LandOfFree - US Patents - Listing for Fire escape, ladder, or scaffold

Fire escape – ladder – or scaffold – With indicator – signal or alarm

Apparatus for monitoring loading of a lift

Fire escape – ladder – or scaffold – Platform with elevating or lowering means

Apparatus for moving a work platform along a rail

Fire escape – ladder – or scaffold – Means maintaining platform level on angularly movable support – Swingable support

Apparatus for positioning person within container tank

Fire escape – ladder – or scaffold – Chute or escape tower for personnel

Apparatus for reduced tear propagation

Fire escape – ladder – or scaffold – Wall- or floor-attached – Ladder

Apparatus for rotatably positioning a ladder within a stairway

Fire escape – ladder – or scaffold – Safety device for ground-supported ladder

Apparatus for securing ladder to building structure

Fire escape – ladder – or scaffold – Platform with elevating or lowering means – Operating means on platform

Apparatus for self-adjusting the height of an outrigger attachab

Fire escape – ladder – or scaffold – Ladder – Supporting surface compensating means

Apparatus for supporting a stepladder in elevated condition

Fire escape – ladder – or scaffold – Pitched roof conforming scaffold

Apparatus for supporting a working platform on a pitched roof

Fire escape – ladder – or scaffold – Platform with elevating or lowering means – Suspended

Apparatus for suspending a person above ground

Fire escape – ladder – or scaffold – Convertible

Apparatus for use in automobile repair

Fire escape – ladder – or scaffold – Having transpositioning base and erecting means

Apparatus for wall timbering of drifts, tunnels, and the like

Fire escape – ladder – or scaffold – Means maintaining step lever on horizontally pivoted ladder

Apparatus suitable for use as stairways, stepladders and the lik

Fire escape – ladder – or scaffold – Ladder and platform

Apparatus to assist a mechanic to work on a vehicle

Fire escape – ladder – or scaffold – Convertible – Ladder

Apparatus with locking hinge convertible between creeper and...

Fire escape – ladder – or scaffold – Combined

Apparatus with utility tray mounted to scaffold

Fire escape – ladder – or scaffold – Wall- or floor-attached

Appratus and method for providing increased deflection resistanc

Fire escape – ladder – or scaffold – Wall- or floor-attached – Ladder

Aquatic ladder adapted for marine applications

Fire escape – ladder – or scaffold – Wall- or floor-attached – Ladder

Aquatic ladder adapted for marine applications