CA2226593A1 - One arm lift - Google Patents
One arm lift Download PDFInfo
- Publication number
- CA2226593A1 CA2226593A1 CA 2226593 CA2226593A CA2226593A1 CA 2226593 A1 CA2226593 A1 CA 2226593A1 CA 2226593 CA2226593 CA 2226593 CA 2226593 A CA2226593 A CA 2226593A CA 2226593 A1 CA2226593 A1 CA 2226593A1
- Authority
- CA
- Canada
- Prior art keywords
- boat
- rotary shaft
- lift
- pivot
- legs
- 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
- 230000005484 gravity Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000000284 resting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/06—Vehicles adapted to transport, to carry or to comprise special loads or objects for carrying vehicles
- B60P3/10—Vehicles adapted to transport, to carry or to comprise special loads or objects for carrying vehicles for carrying boats
- B60P3/1008—Vehicles adapted to transport, to carry or to comprise special loads or objects for carrying vehicles for carrying boats on the vehicle roof
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Tents Or Canopies (AREA)
Abstract
This is a device to assist the loading of a light boat (canoe) onto the top of a vehicle by only one person. In this invention four attachable legs are pushed into the bottom lift tube base thus supporting the lift tubes in the vertical position. The height of the stand is adjustable by placing the height adjust pin into the desired through hole.
Once adjusted the rotary shaft is moved to its horizontal position, protruding out towards the side.
Separately, the boat plate is firmly fixed to one end of the boat by the use of a strap and buckle. With the use of your hands, you rotate the boat on the ground to its side, then lift the boat until the connect pin falls into the hole on the rotary shaft. Once in, a clip is used to secure the boat plate to the stand. The user then moves to the side of the boat and lifts and rotates it upwards until the lock collar falls into its locking position.
The boat is now firmly anchored in the top position. Now the unsupported end can be lifted and rotated over the top of the vehicle by the use of one person. Once on the top of the vehicle, the stand and boat plate can easily be removed and disassembled for easy transport.
Once adjusted the rotary shaft is moved to its horizontal position, protruding out towards the side.
Separately, the boat plate is firmly fixed to one end of the boat by the use of a strap and buckle. With the use of your hands, you rotate the boat on the ground to its side, then lift the boat until the connect pin falls into the hole on the rotary shaft. Once in, a clip is used to secure the boat plate to the stand. The user then moves to the side of the boat and lifts and rotates it upwards until the lock collar falls into its locking position.
The boat is now firmly anchored in the top position. Now the unsupported end can be lifted and rotated over the top of the vehicle by the use of one person. Once on the top of the vehicle, the stand and boat plate can easily be removed and disassembled for easy transport.
Description
SPECIFICATION
This invention is a portable, folding boat lift stand in which allows you to attach a boat easily to it, and to use it as a second person. This invention eliminates the need for a second person to load or to remove from the roof of a vehicle a boat while reducing any possible damage to the vehicle.
People over the years have thought up different ways or tricks to load a boat onto the top of a vehicle all by themselves. Some have tried tying a canoe onto a tree while driving under it. Others have placed one end of the canoe up onto the roof rack, while leaving the other end on the ground, then lifting the grounded end up and pushing the canoe over the roof rack forward over the vehicle. This method can only be done if you can lift the canoe up in the first place, and if you have a roof rack at the back of the roof.
There have been many tricks tried and a lot of damaged vehicles. To do a good safe job you should have two people to do it. Even loading to a high level, such as a van, is dangerous with two people because of the tendency for the canoe to roll over in this upside down position.
Today it is common for a canoeist going alone to ask for help when placing or removing their canoe. The problem is that many times you want to be alone and there is no one around to help and/or they may not have the time when you would like them to help.
I have found with this invention, most of these previous problems have been solved. Here are some advantages with this new invention. You only have to be one person to load or to unload your boat; the boat will not roll to the side even in a high reach position. you do not require a roof rack, extra ropes or equipment, and this invention assembles very quickly and can easily be stored in a vehicle.
The objects and features of the invention will be more fully understood and appreciated from the following detailed descriptions and drawings. (please note that this invention could be used for other kinds of boats. I have shown and used a canoe for reference only.) - Figure 1 is a general side view of the invention.
- Figure 2 shows how the canoe is attached to the ONE ARM LIFT. It also shows the side view of the lift components.
- Figure 2A shows the top view of the lift head in the canoe mounting position.
- Figure 3 shows the canoe rotated in the up wards position along with all of its components.
- Figure 4A,B,C. shows a possible variation of the lift head and how it works.
- Figure S shows a different bottom tube configuration incorporating folding legs that can fold up for storage, and down for use.
- Figure 6 shows a top view of a typical mounting position of a canoe on top of the ONE ARM LIFT along with a van and person location.
- Figure 7 shows the sequence of a person after rotating the canoe to its upside down position, pivoting the canoe around a radius towards the end of the van.
- Figure 8 shows a side view of the canoe attached to the ONE ARM LIFT, being supported over the van.
- Figure 9 shows a top view of figure 8 with the person holding the end of the canoe.
- Figure 10 shows the ONE ARM LIFT in its collapse position with its four legs in its storage position.
This invention is a portable, folding boat lift stand in which allows you to attach a boat easily to it, and to use it as a second person. This invention eliminates the need for a second person to load or to remove from the roof of a vehicle a boat while reducing any possible damage to the vehicle.
People over the years have thought up different ways or tricks to load a boat onto the top of a vehicle all by themselves. Some have tried tying a canoe onto a tree while driving under it. Others have placed one end of the canoe up onto the roof rack, while leaving the other end on the ground, then lifting the grounded end up and pushing the canoe over the roof rack forward over the vehicle. This method can only be done if you can lift the canoe up in the first place, and if you have a roof rack at the back of the roof.
There have been many tricks tried and a lot of damaged vehicles. To do a good safe job you should have two people to do it. Even loading to a high level, such as a van, is dangerous with two people because of the tendency for the canoe to roll over in this upside down position.
Today it is common for a canoeist going alone to ask for help when placing or removing their canoe. The problem is that many times you want to be alone and there is no one around to help and/or they may not have the time when you would like them to help.
I have found with this invention, most of these previous problems have been solved. Here are some advantages with this new invention. You only have to be one person to load or to unload your boat; the boat will not roll to the side even in a high reach position. you do not require a roof rack, extra ropes or equipment, and this invention assembles very quickly and can easily be stored in a vehicle.
The objects and features of the invention will be more fully understood and appreciated from the following detailed descriptions and drawings. (please note that this invention could be used for other kinds of boats. I have shown and used a canoe for reference only.) - Figure 1 is a general side view of the invention.
- Figure 2 shows how the canoe is attached to the ONE ARM LIFT. It also shows the side view of the lift components.
- Figure 2A shows the top view of the lift head in the canoe mounting position.
- Figure 3 shows the canoe rotated in the up wards position along with all of its components.
- Figure 4A,B,C. shows a possible variation of the lift head and how it works.
- Figure S shows a different bottom tube configuration incorporating folding legs that can fold up for storage, and down for use.
- Figure 6 shows a top view of a typical mounting position of a canoe on top of the ONE ARM LIFT along with a van and person location.
- Figure 7 shows the sequence of a person after rotating the canoe to its upside down position, pivoting the canoe around a radius towards the end of the van.
- Figure 8 shows a side view of the canoe attached to the ONE ARM LIFT, being supported over the van.
- Figure 9 shows a top view of figure 8 with the person holding the end of the canoe.
- Figure 10 shows the ONE ARM LIFT in its collapse position with its four legs in its storage position.
Figure 1 shows the complete side view of the ONE ARM LIFT. It is made up of four tubular legs 14 protruding from the center axis of the bottom lift tube 13, equally spaced, projecting downwards on a slight angle. This slope downwards angle gives the legs better ground friction and also helps in compensating for uneven ground conditions.
These legs 14 slide into the tube base by hand for easy assembly.
The bottom lift tube 13 is rigidly attached to the tube base and extends vertically upwards. Inside the bottom lift tube 13, the top lift tube 11 can slide freely. The height adjust pin 12 is used to adjust the top lift tube 11 vertically for different vertical heights.
There are several holes in the top lift tube 11 for different height selections. Simply align up the holes in the bottom lift tube 13 with tube 11 and press the height adjust pin 12 through. This locks the two lift tubes 11 & 13 together creating a rigid assembly.
The lift head 10 is fixed to the top of the lift tube 11. The rotary shaft 6 is shown in the vertical position with the boat plate 3 attached to it. The canoe is shown as reference only. Any light boat can be used.
Figure 2 shows the top position of the ONE ARM LIFT. It shows how the boat plate 3 attaches to the rotary shaft 6. On the ground the boat plate 3, along with the strap 2 are fixed by the buckle 1 to one end of the canoe firmly. The rotary shaft 6 and lock collar 7 are rotated horizontally as shown. The hole 20 in the rotary shaft 6 is then rotated to a vertical position. By using your hands, you then roll the canoe onto its side at the end where the boat plate 3 is fastened onto. You then lift the canoe maintaining the side orientation and aligning the connect pin 4 over the hole 20, then drop it through. Once through, release the canoe and place the clip 5 into the hole in the connect pin 4.
The rotary shaft 6 is free to rotate 360 degrees inside of the pivot tube 8.
The two pivot pins 9 located on both sides of the lift head 10 are fixed, and extend through the pivot tube 8 and in to the cavity of the rotary shaft 6. There is a clearance between the pivot pins 9 and the tube 8, thus allowing the pivot tube 8 to rotate around the center axis of the pivot pins 9. The rotary shaft 6, with clearance is free to rotate inside of the pivot tube 8.
With the pivot pins 9 extending into the cavity of the rotary shaft 6, it in turn prevents the rotary shaft 6 from pulling out. There is a shoulder on the rotary shaft 6 to prevent any movement along its length towards the center of the lift head 10.
The lock collar 7 has a minimum clearance hole through its center to allow it to slide freely over the rotary shaft 6.
These legs 14 slide into the tube base by hand for easy assembly.
The bottom lift tube 13 is rigidly attached to the tube base and extends vertically upwards. Inside the bottom lift tube 13, the top lift tube 11 can slide freely. The height adjust pin 12 is used to adjust the top lift tube 11 vertically for different vertical heights.
There are several holes in the top lift tube 11 for different height selections. Simply align up the holes in the bottom lift tube 13 with tube 11 and press the height adjust pin 12 through. This locks the two lift tubes 11 & 13 together creating a rigid assembly.
The lift head 10 is fixed to the top of the lift tube 11. The rotary shaft 6 is shown in the vertical position with the boat plate 3 attached to it. The canoe is shown as reference only. Any light boat can be used.
Figure 2 shows the top position of the ONE ARM LIFT. It shows how the boat plate 3 attaches to the rotary shaft 6. On the ground the boat plate 3, along with the strap 2 are fixed by the buckle 1 to one end of the canoe firmly. The rotary shaft 6 and lock collar 7 are rotated horizontally as shown. The hole 20 in the rotary shaft 6 is then rotated to a vertical position. By using your hands, you then roll the canoe onto its side at the end where the boat plate 3 is fastened onto. You then lift the canoe maintaining the side orientation and aligning the connect pin 4 over the hole 20, then drop it through. Once through, release the canoe and place the clip 5 into the hole in the connect pin 4.
The rotary shaft 6 is free to rotate 360 degrees inside of the pivot tube 8.
The two pivot pins 9 located on both sides of the lift head 10 are fixed, and extend through the pivot tube 8 and in to the cavity of the rotary shaft 6. There is a clearance between the pivot pins 9 and the tube 8, thus allowing the pivot tube 8 to rotate around the center axis of the pivot pins 9. The rotary shaft 6, with clearance is free to rotate inside of the pivot tube 8.
With the pivot pins 9 extending into the cavity of the rotary shaft 6, it in turn prevents the rotary shaft 6 from pulling out. There is a shoulder on the rotary shaft 6 to prevent any movement along its length towards the center of the lift head 10.
The lock collar 7 has a minimum clearance hole through its center to allow it to slide freely over the rotary shaft 6.
Figure 2 as shown has the pivot tube 8 resting, supporting the weight of the canoe on the shoulder 22. Shoulder 22 acts as a positive stop.
Figure 2A shows a top view of figure 2, indicating the orientation of the two pivot pins 9 with the rotary shaft 6 cavity.
Figure 3 shows the orientation of the lift head 10 once rotated 90 degrees.
Once the boat plate 3 is fastened onto the rotary shaft 6 by the clip S, the operator then moves to the outside of the canoe and rotates it upwards.
The rotary shaft 6 will pivot around the center axis of the pivot pins 9. The lock collar 7 will follow the outside contour of the lift head 10 while sliding on the rotary shaft 6.
Once the rotary shaft 6 is in the vertical position, the lock collar 7 will fall downwards due to gravity into a bored recess 21 on the centerline of the lift head 10.
When it falls down, it then prevents the rotary shaft 6 from moving in any direction. Also when the rotary shaft 6 is in the vertical position, the pivot tube 8 contacts the vertical shoulder 22, thus acting as a stop.
With the ONE ARM LIFT in this position, the weight of the canoe is passed through the boat plate 3, through the connect pin 4 and down the centerline of the rotary shaft 6. The rotary shaft 6 shoulder presses on to the top of the pivot tube 8 in which in turn loads the two pivot pins 9. In this state the rotary shaft 6 can freely rotate along its center axis.
Also, the boat plate 3 can rotate only along the connector pins axis. All this means the far end of the canoe can be lifted upwards and rotated around the center axis of the rotary shaft 6. This set up prevents the canoe from rolling from side to side. The boat plate 3 and the canoe centerline are in line with each other as shown. This centerline is slightly offset to the centerline of the rotary shaft 6. By being so, the canoe weight is slightly maintaining a side load on the pivot tube 8 onto the shoulder 22.
If desired, the boat plate 3 could be rotated back to its vertical position by simply lifting upwards the lock collar 7 until it clears the recess 21. Then rotate the rotary shaft 6 over the center axis of the pivot pins 9 until the side of the pivot tube 8 comes in to contact with the horizontal shoulder 22.
FIGURE 4A.B.C
This figure shows another method of locking the rotary shaft into position.
This system uses the same logic of figure 3 but the rotary shaft 19 has a shoulder on the bottom end of the shaft to prevent it from sliding out of the pivot tube 18. The pivot pins 9 supports the pivot tube 18 as in figure 3, but does not extend in to the rotary shaft 19.
By doing so, there is no lock collar 7.
Figure 2A shows a top view of figure 2, indicating the orientation of the two pivot pins 9 with the rotary shaft 6 cavity.
Figure 3 shows the orientation of the lift head 10 once rotated 90 degrees.
Once the boat plate 3 is fastened onto the rotary shaft 6 by the clip S, the operator then moves to the outside of the canoe and rotates it upwards.
The rotary shaft 6 will pivot around the center axis of the pivot pins 9. The lock collar 7 will follow the outside contour of the lift head 10 while sliding on the rotary shaft 6.
Once the rotary shaft 6 is in the vertical position, the lock collar 7 will fall downwards due to gravity into a bored recess 21 on the centerline of the lift head 10.
When it falls down, it then prevents the rotary shaft 6 from moving in any direction. Also when the rotary shaft 6 is in the vertical position, the pivot tube 8 contacts the vertical shoulder 22, thus acting as a stop.
With the ONE ARM LIFT in this position, the weight of the canoe is passed through the boat plate 3, through the connect pin 4 and down the centerline of the rotary shaft 6. The rotary shaft 6 shoulder presses on to the top of the pivot tube 8 in which in turn loads the two pivot pins 9. In this state the rotary shaft 6 can freely rotate along its center axis.
Also, the boat plate 3 can rotate only along the connector pins axis. All this means the far end of the canoe can be lifted upwards and rotated around the center axis of the rotary shaft 6. This set up prevents the canoe from rolling from side to side. The boat plate 3 and the canoe centerline are in line with each other as shown. This centerline is slightly offset to the centerline of the rotary shaft 6. By being so, the canoe weight is slightly maintaining a side load on the pivot tube 8 onto the shoulder 22.
If desired, the boat plate 3 could be rotated back to its vertical position by simply lifting upwards the lock collar 7 until it clears the recess 21. Then rotate the rotary shaft 6 over the center axis of the pivot pins 9 until the side of the pivot tube 8 comes in to contact with the horizontal shoulder 22.
FIGURE 4A.B.C
This figure shows another method of locking the rotary shaft into position.
This system uses the same logic of figure 3 but the rotary shaft 19 has a shoulder on the bottom end of the shaft to prevent it from sliding out of the pivot tube 18. The pivot pins 9 supports the pivot tube 18 as in figure 3, but does not extend in to the rotary shaft 19.
By doing so, there is no lock collar 7.
When the canoe is rotated upwards, the rotary shaft 19, captured between its shoulder and the lift head 17, falls downwards following the profile of the lift head 17.
Gravity is always pushing the rotary shaft head 23 downwards until it aligns over the lift head cavity 24. The rotary shaft 19 then falls downward in to the bottom of the lift head cavity 24. In this position no side movement of the rotary shaft 19 can happen. Only rotation along the rotary shaft 19 center axis is possible.
To reverse this set up, simply lift up on the rotary shaft 19 and its head 23 will exit the lift head cavity 24. Then the rotary shaft 19 is free to rotate along the center axis of the pivot pins 9 to its horizontal position.
Figure S shows another possible style of the leg mounting system. Here we have the bottom lift tube 13 along with its tube base. There are four equally spaced legs 25 extending outwards from the centerline of the bottom lift tube 13. These legs 25 pivot around a fixed leg pin 26. In the down position, the leg lock pin 27 is used to lock the leg 25 in the down position. This leg lock pin 27 is also used to lock the leg 25 in the folded up wards position for storage. This would be typical for all four legs 25.
These drawings shows a canoe being loaded onto a van, or any vehicle by one person and the ONE ARM LIFT.
Figure 6 shows a canoe mounted on its side to the ONE ARM LIFT. (see figure 2 for mounting explanations). The legs of the lift are placed as shown in line with the canoe, and the canoe at 90 degrees to the vehicle center line. Once the canoe has been attached to the ONE ARM LIFT, the operator moves to the outside side of the canoe and rotates it upwards.
Figure 7 shows the operator at the far end of the canoe. He lifts it up wards to a height that would allow the canoe to clear the roof of the vehicle. The operator then carries the end of the canoe sideways around its natural radius towards the end of the vehicle. Once over the top center of the vehicle, the operator then lowers it onto the roof or roof rack.
Figure 8 shows the canoe clearing the top of the vehicle with the ONE ARM LIFT
in the front and the operator at the back. (please note that the ONE ARM LIFT could be mounted at the back of the vehicle in reverse). Once the weight of the canoe is being supported by the vehicle, the operator can then move to the front where the ONE ARM
LIFT is. By unbuckling buckle 1 and its strap 2, the boat plate 3 will detach from the canoe. Then retract the top lift tube 11 into the bottom lift tube 13. Then remove the legs 14 and place them in to their four carrier holes.
_'J_ Figure 10 shows the folded ONE ARM LIFT assembly. The top lift tube 11 is fully retracted into the bottom lift tube 13. The height adjust pin 12 holds the two lift tubes 13, & 11 together. The four legs 14 are pressed into the carrier holes in which are incorporated in the tube base. The boat plate 3 with its clip 5 are kept in its vertical position.
Gravity is always pushing the rotary shaft head 23 downwards until it aligns over the lift head cavity 24. The rotary shaft 19 then falls downward in to the bottom of the lift head cavity 24. In this position no side movement of the rotary shaft 19 can happen. Only rotation along the rotary shaft 19 center axis is possible.
To reverse this set up, simply lift up on the rotary shaft 19 and its head 23 will exit the lift head cavity 24. Then the rotary shaft 19 is free to rotate along the center axis of the pivot pins 9 to its horizontal position.
Figure S shows another possible style of the leg mounting system. Here we have the bottom lift tube 13 along with its tube base. There are four equally spaced legs 25 extending outwards from the centerline of the bottom lift tube 13. These legs 25 pivot around a fixed leg pin 26. In the down position, the leg lock pin 27 is used to lock the leg 25 in the down position. This leg lock pin 27 is also used to lock the leg 25 in the folded up wards position for storage. This would be typical for all four legs 25.
These drawings shows a canoe being loaded onto a van, or any vehicle by one person and the ONE ARM LIFT.
Figure 6 shows a canoe mounted on its side to the ONE ARM LIFT. (see figure 2 for mounting explanations). The legs of the lift are placed as shown in line with the canoe, and the canoe at 90 degrees to the vehicle center line. Once the canoe has been attached to the ONE ARM LIFT, the operator moves to the outside side of the canoe and rotates it upwards.
Figure 7 shows the operator at the far end of the canoe. He lifts it up wards to a height that would allow the canoe to clear the roof of the vehicle. The operator then carries the end of the canoe sideways around its natural radius towards the end of the vehicle. Once over the top center of the vehicle, the operator then lowers it onto the roof or roof rack.
Figure 8 shows the canoe clearing the top of the vehicle with the ONE ARM LIFT
in the front and the operator at the back. (please note that the ONE ARM LIFT could be mounted at the back of the vehicle in reverse). Once the weight of the canoe is being supported by the vehicle, the operator can then move to the front where the ONE ARM
LIFT is. By unbuckling buckle 1 and its strap 2, the boat plate 3 will detach from the canoe. Then retract the top lift tube 11 into the bottom lift tube 13. Then remove the legs 14 and place them in to their four carrier holes.
_'J_ Figure 10 shows the folded ONE ARM LIFT assembly. The top lift tube 11 is fully retracted into the bottom lift tube 13. The height adjust pin 12 holds the two lift tubes 13, & 11 together. The four legs 14 are pressed into the carrier holes in which are incorporated in the tube base. The boat plate 3 with its clip 5 are kept in its vertical position.
Claims (18)
1. It is a stand in which has a detachable top in which separates and gets attached via a strap and buckle to one end of the boat.
2. The legs in the open position are on a slight downward slope to increase friction with the ground and to allow for any ground irregularities.
3.The legs are slid in by hand, in to four cavities equally spaced along the center axis of the stand.
4. Another method for attaching the legs are by having them pivot from a folded up wards position to a downward position. A lock holds these legs in the open or retracted position.
5. The top and bottom lift tubes slide inside of each other for rigidity. The top lift tube has a series of holes for different height adjustment to suite different vehicles.
6. The lift head has two fixed pivot pins in which allows the pivot tube and rotary shaft to rotate around the center axis of the pins.
7. The rotary shaft is able to rotate around its axis, but is captive along its length.
8. A lock collar can easily slide with minimum clearance on the rotary shaft.
It has a sufficient amount of weight to drop due to gravity in the vertical orientation.
It has a sufficient amount of weight to drop due to gravity in the vertical orientation.
9. The top of the lift head has a bored out cavity to allow a slide fit of the lock collar.
10. The lift head has two shoulders: one to support the pivot tube in the horizontal position, and the other to act as a stop for the pivot tube in the vertical position.
11. The clip is used to retain the connect pin to the rotary shaft.
12. The centerline of the boat and the boat plate is slightly off center to the centerline of the stand. This is to load the pivot tube to the vertical shoulder of the lift head. Also when releasing the lock collar in the vertical position, the boat will not have a tendency to rotate the rotary shaft to its horizontal position.
13. The rotary shaft has a recess, inside of the pivot tube, to allow the use of the pivot pin to act as a retainer, thus preventing the rotary shaft from sliding out.
14. There is a shoulder on the rotary shaft to act as a stop and as a bearing surface when it is in the vertical position.
15. The tip of the connector pin is pointed to allow easy line up with the top hole in the rotary shaft.
16. The length of the legs are designed to support the boat firmly in the side mounted position. Leg extensions are used if heavier boats are to be used.
17. The boat plate has a fixed connect pin in which allows this plate to pivot in only one direction.
18. In the vertical locked position, the rotary shaft can rotate around its center axis only.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2226593 CA2226593A1 (en) | 1998-03-17 | 1998-03-17 | One arm lift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2226593 CA2226593A1 (en) | 1998-03-17 | 1998-03-17 | One arm lift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2226593A1 true CA2226593A1 (en) | 1999-09-17 |
Family
ID=29409043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2226593 Abandoned CA2226593A1 (en) | 1998-03-17 | 1998-03-17 | One arm lift |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2226593A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816293A (en) * | 2020-07-09 | 2020-10-23 | 徐州医科大学 | Medical display capable of being adjusted in multiple directions |
| CN112212178A (en) * | 2020-09-11 | 2021-01-12 | 沈文月 | Forest fire monitoring device based on self-steering |
-
1998
- 1998-03-17 CA CA 2226593 patent/CA2226593A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816293A (en) * | 2020-07-09 | 2020-10-23 | 徐州医科大学 | Medical display capable of being adjusted in multiple directions |
| CN111816293B (en) * | 2020-07-09 | 2021-04-06 | 徐州医科大学 | Medical display capable of being adjusted in multiple directions |
| CN112212178A (en) * | 2020-09-11 | 2021-01-12 | 沈文月 | Forest fire monitoring device based on self-steering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |