US Patent: 2,096,022
|
Lifting jack
|
Patentee:
|
|
Jack Akins (exact or similar names) - Benton Harbor, MI |
|
Patent Dates:
|
Applied: |
Jun. 20, 1934 |
Granted: |
Oct. 19, 1937 |
USPTO (New site tip) Google Patents
Report data errors or omissions to steward
Jeff Joslin
|
Description: |
This patent provides a means of forming the lifting screws by cold forming which was claimed to avoid compromising the tensile strength and did not introduce flaws that act as stress-risers. |
|