CA1299066C - Slasher - Google Patents
SlasherInfo
- Publication number
- CA1299066C CA1299066C CA 536569 CA536569A CA1299066C CA 1299066 C CA1299066 C CA 1299066C CA 536569 CA536569 CA 536569 CA 536569 A CA536569 A CA 536569A CA 1299066 C CA1299066 C CA 1299066C
- Authority
- CA
- Canada
- Prior art keywords
- cradle
- slasher
- frame
- tree
- mobile
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B27/00—Guide fences or stops for timber in saw mills or sawing machines; Measuring equipment thereon
- B27B27/04—Guide fences or stops for timber in saw mills or sawing machines; Measuring equipment thereon arranged perpendicularly to the plane of the saw blade
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G23/00—Forestry
- A01G23/003—Collecting felled trees
- A01G23/006—Log skidders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
- B27B5/10—Wheeled circular saws; Circular saws designed to be attached to tractors or other vehicles and driven by same
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Operation Control Of Excavators (AREA)
Abstract
ABSTRACT
There is disclosed a slasher mounted on a mobile vehicle with tree-loading means. The vehicle is of a type that is readily movable through rough terrain, and the slasher means is mounted transversely of the front of the vehicle so that the vehicle can be driven up to the side of a felled tree, the tree lifted into the cradle of the slasher, the slasher operated to cut the tree, and the cut log removed from the slasher and the cycle repeated.
The particular arrangement of parts permits high-speed processing of substantial quantities of felled trees.
There is disclosed a slasher mounted on a mobile vehicle with tree-loading means. The vehicle is of a type that is readily movable through rough terrain, and the slasher means is mounted transversely of the front of the vehicle so that the vehicle can be driven up to the side of a felled tree, the tree lifted into the cradle of the slasher, the slasher operated to cut the tree, and the cut log removed from the slasher and the cycle repeated.
The particular arrangement of parts permits high-speed processing of substantial quantities of felled trees.
Description
Thls invention relates ~o slashers, and more particularly to mobile, self-propelled slashers capable of use in difficult terrain.
It is conventional practice in lumber harvesting to fell a number of trees, process them through a dellmber, and then to saw lengths of the tree o~f, ~sually in 8 or 16 foot lengths, for later processing, an operatlon known as slashing.
Many attempts have been made to design machines capable of carrying out slashing operations at hlgh speed. However, the prior art does not provide a mobile slasher that can be operated by one person, that is capable of moving in rough terrain SUCII as a partially cleared forest, that does not require expensive conveyors for conveying a log through the machine, that does not require lifting of the whole tree for processing, that is stable even on surfaces that are not perfectly level, and can be manufactured at low cost.
SUM~ARY OF THE I~V~NTION
The present invention provide~ a machine tha~ satis~ies the above requirements in a surprisingly simple and efficient manner.
The invention provides a mobile slasher co~prlsing: a self-propelled steerable vehicle having a frame; slasher means mounted on said frame, said slasher means comprislng a cradle that is oriented transversely to the length o~ said frame and is open at one end, a butt plate being positioned adjacent ~he opposite end of said cradle, and a circular saw heing positioned on said frame adjacent said open end of said cradle and being operable in ~;.
906~
a cutting plane perpendicular to the length of said cradle for cutting trees contained therein; and loading means on said frame for engaging the butt end of a felled tree and moving it longitudinally into said slasher means through sald open end of said cradle and into engagement with said butt plate; said mobile slasher keing adapted to be driven to a location adjacent the butt end of a felled tree, positioned with said cradle oriented generally longitudinally of the tree, and operated at that location in repeated cycles to cut the tree into predetermined lengths, such cut lengths being removed from said cradle by said loading means for subsequent handling.
The mobile slasher can be produced to include a combination of known machines. The basic component is a Timberjack ~TM) model TJ30 carrier, manufactured by Timberjack Inc. of Woodstock, Ontario, Canada. This comprises a chassiæ
; having four hydrostatically driven wheels, and which is steered in a conventional ~anner by `:
~ la ~ C
"bending" the chassis on a central pivot. Centrally of the chassis there is mounted a "Littlejohn" (TM) loader of a type manufactured hy Lakeshore Industrial, Two Harbors, Michigan, U.S.A., mounted on a pedestal so that it is elevated to provide the operator with a clear view of the terrain and the lumber to be processed. The loader arm is equipped with a grapple of a type also manufactured by Lakeshore Industrial. Transversely of one end of the chassis of the basic vehicle a slasher of known type is pivotally mounted, on a transverse axis and in the working position rests on the ground. A circular saw blade is disposed at one end of the slasher, and a hydraulically operable butt plate is disposed at the opposite end of the slasher. The vehicle can be driven up to a felled tree, and the grapple operated to grasp the tree, lift it into the slasher, abut it against the butt plate, position it by movement of the butt plate, whereafter the circular saw blade, which is mounted on an arm, is operated to cut the tree to length, whereafter it is removed from the slasher and placed either in a pile beside the machine or into a truck.
Operation of the machine is smooth and continuous and as mentioned above is carried out by one worker- The simplicity oE
the machine, and its mobility, enables it to cut felled trees into desired lengths at considerable speed.
BRIEF DESCRIPTION OF THE DR~WINGS
An embodiment of the invention is described below, with reference to the accompanying drawings, in which:
Figure 1 is a plan view of a machine manufactured according to the inventi7n:
It is conventional practice in lumber harvesting to fell a number of trees, process them through a dellmber, and then to saw lengths of the tree o~f, ~sually in 8 or 16 foot lengths, for later processing, an operatlon known as slashing.
Many attempts have been made to design machines capable of carrying out slashing operations at hlgh speed. However, the prior art does not provide a mobile slasher that can be operated by one person, that is capable of moving in rough terrain SUCII as a partially cleared forest, that does not require expensive conveyors for conveying a log through the machine, that does not require lifting of the whole tree for processing, that is stable even on surfaces that are not perfectly level, and can be manufactured at low cost.
SUM~ARY OF THE I~V~NTION
The present invention provide~ a machine tha~ satis~ies the above requirements in a surprisingly simple and efficient manner.
The invention provides a mobile slasher co~prlsing: a self-propelled steerable vehicle having a frame; slasher means mounted on said frame, said slasher means comprislng a cradle that is oriented transversely to the length o~ said frame and is open at one end, a butt plate being positioned adjacent ~he opposite end of said cradle, and a circular saw heing positioned on said frame adjacent said open end of said cradle and being operable in ~;.
906~
a cutting plane perpendicular to the length of said cradle for cutting trees contained therein; and loading means on said frame for engaging the butt end of a felled tree and moving it longitudinally into said slasher means through sald open end of said cradle and into engagement with said butt plate; said mobile slasher keing adapted to be driven to a location adjacent the butt end of a felled tree, positioned with said cradle oriented generally longitudinally of the tree, and operated at that location in repeated cycles to cut the tree into predetermined lengths, such cut lengths being removed from said cradle by said loading means for subsequent handling.
The mobile slasher can be produced to include a combination of known machines. The basic component is a Timberjack ~TM) model TJ30 carrier, manufactured by Timberjack Inc. of Woodstock, Ontario, Canada. This comprises a chassiæ
; having four hydrostatically driven wheels, and which is steered in a conventional ~anner by `:
~ la ~ C
"bending" the chassis on a central pivot. Centrally of the chassis there is mounted a "Littlejohn" (TM) loader of a type manufactured hy Lakeshore Industrial, Two Harbors, Michigan, U.S.A., mounted on a pedestal so that it is elevated to provide the operator with a clear view of the terrain and the lumber to be processed. The loader arm is equipped with a grapple of a type also manufactured by Lakeshore Industrial. Transversely of one end of the chassis of the basic vehicle a slasher of known type is pivotally mounted, on a transverse axis and in the working position rests on the ground. A circular saw blade is disposed at one end of the slasher, and a hydraulically operable butt plate is disposed at the opposite end of the slasher. The vehicle can be driven up to a felled tree, and the grapple operated to grasp the tree, lift it into the slasher, abut it against the butt plate, position it by movement of the butt plate, whereafter the circular saw blade, which is mounted on an arm, is operated to cut the tree to length, whereafter it is removed from the slasher and placed either in a pile beside the machine or into a truck.
Operation of the machine is smooth and continuous and as mentioned above is carried out by one worker- The simplicity oE
the machine, and its mobility, enables it to cut felled trees into desired lengths at considerable speed.
BRIEF DESCRIPTION OF THE DR~WINGS
An embodiment of the invention is described below, with reference to the accompanying drawings, in which:
Figure 1 is a plan view of a machine manufactured according to the inventi7n:
- 2 _ -' ~ ~
~2g9~66 Figure 2 is a side elevation of the machine of Figure l;
and Figure 3 is a perspective view of the machine in opera-tion.
DETAILED DESCRIPTION OF A PREFERRED EMsoDIMENT
The basic vehicle 10 comprising a vehicle frame 11, that is in two sections pivoted together at 12. The frame 11 is supported on four wheels 13, preferably of substantial size. The wheels are driven by hydrosta-tic motors (not shown) in a manner known in the art, and steering of the vehicle is accomplished by operating the hydraulic cylinders 14 which pivot the frame at 12.
~ The cylinders 14 are shown in chain-link lines in Figure 2.
; Mounted on the forward end of the frame is a pedestal 15, and in turn there is mounted on the pedestal the "Littlejohn"
loader 21~ which comprises a pair of arms 16 and 17 operated by hydraulic cylinders and 18 and 1~ respectively. Disposed on the outer end of the second arm I7 is the hydraulically operated grapple 20. The loader unit 21 is capable of rotation on -the pedestal through 555. An operators cab 22 forms part of the loader; as can be seen from the drawings, the cab 22 is mounted high above the vehicle 10 so that the driver's view is unob-structed. Mounted on the front of the frame is a slasher 23 of known type, comprising a cradle 24 for receiving the logs, a butt plate 25 mounted on a telescopic arm 26 that is hydraulically movable, and a circular saw blade 27 mounted on an arm 28 both al~o hydraulically operated, to rctate abo~t an arc betw-en the .
`
~99~
withdrawn position shown in Figure 2 to the position shown in chain-link lines in Figure 2, which cuts through logs placed in the cradle 24. The prime mover used for driving the basic vehicle lO is also used in known manner to supply hydraulic fluid for all of the operations of the mobile slasher.
With respect to the slasher unit 23, it is pivoted at 29 and is raised and lowered by means oE hydraulic cylinders 30. It is shown in the raised, or road transport position, in chain-link lines in Figure 2. A detailed description of the slasher is not believed necessary, since it is of a type generally known in the art.
In operation, the vehicle is driven by conventional controls (not shown) by the operator in the cab. It can be driven directly up to a large felled tree to be cut. The operator then, manipulating controls for the arms 16 and 17 and the grapple 120, grasps the base of the tree, using the grapple 20, and lifts it transversely into the slasher 23. The butt plate is then moved to ensure that the tree trunk is appropriately positioned with respect to the saw blade, i.e., so that the desired length to be cut off by the saw blade is established. The saw blade 27 is then rotated toward the log by the operation of hydraulic means (not shown) that rotate the arm 28. The saw blade 27, which may be a 60 inch blade, then severs the tree at the desired point. The operator can then lift the severed length of the tree, using the grapple, and place it to the right or left of the machine or in a truck. The machine does not have to be moved again until the en-tire tree is processed.
_ ~ _ ., .. .~ - ~ , ' : ' .
1299~)6~
It should be understood that the machine i9 capable of picking up a number of smaller trees and simultaneously cutting them, within the limits afforded by -the size of -the saw blade.
; It will be noted that the loader 21 is equipped with two stabilizing feet 31, hydraulically operated, that can be extended at the opera-tor's discretion to e~tend diagonally a substantial distance to the side of the vehicle 16, ensuring stability in the event -that trees of substantial weight are being handled. With respect to bigger trees, less time and effort is expended because the operator can drive the machine so that the slasher is adjacent the trunk, raise the trunk of the tree and place the bottom of the trunk in the cradle of the slasher. There is therefore less ` weight to lift and less of a tendency for the machine to upset because it does not have to lift as heavy a weight in a poten-tially awkward position. Since the first cut that the slasher takes is the bottom of the tree, and because the slasher can easily be disposed directly adjacent the tree to be cut, the operator simply has to pick up the tree and does not have to drag its full weight. He simply lifts and positions it in the slasher bed, and cuts it. After the first cut, the tree is much lighter and from then on subsequent cuts can be made by pulling the tree in from the operator's left.
The above described machine, while relatively simple, and using known components, satisfies the requirements set forth at the beginning of this specification. Conventional slashers are low and can only be operated from existing bush road beds. They are not able to operate off-road because they have a low under-~: .
- - , . - .
9~0~6 carriage. They are also costly, and often required two operators.
The machine described above also is economical in operation because of the reduction of time spent moving through the bush; it can move with relative ease over stumps and through rough terrain while being towable on the highway at speeds of approximately 80 k/hr. It does not have to be "floated" to the work site, although it can be towed if necessary. Because the machine can be con-structed with an overall length of approximately 40 feet and a width of less than 12 feet, highway movement at relatively high speeds is feasible. The machine can carry sufficient fuel to operate through a number of shifts of work without having to return to a base camp to be refueled. In a test of the machine, it was found feasible to cut 8 cords of wood in a 15 minute period.
.
~2g9~66 Figure 2 is a side elevation of the machine of Figure l;
and Figure 3 is a perspective view of the machine in opera-tion.
DETAILED DESCRIPTION OF A PREFERRED EMsoDIMENT
The basic vehicle 10 comprising a vehicle frame 11, that is in two sections pivoted together at 12. The frame 11 is supported on four wheels 13, preferably of substantial size. The wheels are driven by hydrosta-tic motors (not shown) in a manner known in the art, and steering of the vehicle is accomplished by operating the hydraulic cylinders 14 which pivot the frame at 12.
~ The cylinders 14 are shown in chain-link lines in Figure 2.
; Mounted on the forward end of the frame is a pedestal 15, and in turn there is mounted on the pedestal the "Littlejohn"
loader 21~ which comprises a pair of arms 16 and 17 operated by hydraulic cylinders and 18 and 1~ respectively. Disposed on the outer end of the second arm I7 is the hydraulically operated grapple 20. The loader unit 21 is capable of rotation on -the pedestal through 555. An operators cab 22 forms part of the loader; as can be seen from the drawings, the cab 22 is mounted high above the vehicle 10 so that the driver's view is unob-structed. Mounted on the front of the frame is a slasher 23 of known type, comprising a cradle 24 for receiving the logs, a butt plate 25 mounted on a telescopic arm 26 that is hydraulically movable, and a circular saw blade 27 mounted on an arm 28 both al~o hydraulically operated, to rctate abo~t an arc betw-en the .
`
~99~
withdrawn position shown in Figure 2 to the position shown in chain-link lines in Figure 2, which cuts through logs placed in the cradle 24. The prime mover used for driving the basic vehicle lO is also used in known manner to supply hydraulic fluid for all of the operations of the mobile slasher.
With respect to the slasher unit 23, it is pivoted at 29 and is raised and lowered by means oE hydraulic cylinders 30. It is shown in the raised, or road transport position, in chain-link lines in Figure 2. A detailed description of the slasher is not believed necessary, since it is of a type generally known in the art.
In operation, the vehicle is driven by conventional controls (not shown) by the operator in the cab. It can be driven directly up to a large felled tree to be cut. The operator then, manipulating controls for the arms 16 and 17 and the grapple 120, grasps the base of the tree, using the grapple 20, and lifts it transversely into the slasher 23. The butt plate is then moved to ensure that the tree trunk is appropriately positioned with respect to the saw blade, i.e., so that the desired length to be cut off by the saw blade is established. The saw blade 27 is then rotated toward the log by the operation of hydraulic means (not shown) that rotate the arm 28. The saw blade 27, which may be a 60 inch blade, then severs the tree at the desired point. The operator can then lift the severed length of the tree, using the grapple, and place it to the right or left of the machine or in a truck. The machine does not have to be moved again until the en-tire tree is processed.
_ ~ _ ., .. .~ - ~ , ' : ' .
1299~)6~
It should be understood that the machine i9 capable of picking up a number of smaller trees and simultaneously cutting them, within the limits afforded by -the size of -the saw blade.
; It will be noted that the loader 21 is equipped with two stabilizing feet 31, hydraulically operated, that can be extended at the opera-tor's discretion to e~tend diagonally a substantial distance to the side of the vehicle 16, ensuring stability in the event -that trees of substantial weight are being handled. With respect to bigger trees, less time and effort is expended because the operator can drive the machine so that the slasher is adjacent the trunk, raise the trunk of the tree and place the bottom of the trunk in the cradle of the slasher. There is therefore less ` weight to lift and less of a tendency for the machine to upset because it does not have to lift as heavy a weight in a poten-tially awkward position. Since the first cut that the slasher takes is the bottom of the tree, and because the slasher can easily be disposed directly adjacent the tree to be cut, the operator simply has to pick up the tree and does not have to drag its full weight. He simply lifts and positions it in the slasher bed, and cuts it. After the first cut, the tree is much lighter and from then on subsequent cuts can be made by pulling the tree in from the operator's left.
The above described machine, while relatively simple, and using known components, satisfies the requirements set forth at the beginning of this specification. Conventional slashers are low and can only be operated from existing bush road beds. They are not able to operate off-road because they have a low under-~: .
- - , . - .
9~0~6 carriage. They are also costly, and often required two operators.
The machine described above also is economical in operation because of the reduction of time spent moving through the bush; it can move with relative ease over stumps and through rough terrain while being towable on the highway at speeds of approximately 80 k/hr. It does not have to be "floated" to the work site, although it can be towed if necessary. Because the machine can be con-structed with an overall length of approximately 40 feet and a width of less than 12 feet, highway movement at relatively high speeds is feasible. The machine can carry sufficient fuel to operate through a number of shifts of work without having to return to a base camp to be refueled. In a test of the machine, it was found feasible to cut 8 cords of wood in a 15 minute period.
.
Claims (10)
1. A mobile slasher comprising:
a self-propelled steerable vehicle having a frame;
slasher means mounted on said frame, said slasher means comprising a cradle that is oriented transversely to the length of said frame and is open at one end, a butt plate being positioned adjacent the opposite end of said cradle, and a circular saw being positioned on said frame adjacent said open end of said cradle and being operable in a cutting plane perpendicular to the length of said cradle for cutting trees contained therein; and loading means on said frame for engaging the butt end of a felled tree and moving it longitudinally into said slasher means through said open end of said cradle and into engagement with said butt plate;
said mobile slasher being adapted to be driven to a location adjacent the butt end of a felled tree, positioned with said cradle oriented generally longitudinally of the tree, and operated at that location in repeated cycles to cut the tree into predetermined lengths, such cut lengths being removed from said cradle by said loading means for subsequent handling.
a self-propelled steerable vehicle having a frame;
slasher means mounted on said frame, said slasher means comprising a cradle that is oriented transversely to the length of said frame and is open at one end, a butt plate being positioned adjacent the opposite end of said cradle, and a circular saw being positioned on said frame adjacent said open end of said cradle and being operable in a cutting plane perpendicular to the length of said cradle for cutting trees contained therein; and loading means on said frame for engaging the butt end of a felled tree and moving it longitudinally into said slasher means through said open end of said cradle and into engagement with said butt plate;
said mobile slasher being adapted to be driven to a location adjacent the butt end of a felled tree, positioned with said cradle oriented generally longitudinally of the tree, and operated at that location in repeated cycles to cut the tree into predetermined lengths, such cut lengths being removed from said cradle by said loading means for subsequent handling.
2. A mobile slasher according to claim 1 wherein said loading means comprises at least two arms that are pivoted together at adjoining ends, the other end of a first of said arms being pivotally mounted on a rotatable platform on said frame, the other end of a second of said arms carrying a grapple for engaging trees to be loaded in and unloaded from said cradle.
3. A mobile slasher according to claim 1 wherein said butt plate is adjustable longitudinally of said cradle so that the distance between said butt plate and said cutting plane of said circular saw can be adjusted.
4. A mobile slasher according to claim 1 wherein said cradle is pivotally mounted on a transverse axis on said frame, actuator means being connected between said frame and said cradle for effecting movement of said cradle between a lowered operating position and a raised transport position.
5. A mobile slasher according to any one of claims 1 to 4 wherein said loading means comprises a hydraulically operated articulated boom means pivotally mounted at one end on a rotatable platform carried on said frame and having a grapple at its other end for engaging trees to be moved into said cradle and for removing sawed tree lengths from said cradle.
6. A mobile slasher according to any one of claims 1 to 4 wherein operation of the vehicle, of the slasher means, and of the loading means are controlled from a single operators station positioned on said frame.
7. A mobile slasher according to any one of claims 1 to 4 wherein said circular saw is carried on an arm that is pivotally mounted on an axis at right angles to said cutting plane of said saw, such that said saw can be swung clear of said one open end of said cradle to permit movement of a tree therethrough.
8. A mobile slasher according to any one of claims 1 to 4 wherein said circular saw is carried on an arm that is pivotally mounted on an axis at right angles to said cutting plane of said saw, such that said saw can be swung clear of said one open end of said cradle to permit movement of a tree therethrough; said butt plate being adjustable longitudinally of said cradle so that the distance between said butt plate and said cutting plane of said saw can be adjusted.
9. A mobile slasher according to any one of claims 1 to 4 wherein said circular saw is carried on an arm that is pivotally mounted on an axis at right angles to said cutting plane of said saw, such that said saw can be swung clear of said one open end of said cradle to permit movement of a tree therethrough; said butt plate being adjustable longitudinally of said cradle so that the distance between said butt plate and said cutting plane of said saw can be adjusted; said loading means comprising a hydraulically operated articulated boom that is pivotally mounted at one end on a rotatable platform carried on said frame, and at its other end carrying a grapple for engaging and moving trees and tree sections relative to said cradle.
10. A mobile slasher comprising a self-propelled, all-terrain vehicle having a frame formed by two articulated frame sections, steering of the vehicle being effected by articulating movement between said frame sections; loading means comprising a rotatable platform mounted on one of said frame sections, hydraulically operated boom means being mounted on said platform and having a grapple at a distal end thereof; slasher means comprising a cradle mounted at one end of said one frame section and oriented transversely to the length thereof, one end of said cradle being open, and a butt plate being positioned adjacent the opposite end of said cradle; a circular saw carried on a hydraulically controlled arm pivotally mounted on said frame, said saw being movable in a cutting plane at said one end of said cradle perpendicular to the length of said cradle; operation of said vehicle, said loading means, and said saw all being controlled from a single operators station positioned on said one frame section; the arrangement being such that said mobile slasher can be driven to a location adjacent the butt end of a felled tree, positioned with said cradle oriented generally longitudinally of the tree, and operated in repeated cycles at that location to cut the tree into predetermined lengths.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 536569 CA1299066C (en) | 1987-05-07 | 1987-05-07 | Slasher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 536569 CA1299066C (en) | 1987-05-07 | 1987-05-07 | Slasher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1299066C true CA1299066C (en) | 1992-04-21 |
Family
ID=4135602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 536569 Expired CA1299066C (en) | 1987-05-07 | 1987-05-07 | Slasher |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1299066C (en) |
-
1987
- 1987-05-07 CA CA 536569 patent/CA1299066C/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |