Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 8047330 | Telescoping ladder jack A telescoping ladder jack supports a scaffolding plank and comprises a main member. A telescoping beam includes longitudinally spaced holes on each side of the telescoping beam and is inserted into or extracted from the main member. A locking mechanism is mounted to... | 11/01/2011 |
| 7360627 | Support bracket securable to an upwardly extending wall stud A support bracket securing to a vertically extending wall stud and providing cantilevered support of a horizontally disposed plank. An elongated and reinforced support surface includes first and second ends. A channeled base extends from the first end and includes f... | 04/22/2008 |
| 7093689 | Ladder support bracket A ladder support bracket (11) receives a rung of a ladder intended to be placed against the gutter (19) of a building and thus restraining it, and hence the ladder, from sideways or downwards movement. The bracket includes a first region (12) fo... | 08/22/2006 |
| 7059450 | Automatic lubrication system An automatic lubrication system for a vehicle, comprising a pump assembly having a plurality of outlet ports, a motor operable to drive the pump assembly, and a cartridge that is attachable to the pump assembly to provide a source of lubricant to the pump. The cartr... | 06/13/2006 |
| 6969223 | Pipe handling apparatus A pipe handling apparatus for transporting pipe between a position adjacent a pipe storage rack and a rig floor elevated above the pipe storage rack is provided. The pipe handling apparatus includes a support frame, substantially horizontally disposed platform suppo... | 11/29/2005 |
| 6883642 | Method of ladder-supported scaffold erection, and ladder bracing and scaffolding system for use therewith An improved ladder-supported scaffolding technique and system using a pair of horizontally spaced vertical ladders for supporting staging planks therebetween and held vertically and rigidly by top brackets parallely in front of, along, and spaced from a building str... | 04/26/2005 |
| 6761246 | Methods and apparatus for mounting a work platform to a ladder A mounting system mounts a work platform to a ladder that includes a plurality of rungs, such that the work platform is elevated a distance above the ground. The mounting system includes a support system, a rod, and a suspension mount. The support system includes a ... | 07/13/2004 |
| 6662902 | Safety ladder scaffold A worker back support which is laterally and slidably attached to a scaffold plank. The back support has a grip which is releasably attached about the waist of the worker. The back support provides the worker with backward support and a safe attachment to... | 12/16/2003 |
| 6533070 | Roof buddy Raisable and lowerable platforms for use with ladders that are laid against exterior and interior walls, and against other inclined surfaces such as pitched roof surfaces. Two or more ladders can each include the platforms which are controlled by motors t... | 03/18/2003 |
| 6286624 | Methods and apparatus for mounting a work platform to a ladder A mounting system for mounting a work platform to a ladder includes a support system, a rod, and a suspension mount. The support system includes a plurality of members which attach to the work platform and attach to the ladder. The rod is configured to at... | 09/11/2001 |
| 6148957 | Ladder supported scaffolding The ladder scaffold assembly of the present invention for releasable mounting on two spaced apart ladders placed side by side comprises a scaffold platform having opposing first and second lateral ends and a ladder attachment bracket disposed on the oppos... | 11/21/2000 |
| 6109391 | Ladder scaffold A ladder scaffold is suspended from rods inserted through the hollow rungs of a ladder. The ladder scaffold includes at least two ladders, at least two platform braces, and a platform. Each platform brace has three rods, two long members, and two short me... | 08/29/2000 |
| 6045102 | Multi-purpose ladder and roof device The multi-purpose Combo Jack™ tool combines the functions of a ladder jack, a roof bracket and a roof hooks into one piece of equipment. There are a pair of hooks attached to a rail supporting arm which is pivotably connected to a bracket body arm. The ... | 04/04/2000 |
| 5992564 | Ladder guide assembly for a scaffolding A ladder support device is secured to a scaffold by two base arms. At one end of the base arms the device forms a "channel" in which the ladder can move vertically but not horizontally. This secures the ladder so that it cannot fall away from the scaffold... | 11/30/1999 |
| 5862881 | Safety scaffold and platform ladders Safety scaffold or platform foldable structures for ladders are disclosed. The scaffold structure embodies an elongated expandable scaffold floor section which is removably connected to two spaced apart upstanding ladders. Male and female floor sections a... | 01/26/1999 |
| 5769181 | Ladder bracket and staging utilizing the same A ladder support bracket for staging in which a pair of ladders are supported in a vertical position spaced from a wall and having a staging element supported by the ladder rungs. The support bracket is a rigid A-frame and the ladder is tightly clamped be... | 06/23/1998 |
| 5727650 | Support framework for a scaffold system A scaffold support comprises a beam fabricated in the form of a rectangular steel tube having width less than its height, and a pair of legs each fabricated in the form of a rectangular steel tube. The legs are welded to opposite sides of the beam so as t... | 03/17/1998 |
| 5647452 | Scafford jig A scaffold jig including a first T-bar that has a first horizontal bar with a first vertical bar extending therefrom. The first vertical bar has a plurality of adjustment holes. Also included is a second T-bar that has a first horizontal U-iron with a sec... | 07/15/1997 |
| 5638914 | Portable platform system A portable telescoping platform system. The platform system includes a plurality of telescoping poles, each pole having a removable lower bracket and a removable upper bracket. A plurality of legs extend from each telescoping pole, each leg extending in a... | 06/17/1997 |
| 5152370 | Bridge docking structure for aircraft A system for servicing and maintaining an aircraft includes a fuselage dock assembly having a first ground-supported column, a second ground-supported column and a walkway section supported by the first and second columns. The system also includes a tail ... | 10/06/1992 |
| 4949810 | Attachment to stabilize and expand the use of hollow rung ladders A pair of attachments for use with ladders constructed with hollow rungs to stabilize the ladder and to protect the gutter. These attachments when used with ladders also provide for a scaffold plank. The attachments when used with a ladder on a pitched ro... | 08/21/1990 |
| 4941547 | Safety featured ladder scaffolding A wall scaffold using a pair of ladders equipped with ladder jacks for supporting a horizontal work platform. The invention includes numerous safety features such as a safety railing on standards attached to the outboard ends of the ladder jacks, a paint ... | 07/17/1990 |
| 4901818 | Fire fighting roof ladder accessory A firefighting roof ladder accessory that is designed to be supported between two roof ladders. The accessory comprises a beam, having two foot supprot surfaces that are perpendicular to each other, and end boxes each extending over a ladder rail and prov... | 02/20/1990 |
| 4616734 | Roof Scaffolding A firefighters' roof scaffolding is disclosed which is used by firefighters for standing upon the roof of a burning building in order to make a ventilation hole in the roof for ventilating the gases, and the like, from the interior of the building. The sc... | 10/14/1986 |
| 4537282 | Work holding stackable step stool A work supporting and holding stackable step stool is formed of plastic material, and includes a plurality of vertical and horizontal apertures provided in the step stool body sides for supporting and holding lumber material therewith for providing low an... | 08/27/1985 |
| 4306700 | Ladder jack In the art of scaffolding, temporarily utilizing elevated planks, stages or platforms for supporting workmen and materials through use of two or more leaning ladders, a compact ladder jack has a tubular, scaffold-supporting arm for storing a suspension ch... | 12/22/1981 |
| 4291784 | Compact, quick assembly scaffold A scaffold assembly including a ladder unit having an outside vertical member with a hollow top end and bottom end, an inside vertical member connected to the outside vertical member by horizontal steps, the top step and the bottom step having a hollow en... | 09/29/1981 |
| 4232759 | Mobile ladder-scaffolding system A track supported mobile ladder-scaffolding system with self-adjusting lateral supporting structure at the top for engaging a roof by means of a vehicle which engages track structure attachable to a roof by clamping: safety hook structure prevents support... | 11/11/1980 |
| 4074792 | Portable hanging scaffold A strong lightweight hanging scaffold for four or more workmen with heavy materials has a wide range of adjustability adapting it for a variety of uses on many types of one and two story buildings including buildings with gable ends. The scaffold features... | 02/21/1978 |
| 4060148 | Portable collapsible scaffold structure A portable collapsible scaffold structure is adapted to be supported in use upon and transported by a truck or other self-powered ground vehicle, and includes a pair of extensible ladders adapted to be mounted in use adjacent to the vehicle and coupled th... | 11/29/1977 |
