Patent
   D508871
Priority
Jul 26 2004
Filed
Jul 26 2004
Issued
Aug 30 2005
Expiry
Aug 30 2019
Assg.orig
Entity
unknown
3
7
n/a
The ornamental design for an “adjustment device for helmet strap,” as shown and described.

FIG. 1 is a perspective view of an “adjustment device for helmet strap” showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

It being understood that the broken lines are for exemplary illustrative purposes only and form no part of the claimed design.

Fang, Kuo-Yun

Patent Priority Assignee Title
9949522, Aug 30 2013 MSA Technology, LLC; Mine Safety Appliances Company, LLC Suspension connection arrangement for a suspension system of a safety helmet
D564406, Apr 10 2006 Head restraint strap for vehicle car seats
D607375, Aug 11 2005 Radial adjuster mechanism for storage and transport devices
Patent Priority Assignee Title
2205742,
2511234,
3214809,
4942628, Sep 20 1989 Mine Safety Appliances Company Helmet suspension having ratchet adjustment
5950245, Apr 14 1997 MSA Technology, LLC; Mine Safety Appliances Company, LLC Adjustable headband with a ratchet mechanism having different resistances
6256798, May 14 1997 Heinz, Egolf Helmet with adjustable safety strap
D484437, Feb 26 2003 HONEYWELL SAFETY PRODUCTS USA, INC , A DELAWARE CORPORATION Knob for a length adjustment mechanism for a strap
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