Door lifting device

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Description

FIG. 1 is a perspective view of a door lifting device showing my design;

FIG. 2 is a perspective view with the platform lifted up the guide posts thereof;

FIG. 3 is a right side elevation view thereof;

FIG. 4 is a rear side elevation view thereof;

FIG. 5 is a front elevation view with the platform lifted up the guide post thereof; and,

FIG. 6 is a top plan view thereof.

Claims

The ornamental design for a door lifting device, as shown and described.

Referenced Cited
U.S. Patent Documents
1694173 December 1928 Goranson
2989286 June 1961 Gillespie
4834339 May 30, 1989 Clarke
4846443 July 11, 1989 Collins et al.
5048795 September 17, 1991 Vitale
6079696 June 27, 2000 Bette
6296230 October 2, 2001 Roth
6497399 December 24, 2002 Nelson
D595472 June 30, 2009 Kimura
D602671 October 20, 2009 McMorris et al.
20100044657 February 25, 2010 Patrick et al.
Patent History
Patent number: D640441
Type: Grant
Filed: Jun 23, 2010
Date of Patent: Jun 21, 2011
Inventor: Laurence Cecil Yates Cairns (Ballygawley)
Primary Examiner: Cynthia Ramirez
Application Number: 29/370,268
Classifications
Current U.S. Class: Conveying, Lifting, Or Transferring Article (D34/28)