Manhole safety cross

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Description

FIG. 1 is a side and top perspective view of a manhole safety cross showing my new design:

FIG. 2 is a bottom and side perspective view thereof:

FIG. 3 is a side view thereof:

FIG. 4 is a side view thereof:

FIG. 5 is a top view thereof:

FIG. 6 is a bottom view thereof:

FIG. 7 is a top and side perspective of a manhole safety cross; and,

FIG. 8 is a bottom and side perspective of a manhole safety cross.

Claims

I claim the ornamental design for a manhole safety cross, as shown.

Referenced Cited
U.S. Patent Documents
D27673 September 1897 Greger
1585372 May 1926 Burnham
D225459 December 1972 Altobello
D225460 December 1972 Altobello
D246384 November 15, 1977 Brown
D247254 February 14, 1978 Brown
D371410 July 2, 1996 Kupstas
D452330 December 18, 2001 Johnston
D488053 April 6, 2004 Murphy
D552628 October 9, 2007 Lucas
D663608 July 17, 2012 Ruperto
20030037489 February 27, 2003 McKernan
20080289905 November 27, 2008 Pelsue
20120297691 November 29, 2012 Gaspar
20130312338 November 28, 2013 Gaspar
20160168817 June 16, 2016 Lokkinen
Foreign Patent Documents
304428214 December 2017 CN
000604640-0001 November 2006 EM
D1638217 August 2019 JP
Other references
  • Allegro Industries Twitter https://twitter.com/allegroind Posted Dec. 11, 2018 (Year: 2018).
  • Manhole Safety Cross https://www.manholesafetycross.com/ Available Oct. 19, 2018 (Year: 2018).
  • Manhole-Safety-Cross Spec Sheet https://www.allegrosafety.com/wp-content/uploads/2018/11/9406-24A_9406-36A_9406-24_9406-30-Manhole-Safety-Cross.pdf Uploaded Nov. 2018 (Year: 2018).
Patent History
Patent number: D878634
Type: Grant
Filed: May 12, 2018
Date of Patent: Mar 17, 2020
Assignee: (Mesa, AZ)
Inventor: Steven Collins (Mesa, AZ)
Primary Examiner: Leanne Was-Englehart
Application Number: 29/647,441