-02-09 | 1921-02-01 | Oak B Mcclurkin | Wrench |
| FR660773A (en) * | 1928-12-20 | 1929-07-17 | Tightening wrench | |
| US2407990A (en) * | 1943-05-17 | 1946-09-24 | Benjamin L Lurie | Pipe wrench |
| US2688893A (en) * | 1952-08-01 | 1954-09-14 | Roy M Buck | Adjusting screw lock for adjustable end wrenches |
-
1997
- 1997-07-18 EP EP97112316A patent/EP0895831A1/en not_active Withdrawn
-
1998
- 1998-04-14 CA CA002234834A patent/CA2234834C/en not_active Expired - Fee Related
- 1998-08-06 JP JP10222943A patent/JP2000052262A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0895831A1 (en) | 1999-02-10 |
| JP2000052262A (en) | 2000-02-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |