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US RE49,130 E1Granted
Ladder attachment platform
AssigneesSavannah River Nuclear Solutions, LLC, Richard W. Swygert, William Nelson Lewis, Jr.
InventorsRichard W. Swygert, William Nelson Lewis, Jr.
Life of this patent
Estimating the term…
Abstract
A ladder attachment platform is provided that includes a base for attachment to a ladder that has first and second side rails and a plurality of rungs that extend between in a lateral direction. Also included is a user platform for having a user stand thereon that is carried by the base. The user platform may be positioned with respect to the ladder so that it is not located between a first plane that extends through the first side rail and is perpendicular to the lateral direction and a second plane that extends through the second side rail and is perpendicular to the lateral direction.
Claims20
A ladder attachment platform, comprising:
- a base for attachment to a ladder, wherein the ladder has a first side rail and a second side rail, and wherein the ladder has a plurality of rungs that extend from the first side rail to the second side rail in a lateral direction;
- a user platform for having a user of the ladder attachment platform stand thereon, wherein the user platform is carried by the base, wherein the user platform is positioned with respect to the ladder such that the user platform is not located between a first plane that extends through the first side rail and is perpendicular to the lateral direction and a second plane that extends through the second side rail and is perpendicular to the lateral direction;
- a first attachment member that is a clevis fastener that is attached to a first side of the base and that is attachable to a first one of the plurality of rungs of the ladder;
- and
- a second attachment member that is a clevis fastener that is attached to the first side of the base and that is attachable to the first one of the plurality of rungs of the ladder.
2 more elements
A ladder attachment platform, comprising:
- a base for attachment to a ladder, wherein the ladder has a first side rail and a second side rail, and wherein the ladder has a plurality of rungs that extend from the first side rail to the second side rail in a lateral direction;
- a user platform for having a user of the ladder attachment platform stand thereon, wherein the user platform is carried by the base;
- a first attachment member that is attached to the base and that is attachable to a first one of the plurality of rungs of the ladder;
- a turnbuckle that is attached to the base and that is attachable to a second one of the rungs of the plurality of rungs of the ladder;
- and
- a second attachment member that is attached to the base and that is attachable to the first one of the plurality of rungs of the ladder;
- wherein the first attachment member is a clevis fastener that is attached to a first side of the base and is not movable with respect to the first side of the base, wherein the first one of the plurality of rungs of the ladder is disposed within the opening of the clevis fastener that is the first attachment member;
- and
- wherein the second attachment member is a clevis fastener that is attached to the first side of the base and is not movable with respect to the first side of the base, wherein the first one of the plurality of rungs of the ladder is disposed within the opening of the clevis fastener that is the second attachment member.
6 more elements
A ladder attachment platform, comprising:
- a rail car having a first side and a second side that are located opposite from and spaced from one another in a width direction, wherein the rail car has an end that extends in the width direction from the first side to the second side;
- a ladder attached to the end of the rail car;
- a base attached to the ladder;
- a user platform for having a user of the ladder attachment platform stand thereon, wherein the user platform is carried by the base and is closer to the first side of the rail car than the second side of the rail car, wherein at least a portion of the user platform is located outboard from the first side of the rail car in the width direction;
- and
- wherein the entire user platform is located completely outboard from the first side of the rail car in the width direction.
3 more elements
A ladder attachment platform, comprising:
- a base for attachment to a ladder, wherein the ladder has a first side rail and a second side rail, and wherein the ladder has a plurality of rungs that extend from the first side rail to the second side rail in a lateral direction;
- a user platform for having a user of the ladder attachment platform stand thereon, wherein the user platform is carried by the base, wherein the user platform is positioned with respect to the ladder such that the user platform is not located between a first plane that extends through the first side rail and is perpendicular to the lateral direction and a second plane that extends through the second side rail and is perpendicular to the lateral direction;
- and,
- a turnbuckle that is attached to the base and that is attached to a second one of the rungs of the plurality of rungs of the ladder.
1 more element
A ladder attachment platform, comprising:
- a base for attachment to a ladder, wherein the ladder has a first side rail and a second side rail, and wherein the ladder has a plurality of rungs that extend from the first side rail to the second side rail in a lateral direction;
- a user platform for having a user of the ladder attachment platform stand thereon, wherein the user platform is carried by the base;
- a first attachment member that is attached to the base and that is attachable to a first one of the plurality of rungs of the ladder;
- a turnbuckle that is attached to the base and that is attachable to a second one of the rungs of the plurality of rungs of the ladder;
- and
- a base made of a plurality of square tubular members, and wherein the user platform is a solid plate having an anti-skid upper surface.
3 more elements
Dependencies are inferred from the claim text.