CA3045652C - Metal scissors with gears and gear bar system - Google Patents
Metal scissors with gears and gear bar system Download PDFInfo
- Publication number
- CA3045652C CA3045652C CA3045652A CA3045652A CA3045652C CA 3045652 C CA3045652 C CA 3045652C CA 3045652 A CA3045652 A CA 3045652A CA 3045652 A CA3045652 A CA 3045652A CA 3045652 C CA3045652 C CA 3045652C
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- CA
- Canada
- Prior art keywords
- arm
- scissors
- gears
- gear bar
- pair
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B13/00—Hand shears; Scissors
- B26B13/26—Hand shears; Scissors with intermediate links between the grips and the blades, e.g. for remote actuation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B13/00—Hand shears; Scissors
- B26B13/28—Joints
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- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Scissors And Nippers (AREA)
- Gears, Cams (AREA)
Abstract
The invention provides an improved drive system of metal scissors. The drive system includes gears and gear bar. Traditionally metal scissors are lever system. Two arms of metal scissors are pushed and cutting edges close and cut metal sheet. The improved metal scissors cut metal sheet by pushing the arm and master arm. The master +arm of metal scissors drives the gears and gear bar. The gears and gear bar run and move the cutting edges of metal scissors. Then the metal scissors cut the metal sheet. The improve metal scissors increase to cut thicker thickness of metal sheet than traditional metal scissors. It is easier for the improved metal scissors to cut metal sheet than traditional metal scissors.
Description
METAL SCISSORS WITH GEARS AND GEAR BAR SYSTEM
Background of The Invention Traditional metal scissors are lever system. There are 2 arms in the metal scissors. When arms are pushed, cutting edges close and cut metal sheet. Metal sheet is used great effort to be cut by hand, especially thick metal sheet.
Summary of The Invention Drive system of metal scissors according to the invention are gear system that includes the gears and gear bar. When the arms of metal scissors are pushed, the arms of metal scissors run to close and make the gears and gear bar operate. The cutting edges close and cut the metal sheet. The gears and gear bar system of metal scissors are easier to cut metal sheet, especially thick metal sheet than traditional lever system of metal scissors.
Brief Description of Drawings Fig. 1A is a front view of metal scissors, according to an embodiment of the present application;
Fig. 1B is a top view of the metal scissors in Fig.1A;
Fig. 2A is a front view of shaft of the metal scissors in Fig. 1A;
Fig. 2B is a top view of shaft in Fig. 2A;
Fig. 3A is a top view of the master arm of the metal scissors in Fig.1A;
Fig. 3B is a side view of the master arm in Fig. 3A;
Fig. 4A is a top view of support legs and a spring of the metal scissors in Fig. 1A;
Fig. 4B is a side view of the support legs and spring in Fig. 4A;
Fig. 5A is a top view of an open limit stopper of the metal scissors in Fig.
1A;
Fig. 5B is a side view of the open limit stopper in Fig. 5A;
Fig. 6A is a top view of a close limit stopper of the metal scissors in Fig.
1A;
Fig. 6B is a side view of the close limit stopper in Fig. 6A;
Date recue / Date received 202 1-1 1-03
Background of The Invention Traditional metal scissors are lever system. There are 2 arms in the metal scissors. When arms are pushed, cutting edges close and cut metal sheet. Metal sheet is used great effort to be cut by hand, especially thick metal sheet.
Summary of The Invention Drive system of metal scissors according to the invention are gear system that includes the gears and gear bar. When the arms of metal scissors are pushed, the arms of metal scissors run to close and make the gears and gear bar operate. The cutting edges close and cut the metal sheet. The gears and gear bar system of metal scissors are easier to cut metal sheet, especially thick metal sheet than traditional lever system of metal scissors.
Brief Description of Drawings Fig. 1A is a front view of metal scissors, according to an embodiment of the present application;
Fig. 1B is a top view of the metal scissors in Fig.1A;
Fig. 2A is a front view of shaft of the metal scissors in Fig. 1A;
Fig. 2B is a top view of shaft in Fig. 2A;
Fig. 3A is a top view of the master arm of the metal scissors in Fig.1A;
Fig. 3B is a side view of the master arm in Fig. 3A;
Fig. 4A is a top view of support legs and a spring of the metal scissors in Fig. 1A;
Fig. 4B is a side view of the support legs and spring in Fig. 4A;
Fig. 5A is a top view of an open limit stopper of the metal scissors in Fig.
1A;
Fig. 5B is a side view of the open limit stopper in Fig. 5A;
Fig. 6A is a top view of a close limit stopper of the metal scissors in Fig.
1A;
Fig. 6B is a side view of the close limit stopper in Fig. 6A;
Date recue / Date received 202 1-1 1-03
2 Fig. 7A is a top view of a close limit stopper and gear bar of the metal scissors in Fig. 1A;
Fig. 7B is a side view of the close limit stopper and gear bar in Fig. 7A.
Detailed Description of The Invention In the drawings, which form parts of this specification, Figs. 1A and 1B illustrate metal scissors with gears and gear bar. In the particularly advantageous embodiment of the invention illustrated, metal scissors comprise master arm 1, passive arm 2, cutting edges 3, arm 4, support leg 5, open limit stopper 6, close limit stopper 7, close limit stopper and gear bar 8, gear 9, cover 10, spring 11, locker 12, first bolt 13, shaft 14, second bolt 15, and gear 16.
As seen in Figs. 1A and 1B, the locker 12 unlocks the metal scissors arms 1, 2, 4, which are opened by spring 11. Opening of the arms 1, 2 and 4 also causes two cutting edges 3 opened and apart from each other via the first bolt 13. Open limit stopper 6 stops the scissors from continuing to open when the scissors are opened to the maximum extent permitted by the open limit stopper 6. When master arm 1 is pushed to close, for example by a user, gears 9 and gear bar 8 start operating. Cutting edges 3 is caused to pivotally close about the first bolt 13 and cut a metal sheet. Cutting edges 3 are stopped by close limit stopper 7 when the extent of close reaches the maximum extent permitted by the close limit stopper 7 and close limit stopper and gear bar 8.
Passive arm 2 and arm 4 are connected by first bolt 13. There are 5 or 7 gears in a gear system. The number of the gears is depended on length of arm 4. Seven gears are used in a long length of arm 4. As seen in the example of Fig. 1A, there are 5 gears in the gear system. The diameter of the gear 16 mounted on the shaft 14 is bigger than the diameter of the others.
There are 4 support legs 5 in the support holder. As illustrated in Figures 4A
and 4B, one side of 4 support legs 5 and spring 11 are connected by a riveting bolt. The support legs 5 and spring 11 do free movement. The other side of 4 support legs 5 connect to close limit stopper 7 and close limit stopper and gear bar 8 by riveting bolts. 2 support legs connect to close limit stopper 7 and do free movement. 2 support legs connect to close limit stopper Date recue / Date received 2021-11-03
Fig. 7B is a side view of the close limit stopper and gear bar in Fig. 7A.
Detailed Description of The Invention In the drawings, which form parts of this specification, Figs. 1A and 1B illustrate metal scissors with gears and gear bar. In the particularly advantageous embodiment of the invention illustrated, metal scissors comprise master arm 1, passive arm 2, cutting edges 3, arm 4, support leg 5, open limit stopper 6, close limit stopper 7, close limit stopper and gear bar 8, gear 9, cover 10, spring 11, locker 12, first bolt 13, shaft 14, second bolt 15, and gear 16.
As seen in Figs. 1A and 1B, the locker 12 unlocks the metal scissors arms 1, 2, 4, which are opened by spring 11. Opening of the arms 1, 2 and 4 also causes two cutting edges 3 opened and apart from each other via the first bolt 13. Open limit stopper 6 stops the scissors from continuing to open when the scissors are opened to the maximum extent permitted by the open limit stopper 6. When master arm 1 is pushed to close, for example by a user, gears 9 and gear bar 8 start operating. Cutting edges 3 is caused to pivotally close about the first bolt 13 and cut a metal sheet. Cutting edges 3 are stopped by close limit stopper 7 when the extent of close reaches the maximum extent permitted by the close limit stopper 7 and close limit stopper and gear bar 8.
Passive arm 2 and arm 4 are connected by first bolt 13. There are 5 or 7 gears in a gear system. The number of the gears is depended on length of arm 4. Seven gears are used in a long length of arm 4. As seen in the example of Fig. 1A, there are 5 gears in the gear system. The diameter of the gear 16 mounted on the shaft 14 is bigger than the diameter of the others.
There are 4 support legs 5 in the support holder. As illustrated in Figures 4A
and 4B, one side of 4 support legs 5 and spring 11 are connected by a riveting bolt. The support legs 5 and spring 11 do free movement. The other side of 4 support legs 5 connect to close limit stopper 7 and close limit stopper and gear bar 8 by riveting bolts. 2 support legs connect to close limit stopper 7 and do free movement. 2 support legs connect to close limit stopper Date recue / Date received 2021-11-03
3 and gear bar 8 and do free movement. Open limit stopper 6 connects to the middle of support legs 5 by riveting bolts. Spring 11 opens the arms 1, 2, 4, and cutting edges 3.
When the open limit stopper 6 touches middle of the support leg 5, the arms 1, 2, 4, and cutting edges 3 stop opening. When the arms 1, 2, 4, and cutting edges 3 close, and when close limit stopper 7 and close limit stopper and gear bar 8 touch middle of the support leg and stop closing.
There are 2 covers 10 in the gear system. The covers 10 support gears 5 and locker 12.
There are 2 holes in the close limit stopper 7 and the close limit stopper and gear bar 8 each hole for receiving a leg of the spring 11. The 2 legs of spring 11 do free movement in the holes. As seen in Fig 1A, in passive arm 2, this is an open type connection in the passive arm. When passive arm 2 connects to the shaft 14, the passive arm 2 and the master arm 1 are connected with each other via the shaft 14. The passive arm 2 and the shaft 14 may be secure by screws.
As seen in Fig. 2A, in the shaft 14, 3 splines 14a, 14b and 14c are configured to be formed on the shaft 14. The shaft 14 includes shaft portions 14d, 14e for receiving arm 2. 2 splines 14a and 14b connect to master arm 1. Passive arm 2 connects to the shaft portions 14d and 14e.
As seen in Figs.1A, 1B, 2A, 2B, 3A and 3B, master arm 1 includes a first sub-arm la, and a second sub-arm lb. The first sub-arm la has a first opening lc, and the second sub-arm lb has a second opening ld. The opening lc is configured to receive and mesh with the spline 14a, and the opening ld is configured to receive and mesh with the spline 14b. The gear 16 may be placed between the first sub-arm la and second sub-arm lb. When the shaft 14 with splines 14a, 14b and 14c penetrates into the openings 1 c and ld, the gear 16 is configured to mesh with the spline 14c and with one of the gears 9, as illustrated in FIG.
2A. Passive arm 2 has two ends 2a and 2b (see FIG. 1B) attaching to respectively shaft portions 14d, 14e. In the example of FIG. 1B, the two ends 2a and 2b of the passive arm 2 attach to respectively shaft portions 14d, 14e, and Gland 19 and gland 17 are configured to respectively connect to shaft portions 14d and 14e. The two ends 2a and 2b respectively connects to gland 19, 17 by bolt 20, 18. When master arm 1 connects to the shaft 14, the master arm 1 and the shaft 14 may be secured by screws, as illustrated in Fig.
1B.
Date recue / Date received 2021-11-03
When the open limit stopper 6 touches middle of the support leg 5, the arms 1, 2, 4, and cutting edges 3 stop opening. When the arms 1, 2, 4, and cutting edges 3 close, and when close limit stopper 7 and close limit stopper and gear bar 8 touch middle of the support leg and stop closing.
There are 2 covers 10 in the gear system. The covers 10 support gears 5 and locker 12.
There are 2 holes in the close limit stopper 7 and the close limit stopper and gear bar 8 each hole for receiving a leg of the spring 11. The 2 legs of spring 11 do free movement in the holes. As seen in Fig 1A, in passive arm 2, this is an open type connection in the passive arm. When passive arm 2 connects to the shaft 14, the passive arm 2 and the master arm 1 are connected with each other via the shaft 14. The passive arm 2 and the shaft 14 may be secure by screws.
As seen in Fig. 2A, in the shaft 14, 3 splines 14a, 14b and 14c are configured to be formed on the shaft 14. The shaft 14 includes shaft portions 14d, 14e for receiving arm 2. 2 splines 14a and 14b connect to master arm 1. Passive arm 2 connects to the shaft portions 14d and 14e.
As seen in Figs.1A, 1B, 2A, 2B, 3A and 3B, master arm 1 includes a first sub-arm la, and a second sub-arm lb. The first sub-arm la has a first opening lc, and the second sub-arm lb has a second opening ld. The opening lc is configured to receive and mesh with the spline 14a, and the opening ld is configured to receive and mesh with the spline 14b. The gear 16 may be placed between the first sub-arm la and second sub-arm lb. When the shaft 14 with splines 14a, 14b and 14c penetrates into the openings 1 c and ld, the gear 16 is configured to mesh with the spline 14c and with one of the gears 9, as illustrated in FIG.
2A. Passive arm 2 has two ends 2a and 2b (see FIG. 1B) attaching to respectively shaft portions 14d, 14e. In the example of FIG. 1B, the two ends 2a and 2b of the passive arm 2 attach to respectively shaft portions 14d, 14e, and Gland 19 and gland 17 are configured to respectively connect to shaft portions 14d and 14e. The two ends 2a and 2b respectively connects to gland 19, 17 by bolt 20, 18. When master arm 1 connects to the shaft 14, the master arm 1 and the shaft 14 may be secured by screws, as illustrated in Fig.
1B.
Date recue / Date received 2021-11-03
4 As seen in Figs. 4A and 4B, in the support holder, there are 4 support legs 5 and a spring 11. Spring 11 makes arm 4 and passive arm 2 open.
As seen in Figs. 5A and 5B, in the open limit stopper 6, support legs 5 connect to open limit stopper 6 by riveting bolts.
As seen in Figs 6A and 6B, in the close limit stopper 7, support legs 5 connect to close limit stopper 7 by riveting bolts. There is a hole in close limit stopper 7. Leg of spring 11 do free movement in the hole. Close limit stopper 7 connects to passive arm 2 by welding.
Figs 7A and 7B illustrate an example of a close limit stopper and gear bar 8.
The close limit stopper and gear bar 8 connects to arm 4 by welding. Support legs 5 connect to close limit stopper and gear bar 8 by riveting bolts. There is a hole in close limit stopper and gear bar 8. Leg of spring 11 do free movement in the hole.
Date recue / Date received 202 1-1 1-03
As seen in Figs. 5A and 5B, in the open limit stopper 6, support legs 5 connect to open limit stopper 6 by riveting bolts.
As seen in Figs 6A and 6B, in the close limit stopper 7, support legs 5 connect to close limit stopper 7 by riveting bolts. There is a hole in close limit stopper 7. Leg of spring 11 do free movement in the hole. Close limit stopper 7 connects to passive arm 2 by welding.
Figs 7A and 7B illustrate an example of a close limit stopper and gear bar 8.
The close limit stopper and gear bar 8 connects to arm 4 by welding. Support legs 5 connect to close limit stopper and gear bar 8 by riveting bolts. There is a hole in close limit stopper and gear bar 8. Leg of spring 11 do free movement in the hole.
Date recue / Date received 202 1-1 1-03
Claims (9)
1. A pair of scissors, comprising:
a first arm having a first cutting edge at a distal end of first arm and a first handle at a proximal end;
a second arm moveable in relation to the first arm, the second arm comprising a master arm and a passive arm, the master arm having a first sub-arm defining a first opening and a second sub-arm defining a second opening, the passive arm pivotably connected to the first arm at a bolt, the second arm having a second cutting edge at a distal end of the passive arm, and a second handle at a proximal end of the master arm;
a drive system comprising one or more gears placed between the first arm and the second arm and a gear bar secured to the passive arm; and a shaft located on the second arm and spaced apart from the bolt, the shaft comprising a first spline, a second spline and a first gear between the first spline and second spline, the first spline securely received in the first opening, the second spline securely received in the second opening, and the first gear meshed with one of the plurality of gears of the drive system, wherein a proximal end of the passive arm pivotably connected to a distal end of the master arm at the shaft, wherein when the proximal end of the first handle and the proximal end of the master arm are pushed towards each other from an open position in which the first and second cutting edges are spaced apart from each other, pivotal movement of the master arm and the shaft with respect to the passive arm is converted to rotation of the one or more gears of the drive system and movement of the gear bar to drive the passive arm to a closed position in which the first and second cutting edges are in close proximity with each other.
a first arm having a first cutting edge at a distal end of first arm and a first handle at a proximal end;
a second arm moveable in relation to the first arm, the second arm comprising a master arm and a passive arm, the master arm having a first sub-arm defining a first opening and a second sub-arm defining a second opening, the passive arm pivotably connected to the first arm at a bolt, the second arm having a second cutting edge at a distal end of the passive arm, and a second handle at a proximal end of the master arm;
a drive system comprising one or more gears placed between the first arm and the second arm and a gear bar secured to the passive arm; and a shaft located on the second arm and spaced apart from the bolt, the shaft comprising a first spline, a second spline and a first gear between the first spline and second spline, the first spline securely received in the first opening, the second spline securely received in the second opening, and the first gear meshed with one of the plurality of gears of the drive system, wherein a proximal end of the passive arm pivotably connected to a distal end of the master arm at the shaft, wherein when the proximal end of the first handle and the proximal end of the master arm are pushed towards each other from an open position in which the first and second cutting edges are spaced apart from each other, pivotal movement of the master arm and the shaft with respect to the passive arm is converted to rotation of the one or more gears of the drive system and movement of the gear bar to drive the passive arm to a closed position in which the first and second cutting edges are in close proximity with each other.
2. The pair of scissors of claim 1, wherein the drive system comprises 5 or 7 gears.
Date recue / Date received 2021-11-03
Date recue / Date received 2021-11-03
3. The pair of scissors of claims 1 or 2, wherein the first gear has a biggest diameter than the plurality gears of the drive system.
4. The pair of scissors of any one of claims 1 to 3, wherein one of the plurality of gears is coupled to the gear bar such that rotation of the one of the plurality of gears causes the downward movement of the gear bar to drive the passive arm to the closed position.
5. The pair of scissors of any one of claims 1 to 4, wherein when the first and second handles are pulled away from each other from the closed position, pivotal movement of the master arm with respect to the passive arm at the shaft is converted to rotation of the one or more gears and movement of the gear bar to drive the passive arm to the open position.
6. The pair of scissors of any one of claims 1 to 5, further comprising a top cover and a bottom cover mounted to at least one of the first arm and the second arm for supporting the drive system placed between the first arm and the second arm.
7. The pair of scissors of any one of claims 1 to 6, further comprising a support holder that comprises four legs, a spring, a close limit stopper, and an open limit stopper, wherein one end of the four legs and the spring are pivotably connected by a first riveting bolt, another end of two legs pivotably connected to the close limit stopper by a second riveting bolt, and the another end of remaining two legs pivotably connected to the gear bar by a third riveting bolt, and the open limit stopper pivotably connected to middle portions of the four support legs by a third riveting bolt.
8. The pair of scissors of claim 7, wherein the spring is mounted between the close limit stopper and the gear bar, each of the close limit stopper and the gear bar having a bore for receiving an end of the spring.
9. The pair of scissors of any one of claims 1 to 8, further comprising a locker for locking the pair of scissors in the closed position.
Date recue / Date received 2021-11-03
Date recue / Date received 2021-11-03
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA3045652A CA3045652C (en) | 2019-06-10 | 2019-06-10 | Metal scissors with gears and gear bar system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA3045652A CA3045652C (en) | 2019-06-10 | 2019-06-10 | Metal scissors with gears and gear bar system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA3045652A1 CA3045652A1 (en) | 2020-12-10 |
| CA3045652C true CA3045652C (en) | 2022-06-21 |
Family
ID=73744497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3045652A Active CA3045652C (en) | 2019-06-10 | 2019-06-10 | Metal scissors with gears and gear bar system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA3045652C (en) |
-
2019
- 2019-06-10 CA CA3045652A patent/CA3045652C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CA3045652A1 (en) | 2020-12-10 |
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