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| All Patents in class 464/136 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 97,575 | Dec. 07, 1869 | S. Wheeler | Improved shaft-coupling | |
 | 420,284 | Jan. 28, 1890 | F. Schoff | Universal Joint Coupling | |
 | 1,371,750 | Mar. 15, 1921 | W.R. Fox | Flexible shaft-coupling | |
 | 1,382,720 | Jun. 28, 1921 | W.R. Fox, A.A. Riddell | Flexible shaft-coupling | |
 | 1,566,849 | Dec. 22, 1925 | W.R. Fox | Coupling for flexible shafting | |