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Patent No. 5571247

Self Containing Enclosure for Protection from Killer Bees

A self contained protective enclosure with an opening for entry and egress and a screen for ventilation and viewing.

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Class 182/104 - PIVOTALLY CONNECTED LADDERS, MUTUALLY SUSTAINING


Subclass of Class 182 - Fire escape, ladder, or scaffold
Definition: Device including pivotally connected ladders depending on
No. of patents: 19
Last issue date: 02/14/2006


NumberTitleIssue Date
6997282Adjustable ladder
A ladder is adjustable in a plurality of planes so a wide variety of sloped surfaces can be accommodated. The ladder includes non-slip surfaces on the steps and a paint can holder that can accommodate a one gallon paint can. ...
02/14/2006
6945360Modular ladder assembly
A modular ladder assembly includes at least two ladder assemblies, each assembly having first and second parallel stiles and a plurality of spaced apart rungs disposed between the first and second stiles, the plurality of rungs being perpendicular to said first and ...
09/20/2005
6913114Roof anchor ladder attachment assembly
A roof ridge anchor assembly for attaching to and securing a ladder to the roof ridge of a building. One embodiment consists of a pair of devices attached to the rungs of a ladder to allow a ladder to be rolled up onto a roof, turned over and secured in position ove...
07/05/2005
6474663Combined pair of ladders and transportation dolly device
What is disclosed is a combined pair of ladders and transportation dolly device. The device includes a first framework having a first and a second end and a second framework having a first and a second extremity. The first extremity of the second framewor...
11/05/2002
6443261Step stool
A step stool includes a frame including a front leg and a rear leg movable relative to the front leg and a leg lock coupled to the frame and arranged to retain the rear leg in a fixed position relative to the front leg upon movement of the rear leg to an ...
09/03/2002
6079072Foldable and rigidizable space spanning structure
A frame assembly supports a work surface of either flexible material or of sections of foldable and unfoldable relatively rigid material all so that the frame assembly and material may either be unfoldable and rigidized or folded into a compact package. T...
06/27/2000
5722507Step stool assembly
A platform stool is provided including a frame having a front leg and a rear leg. The front leg is pivotably coupled to the rear leg for movement about a leg pivot axis between an opened position and a closed position. The platform stool includes a multi-...
03/03/1998
5715909Stepladder including a bracing shelf
A stepladder is provided with a bracing shelf that acts both as a conventional pivoting shelf and a bracing mechanism preventing accidental closing of the stepladder when the shelf is in a bracing position. The shelf includes abutting members adapted to c...
02/10/1998
5685391Triladder
A connecting device (10) is adaptable to assemble one, two or three ladders (72, 74, 76) into a tripod structure. A body (12) of the connecting device has six rung receivers (28) affixed thereto and outwardly projecting therefrom in pairs, with each pair ...
11/11/1997
5577574Adjustable stepladder
An adjustable stepladder comprising a front and rear leg assembly, each having a pair of parallel legs with coupling apertures at their upper ends and elastomeric stoppers at their lower ends, the leg assembly having a plurality of steps extending transve...
11/26/1996
4934485Combination ladder and hand truck
A combination foldable ladder and hand truck is disclosed comprising a plurality of ladder sections joined at respective ends by hinges and having retractable transport wheels and a retractable support means. The device is functional as a step ladder as w...
06/19/1990
4907675Modular constructional element in particular of a ladder or scaffolding
This modular constructional element (14), which is of the type comprising at least two uprights between which at least one crosspiece extends, is such that each end of the uprights is screw-threaded and adapted to cooperate with a fixing ring (18, 19) for...
03/13/1990
4834216Foldable ladder structure and method of manufacturing the same
Foldable ladder structure and method of making the same wherein plastic material is injected and expanded in molds to form several parts of a foldable ladder which includes front and rear ladder sections that can be pivotally hinged at their upper portion...
05/30/1989
4478549Foldable loading ramp for all terrain/recreational vehicles and the like
Foldable ramp for on and off loading all terrain/recreational vehicles from the rear of trucks, trailers, and vans. The ramp folds longitudinally to a width smaller than the wheelbase of the all terrain/recreational vehicles. When folded it may be slipped...
10/23/1984
4371055Method of manufacturing a fiberglass ladder
A combination step and extension ladder manufactured of composite material such as fiberglass is disclosed. The inner and outer side rails are molded fiberglass so that the fibers are angularly oriented with respect to the longitudinal axis of the respect...
02/01/1983
4295544Platform stepladder
A stepladder comprises a pair of front legs pivotally attached to a forward platform and a pair of rear legs pivotally attached to a rear platform. The front platform and rear platform are hingedly attached to one another for movement between a coplanar p...
10/20/1981
4244444Walking stepladder
A walking stepladder has a pair of substantially identical ladder sides, relatively hinged at the top, each side having step rungs for ascent or descent of the ladder from either side. In walking the ladder, the user straddles the ladder top with his legs...
01/13/1981
4216844Fitting for joints of ladder sections
A fitting for a joint for two ladder sections, which in all angle positions is adapted to lock automatically. This fitting includes a first and a second fitting part which are respectively connectable to the ends of two side pieces of a ladder section and...
08/12/1980
4157742Accommodation ladder arrangements
Accommodation ladder having a first flight of steps of adjustable length with one end adapted for connection to a ship while its opposite end is pivotably mounted about a horizontal axis at a given level above the quayside. This flight of steps is also mo...
06/12/1979
 
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