A collapsible chair having a backrest, at least one backrest support rod, and a backrest rod anchor coupling the backrest to the backrest support rod, wherein the backrest rod anchor comprises a rod end receiving portion coupled to a backrest attachment portion, the backrest support rod is at least partially enclosed by the rod end […]
An apparatus comprises a movable lock ring and a lock ann that prevents inadvertent movement of the lock ring. Contemplated configurations are especially useful in delayed coking vessels to prevent opening of the vessel while the vessel is in operation.
Methods and apparatus are provided in which a collapsible rocking chair has legs that translate towards and away from each other to configure the chair between open and collapsed dispositions, and at least one leg that slidably articulates with a rocker. Preferred embodiments have four legs. The left back leg slidably articulates with a left […]
A collapsible chair (10) has a first (110) and second (112) front leg, a rear leg (120), a seat support rod (130), and a backrest is attached to the front legs. The legs and the seat support rod are coupled via cross braces (140, 150) such that the seat support rod pivots in one direction […]
An electronic educational game (1) comprising a learning aid (10) that is adapted to receive and identify a lesson card (20), and to subsequently accept user input and to provide responses. The responses provided are at least partially determined by the identity of the lesson card. The identity is determined by using an optical code reader (200), that is part of […]
The present invention provides an improved probe tip (ball) made of silicon nitride that has a drilled cavity sized and dimensioned to receive a probe stem.
An advanced cosmetic color analysis system) analyzes the color of a three dimensional object to produce a plurality of color values for distinct subsets of a portion of the object, and a cosmetic analyzer combines the color values to produce a cosmetic color determination that has relative weightings of multiple cosmetic colors. Contemplated systems are […]
Apparatus, compositions and methods provide cathodic protection to a structure by placing an anode layer (10) directly between the structure (22) and its underlying foundation (30). Structures contemplated to be protected in this manner include especially very large structures such as above ground storage tanks. In one aspect of preferred embodiments, the anode layer (10) comprises sheets of at least 85% aluminum […]
An apparatus having a side emitting fiber encased in a translucent or transparent rod such as a towel rack, curtain rod, or toilet paper dispenser.
A collector (202) captures light from source images as a field of pixels, a color analyzer (292) analyzes a proper subset (420) of the field to produce a plurality of color values, and a cosmetic analyzer then uses the color values to produce a cosmetic color determination. Another aspect of the present invention comprises a window having a light passage area, […]