CA1155311A - Bulldozer and backhoe lock device - Google Patents
Bulldozer and backhoe lock deviceInfo
- Publication number
- CA1155311A CA1155311A CA000379319A CA379319A CA1155311A CA 1155311 A CA1155311 A CA 1155311A CA 000379319 A CA000379319 A CA 000379319A CA 379319 A CA379319 A CA 379319A CA 1155311 A CA1155311 A CA 1155311A
- Authority
- CA
- Canada
- Prior art keywords
- sleeve halves
- sleeve
- oppositely disposed
- locking device
- locking
- 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
Landscapes
- Component Parts Of Construction Machinery (AREA)
Abstract
ABSTRACT
A bulldozer and backhoe locking device for preventing the theft of heavy equipment having hydraulic piston and cylinder assemblies by holding an Implement thereof In an extended position and comprising a cylindrical sleeve of a length to fit the piston rod of the piston and cylinder assembly in its extended position, the cylindrical sleeve consisting of a pair of sleeve halves having oppositely disposed longitudinally extending meeting edges, half circular portions and an annular flange on one end of the sleeve halves of a diameter greater than the diameter of the cylinder of the piston and cylinder assembly, the sleeve halves being hinged together and having means for locking the sleeve halves together.
A bulldozer and backhoe locking device for preventing the theft of heavy equipment having hydraulic piston and cylinder assemblies by holding an Implement thereof In an extended position and comprising a cylindrical sleeve of a length to fit the piston rod of the piston and cylinder assembly in its extended position, the cylindrical sleeve consisting of a pair of sleeve halves having oppositely disposed longitudinally extending meeting edges, half circular portions and an annular flange on one end of the sleeve halves of a diameter greater than the diameter of the cylinder of the piston and cylinder assembly, the sleeve halves being hinged together and having means for locking the sleeve halves together.
Description
Background of the Invention (l) Field of the Invention:
This invention relates to locking devices for use on equipment havTng hydraulic pistons and cylinders such as bulldozers and back hoes or the like.
This invention relates to locking devices for use on equipment havTng hydraulic pistons and cylinders such as bulldozers and back hoes or the like.
(2) Description of the Prior Art:
Prior art devices have used a number of different safety supports for holding dump truck beds in up position. See forexample U.S. 3,813,124 of May 28, 1974 to D.H. Roland, 3,157;435 of Nov. 17, 1964 to V. H. Sherven and 3,135,555 of June 2,.1964 to E. MeCaskey.
In U.S. Patent 3,813,124 a safety prop for dump trucks is shown wherein an elongated tubular member is pivotally secured at one end between the truck bed and the truck frame thereby locking the truck bed in extended or up position.
In U.S. Patent 3,157,435 a safety prop for dump trucks is shown having a sprtng loaded telescopically extensible tubular member positioned between the frame and the bottom of the dump bed.
In U.S. Patent 3,135,555 a safety guard is disclosed wherein a tube is positioned around the rod of a hydraulic piston and cylinder 20 preventing the dump truck bed from falling from the up position while the truck is being worked on.
In applicant's device a split cylindrical sleeve having an annular flange at one end and a pair of outwardly extending arms at the other is positioned over the extended rod portion of a hydraulic piston and cylinder assembly on the bottom of a back hoe attachment or like equip-ment to prevent the raising of the same from engagement with the ground thereby preventing movement of the tractor.
28 Description of the Drawings
Prior art devices have used a number of different safety supports for holding dump truck beds in up position. See forexample U.S. 3,813,124 of May 28, 1974 to D.H. Roland, 3,157;435 of Nov. 17, 1964 to V. H. Sherven and 3,135,555 of June 2,.1964 to E. MeCaskey.
In U.S. Patent 3,813,124 a safety prop for dump trucks is shown wherein an elongated tubular member is pivotally secured at one end between the truck bed and the truck frame thereby locking the truck bed in extended or up position.
In U.S. Patent 3,157,435 a safety prop for dump trucks is shown having a sprtng loaded telescopically extensible tubular member positioned between the frame and the bottom of the dump bed.
In U.S. Patent 3,135,555 a safety guard is disclosed wherein a tube is positioned around the rod of a hydraulic piston and cylinder 20 preventing the dump truck bed from falling from the up position while the truck is being worked on.
In applicant's device a split cylindrical sleeve having an annular flange at one end and a pair of outwardly extending arms at the other is positioned over the extended rod portion of a hydraulic piston and cylinder assembly on the bottom of a back hoe attachment or like equip-ment to prevent the raising of the same from engagement with the ground thereby preventing movement of the tractor.
28 Description of the Drawings
-3-11S~311 Figure 1 is a top plan view of the lock device;
Figure 2 is a cross sectional view on lines 2-2 of Figure 1;
Figure 3 is a detailed elevation on line 3-3 of Figure 2;
Figure 4 7s a side elevation of a back hoe equipped tractor and illustrating the device;
Figure 5 is a side elevation of a portion of a bulldozer illustra-ting the device; and Figure 6 is a perspective view of the lock device in partially opened position.
Summary of the Invention A bulldozer and backhoe locking device comprises a split elongated cylindrical sleeve pivoted together along its one edge and having an annular flange at one end and a pair of arms extending beyond the other end thereof. The locking device has apertured lugs to secure the same over the extended rod portlon of a hydraulic plston and cyllnder assembly on the blade or boom-portion of the equipment thereby preventing the moving of the equipment.
Description of the Preferred Embodiment A bulldozer and backhoe locking device comprising a split cylindrica1 sleeve 10 as will be seen in Figures 1 and 6 of the drawings has equal half sections 11 and 12 with a pair of pivot hinges 13 therebetween one of which is seen in Figures 2 and 3 of the drawings. Each of said hinges 13 comprises a pair of offset L-shaped extensions 14 and 15. A pin 16 is positioned through an aperture in said extension 15 and into a bore in said extension 14. The end of said pin 16 ts secured in said aperture as by welding. Pairsof apertured lugs 17 and 18 extend from and are secured to each of said ha1f sections 11 and 12 of said split cylindrical sleeve 10 opposlte the hinges 13 as seen in Flgures 1 2 and 6 of the drawings.
The pairs of lugs 17 and 18 are apertured for p1acement of padlocks (not shown) therethrough.
Referring to FTgures l and 6 of the drawings, two half circular parts 19 of an annular flange are formed on one end of said half sections 11 and 12 of satd split cylindrical sleeve 10 while a pair of oppositely dis-posed outwardly extending arms 20 and 21 are secured adjacent the other end of said split cylindrical sleeve 10. Each of said arms 20 and 21 have a first portion 22 secured to said half sections 11 and 12 respectively as by we1ding and an intermediate portion 23 extends outwardly therefrom on an angle and an end portion 24 in coplanar relation to said first portion extending beyond the end of said split cylindrical sleeve lO.
Referring now to Figure 4 of the drawings, a backhoe attachment 25 is positioned on a tractor 26 having a pair of booms 27 and 2~, hydraulic plston and cyltnder assemblles 29 and 30 and a bucket 31 pivotally secured to one another.
In Figure 5 of the drawings, a portion of a bulldozer 32 is shown having a blade 33 pivotally secured to said bulldozer and a hydraulic piston and cyli~der assembly 34 pivotal1y engaged thereon.
To use the locking device lO in the backhoe 25, the hydraulic cylinder 29 is fully extended exposing the rod portion R. The split cylindrical sleeve 10 is opened, placed around the rod portion R and closed locking the rod R in extended position with the annular flange 19 in abutment with the end of the piston and cylTnder assembly 29 providing distribution of force to the outer wall of the piston and cylinder assembly 29, engagement of the opposite end of the split cylIndrical sleeve with the boom 27. The arms 20 and 21 cover a pivot pin connecting 23 the rod R wlth the boom 27 thereby preventing removal of the pin. The inner surface of the split cylindrical sleeve 10 is preferably coated with a siippery material SUCIl as TEFLON*as indicated in Figure 6 of thc drawings by the letter T. (Tetrafluoroethene homopolymer).
It will thus be seen that with the lockin~ device in place the boom 27 and the bucket 30 cannot be raised from en~agement with the ground and thereby prevents the tractor 26 from being moved. T use the locking device on the bul;dozer 32 as seen in Figure 5 of the drawings, the hydraulic piston and cylinder assembly 34 is extended forcing the blade 33 against the ground. The split cylindrical sleeve 10 is opened and placed around the rod R of the hydraulic piston and cylinder assembly 34 to hold the rod R in extended position and the blade 33 in ground engaging position. With the blade in engagement with the ground, the bulldozer 32 cannot be moved thus effectively securing the e4uipment against un-au~horized removal. Since the bulIdozer and backhoe and like equipment have no effective locking means, thelocking device 10 of the above described invention can greatly reduce the theft of such equipment without having to modify the equipment in any way.
Additional'ly, the locking device can be used on any manufacturer's equipment that has comparable hydraulic piston and cylinder assemblies.
The only modification required of the device is to increase or decrease the overall length and/or diameter to suit the different hyd~raulic piston and cylinder assemblies to which the device is applied.
It will thus be seen that a new and useful locking device for bulIdozers and backhoes or the like has been illustrated and described and it will occur to those skilled in the art that various changes and modifications may be made therein wit,hout departing from the spirit of the invention and having thus described my invention what I
28 claim is:
* TEFLON is a registered trademark.
,
Figure 2 is a cross sectional view on lines 2-2 of Figure 1;
Figure 3 is a detailed elevation on line 3-3 of Figure 2;
Figure 4 7s a side elevation of a back hoe equipped tractor and illustrating the device;
Figure 5 is a side elevation of a portion of a bulldozer illustra-ting the device; and Figure 6 is a perspective view of the lock device in partially opened position.
Summary of the Invention A bulldozer and backhoe locking device comprises a split elongated cylindrical sleeve pivoted together along its one edge and having an annular flange at one end and a pair of arms extending beyond the other end thereof. The locking device has apertured lugs to secure the same over the extended rod portlon of a hydraulic plston and cyllnder assembly on the blade or boom-portion of the equipment thereby preventing the moving of the equipment.
Description of the Preferred Embodiment A bulldozer and backhoe locking device comprising a split cylindrica1 sleeve 10 as will be seen in Figures 1 and 6 of the drawings has equal half sections 11 and 12 with a pair of pivot hinges 13 therebetween one of which is seen in Figures 2 and 3 of the drawings. Each of said hinges 13 comprises a pair of offset L-shaped extensions 14 and 15. A pin 16 is positioned through an aperture in said extension 15 and into a bore in said extension 14. The end of said pin 16 ts secured in said aperture as by welding. Pairsof apertured lugs 17 and 18 extend from and are secured to each of said ha1f sections 11 and 12 of said split cylindrical sleeve 10 opposlte the hinges 13 as seen in Flgures 1 2 and 6 of the drawings.
The pairs of lugs 17 and 18 are apertured for p1acement of padlocks (not shown) therethrough.
Referring to FTgures l and 6 of the drawings, two half circular parts 19 of an annular flange are formed on one end of said half sections 11 and 12 of satd split cylindrical sleeve 10 while a pair of oppositely dis-posed outwardly extending arms 20 and 21 are secured adjacent the other end of said split cylindrical sleeve 10. Each of said arms 20 and 21 have a first portion 22 secured to said half sections 11 and 12 respectively as by we1ding and an intermediate portion 23 extends outwardly therefrom on an angle and an end portion 24 in coplanar relation to said first portion extending beyond the end of said split cylindrical sleeve lO.
Referring now to Figure 4 of the drawings, a backhoe attachment 25 is positioned on a tractor 26 having a pair of booms 27 and 2~, hydraulic plston and cyltnder assemblles 29 and 30 and a bucket 31 pivotally secured to one another.
In Figure 5 of the drawings, a portion of a bulldozer 32 is shown having a blade 33 pivotally secured to said bulldozer and a hydraulic piston and cyli~der assembly 34 pivotal1y engaged thereon.
To use the locking device lO in the backhoe 25, the hydraulic cylinder 29 is fully extended exposing the rod portion R. The split cylindrical sleeve 10 is opened, placed around the rod portion R and closed locking the rod R in extended position with the annular flange 19 in abutment with the end of the piston and cylTnder assembly 29 providing distribution of force to the outer wall of the piston and cylinder assembly 29, engagement of the opposite end of the split cylIndrical sleeve with the boom 27. The arms 20 and 21 cover a pivot pin connecting 23 the rod R wlth the boom 27 thereby preventing removal of the pin. The inner surface of the split cylindrical sleeve 10 is preferably coated with a siippery material SUCIl as TEFLON*as indicated in Figure 6 of thc drawings by the letter T. (Tetrafluoroethene homopolymer).
It will thus be seen that with the lockin~ device in place the boom 27 and the bucket 30 cannot be raised from en~agement with the ground and thereby prevents the tractor 26 from being moved. T use the locking device on the bul;dozer 32 as seen in Figure 5 of the drawings, the hydraulic piston and cylinder assembly 34 is extended forcing the blade 33 against the ground. The split cylindrical sleeve 10 is opened and placed around the rod R of the hydraulic piston and cylinder assembly 34 to hold the rod R in extended position and the blade 33 in ground engaging position. With the blade in engagement with the ground, the bulldozer 32 cannot be moved thus effectively securing the e4uipment against un-au~horized removal. Since the bulIdozer and backhoe and like equipment have no effective locking means, thelocking device 10 of the above described invention can greatly reduce the theft of such equipment without having to modify the equipment in any way.
Additional'ly, the locking device can be used on any manufacturer's equipment that has comparable hydraulic piston and cylinder assemblies.
The only modification required of the device is to increase or decrease the overall length and/or diameter to suit the different hyd~raulic piston and cylinder assemblies to which the device is applied.
It will thus be seen that a new and useful locking device for bulIdozers and backhoes or the like has been illustrated and described and it will occur to those skilled in the art that various changes and modifications may be made therein wit,hout departing from the spirit of the invention and having thus described my invention what I
28 claim is:
* TEFLON is a registered trademark.
,
Claims (5)
1. A locking device for use on a piston rod of a hydraulic piston and cylinder assembly of a bulldozer, tractor, backhoe, and the like arranged to hold an implement thereof in an extended position and comprising a cylindrical sleeve of a length to fit said piston rod in its extended position, said cylindrical sleeve consisting of a pair of sleeve halves having oppositely disposed longitudinally extending meeting edges, half circular portions of an annular flange on one end of said sleeve halves of a diameter greater than the diameter of the cylinder of said piston and cylinder assembly, means hinging said sleeve halves to one another and secondary means for locking said sleeve halves to one another, oppositely disposed outwardly extending arms on the other end of said cylindrical sleeve arranged to cover pivoted portions of said bulldozer, tractor, backhoe and the like.
2. The locking device of Claim 1 wherein said means hinging said sleeve halves to one another comprises registering pairs of L-shaped apertured extensions attached to said sleeve halves along one pair of said oppositely disposed longitudinally extending meeting edges.
3. The locking device of Claim 1 wherein said means for locking said sleeve halves together comprises registering pairs of apertured lugs secured to said sleeve halves along one pair of said oppositely disposed longitudinally extending meeting edges.
4. The locking device set forth in Claim 2 wherein said means for locking said sleeve halves together comprises registering pairs of apertured lugs secured to said sleeve halves along the other pair of oppositely disposed longitudinally extending meeting edges.
5. The locking device of Claim 1 wherein said oppositely disposed outwarding extending arms are offset in relation to said sleeve halves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000379319A CA1155311A (en) | 1981-06-09 | 1981-06-09 | Bulldozer and backhoe lock device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000379319A CA1155311A (en) | 1981-06-09 | 1981-06-09 | Bulldozer and backhoe lock device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1155311A true CA1155311A (en) | 1983-10-18 |
Family
ID=4120181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000379319A Expired CA1155311A (en) | 1981-06-09 | 1981-06-09 | Bulldozer and backhoe lock device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1155311A (en) |
-
1981
- 1981-06-09 CA CA000379319A patent/CA1155311A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |