CA2775551A1 - Open-ended ratchet wrench - Google Patents
Open-ended ratchet wrench Download PDFInfo
- Publication number
- CA2775551A1 CA2775551A1 CA2775551A CA2775551A CA2775551A1 CA 2775551 A1 CA2775551 A1 CA 2775551A1 CA 2775551 A CA2775551 A CA 2775551A CA 2775551 A CA2775551 A CA 2775551A CA 2775551 A1 CA2775551 A1 CA 2775551A1
- Authority
- CA
- Canada
- Prior art keywords
- ratchet
- head
- ratchet wrench
- channel
- shaped
- 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.)
- Abandoned
Links
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
- B25B13/02—Spanners; Wrenches with rigid jaws
- B25B13/08—Spanners; Wrenches with rigid jaws of open jaw type
-
- 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
- B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
- B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
- B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
- B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
An open-ended wrench characterized by having a ratcheting head at each end which is rotatively supported or held directly by the elongated main body having pawls which are spreadable and may be disengaged from the teeth on the ratchet wrench head allowing it to freely spin and disengage from a tightened hose assembly.
A
partially exposed sprocket at each ratchet head allows rotation up to 55 degrees in either direction from its starting point, enabling it to be engaged with, or disengaged from, a nut, bolt, or hose-fitting more easily in a tight space. This wrench comprises an elongated main body having a 'C'-shaped 'C'-channel at each end forming an annular recess around and rotatively holding the corresponding flange on the outer periphery of the ratchet wrench head. A pair of pawls attached to a mounting pin in the elongated main body extend into the annular recess at diametrically opposed points relative to the corresponding ratchet wrench head may be easily spread with the pull of a spring-loaded button located toward each end of the elongated main body.
A
partially exposed sprocket at each ratchet head allows rotation up to 55 degrees in either direction from its starting point, enabling it to be engaged with, or disengaged from, a nut, bolt, or hose-fitting more easily in a tight space. This wrench comprises an elongated main body having a 'C'-shaped 'C'-channel at each end forming an annular recess around and rotatively holding the corresponding flange on the outer periphery of the ratchet wrench head. A pair of pawls attached to a mounting pin in the elongated main body extend into the annular recess at diametrically opposed points relative to the corresponding ratchet wrench head may be easily spread with the pull of a spring-loaded button located toward each end of the elongated main body.
Description
OPEN-ENDED RATCHET WRENCH
This invention relates to a wrench and, more particularly, a ratchet wrench wherein at least one end of the wrench is open and operates as a ratchet wrench.
The wrenches of the above type which have been proposed so far are essentially made with an elongated main body, a rotary ratchet wrench head and additional parts to rotatively secure the ratchet wrench head at one end of the elongated body. Those additional parts add to the complexity and cost of the wrench and make the end of the wrench relatively bigger than otherwise necessary, thereby limiting the use of the wrench in tight spots.
The innovations of this design are:
1. The ability to spread the pawls, or release them from contact with the teeth of the sprocket.
This invention relates to a wrench and, more particularly, a ratchet wrench wherein at least one end of the wrench is open and operates as a ratchet wrench.
The wrenches of the above type which have been proposed so far are essentially made with an elongated main body, a rotary ratchet wrench head and additional parts to rotatively secure the ratchet wrench head at one end of the elongated body. Those additional parts add to the complexity and cost of the wrench and make the end of the wrench relatively bigger than otherwise necessary, thereby limiting the use of the wrench in tight spots.
The innovations of this design are:
1. The ability to spread the pawls, or release them from contact with the teeth of the sprocket.
2. The "C"-shaped "C"-channel forming an annular recess to hold the flange on the outer edge of the sprocket.
3. The exposed sprocket.
4. The ability to rotate the sprocket head up to 55 degrees and still have a fully open and useful radial slot with which to engage a nut or bolt head in a tight spot.
It is a general object of the present invention to provide an open-ended ratchet wrench of the above type which obviates the above mentioned disadvantages.
It is another general object of the present invention to provide an open-ended ratchet wrench of the above type of which the ratchet head may rotate freely from contact by the pawls on its teeth, allowing it to be easily slipped off tightened hoses and other objects of the like.
It is a further object of the present invention to provide an open-ended ratchet wrench of the above type which produces a simple and rugged combination of the ratchet wrench head with the body of the wrench in which the sprocket is largely exposed in order to be able to attach to, and detach from, a nut or bolt head through a broad range of angles.
It is a further object of the present invention to provide the ability to spread the pawls and detach them from the sprocket enabling the sprocket to spin freely and release itself from a hose or similar object when necessary.
It is still another object of the present invention to be up-graded to provide an open-ended ratchet wrench of the above type wherein the ratchet wrench head may be easily replaced by one of another socket size to form a handy weight and space saver and economical wrench assembly for the convenience of motorists, motorcyclists, etc....
The above and other objects and advantages of the present invention will be better understood with reference to the following detailed description of a preferred embodiment thereof, which is illustrated, by way of example, in the accompanying drawings, in which:
Figure 1 is a perspective view of an open-ended ratchet wrench according to the present invention.
Figure 2 is a partial detailed close-up view of one end of the wrench to better illustrate the head of the wrench.
Figure 3 is a cross-sectional view of one end of the wrench better illustrating the internal details of the corresponding head of the wrench, showing the pawls spread apart, disengaging them from the teeth of the sprocket and having the sprocket in a rotated position.
Figure 4 is a view corresponding to the view of figure 3 but having the pawls in ratchet mode and being engaged with the teeth of the sprocket and having the sprocket in a starting position.
Figure 5 is a side view of one "C"-shaped "C"-channel and sprocket at one end of the wrench as seen from the inner side thereof, having a cut-out view of the pawl 10, and cavity 9.
Figure 6 shows an exposed view of one side of the wrench head where the sprocket is in ratchet mode and is rotated to a 55 degree angle while still having a completely exposed and useable radial slot. The advantage of the wrench being able to work in this way is that it can be better used in tight spaces where it needs to be engaged with a nut or bolt head at odd angles.
The illustrated open-ended ratchet wrench includes a handle or elongated wrench body 1 having opposite end proportions each forming a 'C'-shaped 'C'-channel 2. The channel forms an intermediate space and an annular recess 3 communicating with and extending around the circumferential flange on the ratchet wrench head sprocket. Each channel communicates with, and holds firmly, a flange 4 comprising the outer rim and teeth of the sprocket, as best shown in figure 2. In fact, the annular recess 3 is defined by the corresponding flange 4.
The elongated wrench body will be upgraded to be horizontally split at each end by way of a hinged body segment, which is releasably connected to the main body and includes each one half of channel 2 at each end. Said hinged segment will be held in place by a sliding clamp.
The ratchet wrench head 7 is rotatably held by the channel 2 in its rotative sliding engagement in the corresponding annular recess 3 and by the corresponding flange 4. The periphery of each ratchet wrench head 7 is formed with a flange 4 and ratchet teeth 8. A cavity 9 is formed from the main body 1 and extends into the channel 2 at each end of the wrench. In each cavity 9, there is mounted a set of pawls which is biased by a spring 11 toward engagement with the ratchet teeth 8. The two pawls 10 at each end of the wrench are substantially diametrically spaced apart to ensure that at least one pawl will engage a tooth in any angular position of the ratchet wrench head 7.
Each ratchet wrench head is radially slotted and forms a socket to operatively engage either a nut the head of a bolt or a fitting on an hydraulic hose or the like. The radial slot 12 thus formed in each ratchet wrench head 7 operatively held in place by the channel 2 and circumferential flange 4 forms an open-ended ratchet wrench. The pawls are spread apart freeing the ratchet head 7 and allowing it to spin in either direction freely by pulling on a spring-loaded button 13 located toward the end one-third of the main body 1. The button 13 is shown in normal position in figure 4 and engaged in figure 3. Figure 4 illustrates the wrench in ratchet wrench mode and the arrows indicate the direction of rotation for loosening of a nut or bolt. The rotation of the wrench upside down allows the operation of the wrench for tightening.
In some cases, such as for motorists, it is not convenient to carry as many different wrenches as is required. With the afore-described wrench, this is not required. A single body 1 may be provided with a variety of ratchet wrench heads 7 of different socket sizes and the user may readily change one head for another when desired with no need for other tools to do so.
It is a general object of the present invention to provide an open-ended ratchet wrench of the above type which obviates the above mentioned disadvantages.
It is another general object of the present invention to provide an open-ended ratchet wrench of the above type of which the ratchet head may rotate freely from contact by the pawls on its teeth, allowing it to be easily slipped off tightened hoses and other objects of the like.
It is a further object of the present invention to provide an open-ended ratchet wrench of the above type which produces a simple and rugged combination of the ratchet wrench head with the body of the wrench in which the sprocket is largely exposed in order to be able to attach to, and detach from, a nut or bolt head through a broad range of angles.
It is a further object of the present invention to provide the ability to spread the pawls and detach them from the sprocket enabling the sprocket to spin freely and release itself from a hose or similar object when necessary.
It is still another object of the present invention to be up-graded to provide an open-ended ratchet wrench of the above type wherein the ratchet wrench head may be easily replaced by one of another socket size to form a handy weight and space saver and economical wrench assembly for the convenience of motorists, motorcyclists, etc....
The above and other objects and advantages of the present invention will be better understood with reference to the following detailed description of a preferred embodiment thereof, which is illustrated, by way of example, in the accompanying drawings, in which:
Figure 1 is a perspective view of an open-ended ratchet wrench according to the present invention.
Figure 2 is a partial detailed close-up view of one end of the wrench to better illustrate the head of the wrench.
Figure 3 is a cross-sectional view of one end of the wrench better illustrating the internal details of the corresponding head of the wrench, showing the pawls spread apart, disengaging them from the teeth of the sprocket and having the sprocket in a rotated position.
Figure 4 is a view corresponding to the view of figure 3 but having the pawls in ratchet mode and being engaged with the teeth of the sprocket and having the sprocket in a starting position.
Figure 5 is a side view of one "C"-shaped "C"-channel and sprocket at one end of the wrench as seen from the inner side thereof, having a cut-out view of the pawl 10, and cavity 9.
Figure 6 shows an exposed view of one side of the wrench head where the sprocket is in ratchet mode and is rotated to a 55 degree angle while still having a completely exposed and useable radial slot. The advantage of the wrench being able to work in this way is that it can be better used in tight spaces where it needs to be engaged with a nut or bolt head at odd angles.
The illustrated open-ended ratchet wrench includes a handle or elongated wrench body 1 having opposite end proportions each forming a 'C'-shaped 'C'-channel 2. The channel forms an intermediate space and an annular recess 3 communicating with and extending around the circumferential flange on the ratchet wrench head sprocket. Each channel communicates with, and holds firmly, a flange 4 comprising the outer rim and teeth of the sprocket, as best shown in figure 2. In fact, the annular recess 3 is defined by the corresponding flange 4.
The elongated wrench body will be upgraded to be horizontally split at each end by way of a hinged body segment, which is releasably connected to the main body and includes each one half of channel 2 at each end. Said hinged segment will be held in place by a sliding clamp.
The ratchet wrench head 7 is rotatably held by the channel 2 in its rotative sliding engagement in the corresponding annular recess 3 and by the corresponding flange 4. The periphery of each ratchet wrench head 7 is formed with a flange 4 and ratchet teeth 8. A cavity 9 is formed from the main body 1 and extends into the channel 2 at each end of the wrench. In each cavity 9, there is mounted a set of pawls which is biased by a spring 11 toward engagement with the ratchet teeth 8. The two pawls 10 at each end of the wrench are substantially diametrically spaced apart to ensure that at least one pawl will engage a tooth in any angular position of the ratchet wrench head 7.
Each ratchet wrench head is radially slotted and forms a socket to operatively engage either a nut the head of a bolt or a fitting on an hydraulic hose or the like. The radial slot 12 thus formed in each ratchet wrench head 7 operatively held in place by the channel 2 and circumferential flange 4 forms an open-ended ratchet wrench. The pawls are spread apart freeing the ratchet head 7 and allowing it to spin in either direction freely by pulling on a spring-loaded button 13 located toward the end one-third of the main body 1. The button 13 is shown in normal position in figure 4 and engaged in figure 3. Figure 4 illustrates the wrench in ratchet wrench mode and the arrows indicate the direction of rotation for loosening of a nut or bolt. The rotation of the wrench upside down allows the operation of the wrench for tightening.
In some cases, such as for motorists, it is not convenient to carry as many different wrenches as is required. With the afore-described wrench, this is not required. A single body 1 may be provided with a variety of ratchet wrench heads 7 of different socket sizes and the user may readily change one head for another when desired with no need for other tools to do so.
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED, ARE DEFINED AS FOLLOWS:
1. An open-ended ratchet wrench comprising an elongated body having a handle portion and end portion forming a 'C'-shaped 'C'-channel. Said 'C'-shaped 'C'-channel defines an intermediate space and an annular recess in communication with and extending around the flange on the outer circumference of the ratchet head. One ratchet head is rotatively mounted in said intermediate space in rotary sliding engagement with said circumferential flange, and having ratchet teeth around the periphery thereof, one pair of spreadable, spring-biased pawls mounted on said main body extending into said 'C'-shaped 'C'-channel respectively at substantially diametrically opposed points respectively relative to said ratchet wrench head and operatively biased toward engagement with corresponding ratchet teeth.
2. An open-ended ratchet wrench as defined in claim 1, wherein said 'C'-shaped 'C'-channel defines a pair of outer end respectively. Said ratchet wrench head has a circumferential flange fitting into said 'C'-shaped 'C'-channel and rotatively held in place by said flange. Said 'C'-shaped 'C'-channel arcs 250 degrees around the periphery of said ratchet wrench head, leaving it exposed through a 110 degree arc around the periphery of the ratchet wrench head.
3. An open-ended ratchet wrench as defined in claim 2 wherein said 'C'-shaped 'C'-channel allows said ratchet wrench head to rotate up to 55 degrees to either side of its starting point straight off the end of said main body and still provide a fully exposed and useful radial slot with which to engage a nut, bolt head or hose-head fitting in a tight spot.
4. An open-ended ratchet wrench as defined in claim 3, wherein said ratchet teeth are engaged in said 'C'-shaped 'C'-channel, said 'C'-shaped 'C'-channel includes a pair of cavities communicating with said annular recess and said pawls are projected into said cavities respectively in operative engagement with the ratchet teeth.
5. An open-ended ratchet wrench as defined in claim 4, wherein said spreadable, spring-biased pawls may be widened and released from contact with the teeth of said ratchet head with the press of a spring-loaded button located in said main body. By pressing said spring-loaded button away from the ratchet head, contact is made with the inside long axis of the pawls causing them to widen and disengage from the teeth of the ratchet head thus allowing said ratchet head to spin freely and become easily removed from a tightened hose-fitting in a tight spot.
6. An open-ended ratchet wrench as defined in claim 5, wherein said elongated main body includes another end portion forming another 'C'-shaped 'C'-channel defining an intermediate space and an annular recess in communication with and extending around the flange on the outer circumference of the ratchet head, another ratchet wrench head rotatively mounted in said intermediate space in rotary sliding engagement with said circumferential flange, and having ratchet teeth around the periphery thereof, one pair of spreadable, spring-biased pawls mounted on said main body extending into said 'C'-shaped 'C'-channel respectively at substantially diametrically opposed points respectively relative to said ratchet wrench head and operatively biased toward engagement with corresponding ratchet teeth.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2775551A CA2775551A1 (en) | 2012-04-30 | 2012-04-30 | Open-ended ratchet wrench |
| EP17183560.6A EP3275595A3 (en) | 2012-04-30 | 2013-04-29 | Open-ended ratchet wrench |
| US14/395,937 US10406658B2 (en) | 2012-04-30 | 2013-04-29 | Open-ended ratchet wrench |
| EP13785317.2A EP2844432B1 (en) | 2012-04-30 | 2013-04-29 | Open-ended ratchet wrench |
| PCT/CA2013/000423 WO2013163731A1 (en) | 2012-04-30 | 2013-04-29 | Open-ended ratchet wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2775551A CA2775551A1 (en) | 2012-04-30 | 2012-04-30 | Open-ended ratchet wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2775551A1 true CA2775551A1 (en) | 2013-10-30 |
Family
ID=49510690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2775551A Abandoned CA2775551A1 (en) | 2012-04-30 | 2012-04-30 | Open-ended ratchet wrench |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2775551A1 (en) |
-
2012
- 2012-04-30 CA CA2775551A patent/CA2775551A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |
Effective date: 20140430 |
|
| FZDE | Discontinued |
Effective date: 20140430 |