| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Canada | 3 | |
| #3 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Electrical machinery and energy | |
| #4 | Transport | |
| #5 | Materials and metallurgy |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Shafts | |
| #3 | Unspecified technologies | |
| #4 | Dynamo-electric machines | |
| #5 | Vehicle wheels | |
| #6 | Casting metal | |
| #7 | Clutches and brakes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Leith Donald G | 7 |
| #2 | Leith Donald | 3 |
| #3 | Irvine Robert J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2018111418A1 | Axel assembly | |
| CA2799254A1 | Universal joint and method for manufacturing same | |
| US6912929B2 | Multi-piece crankshaft construction | |
| US6820518B2 | Crankshaft assembly | |
| CA2269517A1 | Multi-piece crankshaft construction | |
| US6173628B1 | Multi-piece crankshaft construction | |
| US5899120A | Crankshaft with laminated counterweight | |
| US5857915A | Two-piece electric motor shaft |