Invention Grant
- Patent Title: Door anti-slamming device
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Application No.: US15126832Application Date: 2015-03-17
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Publication No.: US10246924B2Publication Date: 2019-04-02
- Inventor: Nicolas Leith Hopkins
- Applicant: Nicolas Leith Hopkins
- Agency: Amster, Rothstein & Ebenstein LLP
- Priority: NZ622569 20140317
- International Application: PCT/NZ2015/000015 WO 20150317
- International Announcement: WO2015/142187 WO 20150924
- Main IPC: E05F5/06
- IPC: E05F5/06 ; E05F5/02 ; E05F5/08 ; E05F5/10

Abstract:
A door anti-slamming device, wherein the device includes a chamber with an entrance located at a first end; wherein the chamber houses a plunger component with a tip configured to slidably move in and out of the entrance, therefore defining a compacted configuration and an extended configuration of the device, respectively; wherein the device includes an biasing means configured to bias the device towards the extended configuration; wherein the device includes a first cavity and a second cavity located within the chamber and/or plunger component, and wherein a partition is located between the first and second cavity characterised in that the partition includes an orifice configured to control material transfer rate between the first cavity and second cavity, wherein the device is configured to transition to the compacted configuration at a rate controlled by the material transfer from the first cavity into the second cavity.
Public/Granted literature
- US20170096850A1 DOOR ANTI-SLAMMING DEVICE Public/Granted day:2017-04-06
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