Film reel spacer
Patent 3973740 Issued on August 10, 1976. Estimated Expiration Date: 
August 10, 1993. 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.
August 10, 1993. 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 1920657 3885751 3889894 InventorAssigneeApplicationNo. 620428 filed on 10/07/1975US Classes:242/586.6, Resilient242/613, Particular hub or core formation242/613.5Flangeless coreExaminersPrimary: McCarthy, Edward J.Attorney, Agent or FirmInternational ClassG03B 21/32 (20060101)AbstractA spacer for use on microfilm reels to facilitate the storage of relatively small lengths of film thereon. The spacer comprises a unitary structure of resilient material having adjacent separable arcuate end portions which are deflected when the spacer is pressed onto the hub of the film reel, the resilience of the spacer material causing the arcuate end portions to come together when the spacer is on the reel hub. A plurality of spacing bars extend from the circular outer configuration of the spacer to define an inner circle having a diameter substantially equal to the outer diameter of the reel hub. The film to be stored may be threaded onto the reel hub between the arcuate end portions of the spacer. | |
