Invention Grant
- Patent Title: Reduced friction earplug dispenser
- Patent Title (中): 减少摩擦耳塞机
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Application No.: US14138585Application Date: 2013-12-23
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Publication No.: US09501890B2Publication Date: 2016-11-22
- Inventor: David M. Rudek , Guenter M. Zilligen , Joerg R. Purfuerst
- Applicant: 3M INNOVATIVE PROPERTIES COMPANY
- Applicant Address: US MN St. Paul
- Assignee: 3M Innovative Properties Company
- Current Assignee: 3M Innovative Properties Company
- Current Assignee Address: US MN St. Paul
- Agent Kenneth B. Wood
- Main IPC: G07F11/54
- IPC: G07F11/54 ; G07F11/44 ; G07F11/24 ; G07F11/40 ; G07F11/48 ; G07F17/00 ; A61F15/00

Abstract:
A manually operable dispenser for dispensing disposable earplugs. The dispenser includes a housing, an index body, and a plate. The housing forms an opening for receiving earplugs from a container. The index body includes a handle and a hub. The hub forms an upper major face, a lower major face, and a plurality of circumferentially arranged bores. Each of the bores is open to the major faces and is defined by a wall surface extending through a thickness of the hub. At least a portion of the wall surface of each of the bores has an anti-bonding construction. The hub is rotatably mounted within the housing. The plate is connected to the housing, and forms a dispensing aperture. A manually-applied rotational force at the handle selectively aligns respective ones of the bores with the dispensing aperture. The anti-bonding construction promotes sliding, low friction interface with individual earplugs.
Public/Granted literature
- US20150179017A1 Reduced Friction Earplug Dispenser Public/Granted day:2015-06-25
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