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US Patent: 2,227,397
Jack
Patentee: Millard B. Lucker (exact or similar names) - St. Joseph, MI USPTO Classifications: 188/67, 254/106, 74/141.5, 74/162, 74/169 Tool Categories: material handling : jacks : vehicle jacks : automobile and truck jacks Assignees: Auto Specialties Mfg. Co. - St. Joseph, MI Manufacturer: Auto Specialties Mfg. Co. - St. Joseph, MI Witnesses: Unknown	Patent Dates: Applied: Mar. 10, 1938 Granted: Dec. 31, 1940 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: Another "friction collar" or "friction grip" jack. The innovation is to use multiple friction plates (two, in this case).

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