Patent
   D736551
Priority
Sep 23 2013
Filed
Sep 23 2013
Issued
Aug 18 2015
Expiry
Aug 18 2029
Assg.orig
Entity
unknown
2
11
n/a
The ornamental design for an elevating part of a chair back, as shown and described.

FIG. 1 is a perspective view of an elevating part of a chair back showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a perspective view of an embodiment of an elevating part of a chair back.

The broken lines shown in the drawing are for illustrative purposes only and form no part of the claimed design.

Lai, Yu-Shan, Lai, Yen-Chuan

Patent Priority Assignee Title
D793788, Jan 08 2015 Chair back adjuster
D959183, Jul 22 2021 Back support for vehicle seats
Patent Priority Assignee Title
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6273384, May 22 1998 Unit Press Limited Chair back adjustment mechanism
6315362, May 18 2001 Yi Chun Enterprise Ltd. Height adjustment mechanism for chair backrest or arm
6343840, May 18 2001 Yi Chun Enterprise Ltd. Height adjustment mechanism for chair backrest or arm
8579376, Feb 01 2011 Device for adjusting the height of the backrest of an office chair
8960799, Aug 16 2011 YOON, WOOK Lumbar support seat
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