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| | Patent 5228797: Connecting pin device for working machine operating links |
 | | A device in accordance with claim 6 wherein each of said first and second rigid elastic annular members is an incomplete annular ring formed of a rigid metal material, with the incomplete ring, due to its structure, being capable of expanding and contracting in the radial directions. |
 | | A device in accordance with claim 10 wherein each of said first and second rigid elastic annular member is an incomplete annular ring formed of a rigid metal material, with the ring, due to its structure, being capable of expanding and contracting in the radial direction. |
 | | Pins 11 are inserted into the associated pin boss portions 21R, 23 and 21L to effect linkage of the machine operating link device 80, and pins 12 are inserted into the associated pin boss portions 22R, 23 and 22L to effect, likewise, linkage of the machine operating link device 80. |
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