IP Library Granted Patent US 7,137,478
Granted Patent B2
US 7,137,478 · App. 10/787,117 · Granted Nov 21, 2006

Ladder safety cage

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Quick Facts
Patent No.
US 7,137,478
App. No.
10/787,117
Granted
Nov 21, 2006
Kind
B2
Abstract

A safety ladder cage system is of a fabricated construction to reduce the time and expertise to provide a safety cage to one side of a scaffold system access ladder. The safety cage system is divided into two components each of which can be carried by a worker to the appropriate point and loosely hung from a ladder rung or the ladder uprights. The worker is then free to accurately position the safety cage component to one side of the ladder. The second component is then brought into position and attached to the opposite side of the ladder in a similar manner. The components are then attached to each other along vertical securing edges outwardly spaced from and generally centered on the ladder. Each component preferably includes its own captured connector for engaging the opposite component.

Claims (17)

1. A safety cage in combination with a ladder

comprising a series of safety cage sections spaced in the length of the ladder and cooperating with the ladder to provide a protected “U”;

and wherein each section is vertically split so as to provide a vertical split of the safety cage spaced centrally outwardly from the ladder, with one cage component on one side of said vertical split and a second cage component on the opposite side of said vertical split, each cage component including a releasable mechanical securement with the other respective cage component at said vertical split to secure said components to one another at said vertical split, and

each component including a releasable mechanical securement at a free edge of the component for attachment to a ladder.

2. A safety cage in combination with a ladder as claimed in claim 1 wherein each cage component is supported by a rung of said ladder.

3. A safety cage as claimed in claim 1 in combination with a ladder, said ladder comprising two upright members connected by a series of ladder rungs, each upright member comprising a “U” shaped cross section facing outwardly with said rungs intersecting with a base of each “U” shaped cross section.

4. A safety cage in combination with a ladder as claimed in claim 3 wherein each ladder upright member has a series of holes in said base of said “U” shaped section with said series of holes being spaced in the length of said ladder.

5. A safety cage in combination with a ladder as claimed in claim 4 wherein each ladder upright member has inwardly extending flanges either side of said “U” shaped cross section forming a restricted connecting structure in each ladder upright member.

6. A safety cage for a ladder

comprising a series of safety cage sections spaced in the length of the ladder and cooperating with the ladder to provide a protected “U”;

and wherein each section is vertically split with one cage component on one side of said vertical split and a second cage component on the opposite side of said vertical split, each cage component including a releasable mechanical securement with the other respective cage component at said vertical split to secure said components to one another at said vertical split at a point outwardly from the ladder, and

each component including a releasable mechanical securement at a free edge of the component for attachment to a ladder;

wherein each cage component at said free edge includes a hook for initial placement over a ladder rung for temporary hanging of said components.

7. A safety cage as claimed in claim 6 wherein said cage components are of the same shape and interchangeable.

8. A safety cage as claimed in claim 7 wherein each component at said free edge includes two hook connectors facing downwardly and one hook connector facing upwardly.

9. A safety cage as claimed in claim 8 wherein each hook connector includes a vertically extending “U” shaped channel sized to straddle a vertical support of said ladder.

10. A safety cage as claimed in claim 9 wherein each hook connector includes a captured mechanical fastener for effecting securement of said connector to said ladder.

Assignments (15)
SECURED NOTES NOTICE AND CONFIRMATION OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Aug 8, 2023
From: SAFEWORKS, LLC; BRAND SHARED SERVICES LLC; BRANDSAFWAY SERVICES LLC; FORMING CONCEPTS, INC.; MATCOR, INC.
To: WILMINGTON TRUST, NATIONAL ASSOCIATION
Reel/Frame 064530/0135 →
SECURITY INTEREST Recorded Jun 27, 2017
From: BRAND SHARED SERVICES LLC
To: GOLDMAN SACHS BANK USA
Reel/Frame 042826/0275 →
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Jun 21, 2017
From: MORGAN STANLEY SENIOR FUNDING, INC.
To: BRAND SHARED SERVICES LLC; ALUMA SYSTEMS CONCRETE CONSTRUCTION, LLC; MATCOR, INC.
Reel/Frame 042931/0235 →
CHANGE OF NAME Recorded Jun 8, 2017
From: BRAND SERVICES, LLC
To: BRAND SHARED SERVICES LLC
Reel/Frame 042739/0509 →
NOTICE AND CONFIRMATION OF GRANT OF SECURITY INTEREST IN PATENTS Recorded Dec 10, 2013
From: BRAND SERVICES, LLC
To: MORGAN STANLEY SENIOR FUNDING, INC.
Reel/Frame 031786/0861 →
US PATENTS RELEASE OF SECURITY INTEREST - FIRST LIEN Recorded Dec 3, 2013
From: UBS, AG, STAMFORD BRANCH
To: FR BRAND HOLDINGS CORP; BRAND ENERGY & INFRASTRUCTURE SERVICES, INC.; ALUMA SYSTEMS INC.
Reel/Frame 031763/0742 →
US PATENTS RELEASE OF SECURITY INTEREST - SECOND LIEN Recorded Dec 3, 2013
From: UBS, AG, STAMFORD BRANCH
To: FR BRAND HOLDINGS CORP; BRAND ENERGY & INFRASTRUCTURE SERVICES, INC.; ALUMA SYSTEMS INC.
Reel/Frame 031763/0748 →
ASSIGNMENT & ASSUMPTION AGREEMENT Recorded Oct 24, 2012
From: MORGAN STANLEY & CO. LLC
To: UBS AG, STAMFORD BRANCH
Reel/Frame 029179/0074 →
FIRST LIEN PATENT SECURITY AGREEMENT Recorded Oct 24, 2012
From: BRAND SERVICES, LLC; ALUMA SYSTEMS CONCRETE CONSTRUCTION, LLC
To: UBS AG, STAMFORD BRANCH
Reel/Frame 029187/0479 →
SECOND LIEN PATENT SECURITY AGREEMENT Recorded Oct 24, 2012
From: BRAND SERVICES, LLC; ALUMA SYSTEMS CONCRETE CONSTRUCTION, LLC
To: UBS AG, STAMFORD BRANCH
Reel/Frame 029187/0878 →
SECOND LIEN PATENT SECURITY AGREEMENT Recorded Mar 6, 2007
From: BRAND SERVICES, LLC
To: MORGAN STANLEY & CO. INCORPORATED
Reel/Frame 018961/0168 →
FIRST LIEN PATENT SECURITY AGREEMENT Recorded Feb 22, 2007
From: BRAND SERVICES, LLC
To: MORGAN STANLEY & CO. INCORPORATED
Reel/Frame 018917/0983 →
CHANGE OF NAME Recorded Feb 14, 2007
From: BRAND SERVICES, INC.
To: BRAND SERVICES, LLC
Reel/Frame 018891/0424 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 4, 2005
From: ALUMA ENTERPRISES INC.
To: BRAND SERVICES, INC.
Reel/Frame 016360/0630 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 27, 2004
From: BECKER, ALLAN JAMES
To: ALUMA ENTERPRISES INC.
Reel/Frame 015029/0980 →