Ladder tape roll for venetian blinds
Patent 4416320 Issued on November 22, 1983. Estimated Expiration Date: 
July 14, 2002. Estimated 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.
July 14, 2002. Estimated 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.Patent References 2534080 2837152 2918968 InventorAssigneeApplicationNo. 06/398387 filed on 07/14/1982US Classes:160/177RUnits and subcombinations thereofExaminersPrimary: Caun, Peter M.Attorney, Agent or FirmInternational ClassesE06B 9/38 (20060101)E06B 9/307 (20060101) E06B 9/28 (20060101) AbstractA ladder tape roll (1) for venetian blinds and having a through hole (2) for receiving and for unrotatable connection with the tilting bar of the blind and provided with means (6) for axial locking of the ladder tape roll in relation to the tilting bar and provided with fixing means (10) for the ladder tapes (b 9) of the blind. One end of the roll (1) is slotted (3) and conically tapered (4), and has a part provided with outer threads (5). A nut (6) having inner threads (7) and an inner conical part (8) having smaller dimension than the conical part (4) of the roll are provided to press the slotted (3) part of the roll together for squeezing and axially locking the ladder tape roll to the tilting bar by tightening around said threads (5) of the roll. | |
