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US Patent 4721468 - Training shoelace
US Patent Issued on January 26, 1988
Estimated Patent Expiration Date:
March 6, 2005Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
March 6, 2005Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA shoelace is described for use by young children or the handicapped, which facilitates tying of a bow. The shoelace has opposite end portions which are just stiff enough to substantially retain the shape to which they are bent while permitting children to easily bend them during the tying of a bow. This enables a child or handicapped person to bend the end portion to the shape required for one step of tying, and to "freeze" the shoelace in that position while he manipulates the other end portion or decides what is the next step to be done.Other References
| InventorsApplicationNo. 06/708797 filed on 03/06/1985US Classes:434/260, Manipulation of tool or fastener (e.g., zipper, shoelaces, etc.)24/712DRAWSTRING, LACED-FASTENER, OR SEPARATE ESSENTIAL COOPERATING DEVICE THEREFORExaminersPrimary: Grieb, William H.Attorney, Agent or FirmUS Patent References273798, 487411, 2306515, 2646630, 2869205, 2973597, 3256129, 3857139, 4017984, Shoe tying instructional deviceIssued on: 04/19/1977 Inventor: Bonfigli4247967Slip-resistant binding Issued on: 02/03/1981 Inventor: Swinton International ClassesA43C 9/00 (20060101)G09B 19/00 (20060101) |
