Rollback preventer for injection molded tape dispensers

US9908735B2 · kind B2 · utility

Inventors

• Larry E. Tiedemann · Winona, US
• Robert J. Harter · La Crosse, US

Key dates

• Filing date: Feb 25, 2016
• Grant date: Mar 6, 2018
• Expiry date: Feb 25, 2036

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T156/1795
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A tape dispenser includes a plastic injection molded frame with a resiliently flexible finger that helps prevent the free end of a roll of tape from accidentally retracting, falling back, and frustratingly sticking to the coiled portion of the tape. To avoid this problem, a distal end of the finger presses against the inner diameter of a cardboard or plastic spool about which the tape is wrapped. Friction between the finger's distal end and the spool's inner diameter inhibits reverse rotation of the spool. To avoid breaking the finger while forcefully loading the roll of tape into the dispenser during assembly, a lateral backstop surface on the dispenser prevents the spool from bending the finger too far in a laterally outward direction. To avoid breaking the finger during subsequent rough use, another backstop surface prevents the spool from bending the finger too far in a radially downward direction.