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Patent No. 6681419

Forehead support apparatusĀ 

A forehead support apparatus for resting a standing users forehead against a wall above a bathroom commode or urinal or beneath a showerhead.

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Class 110/335 - Concave surface area


Subclass of Class 110 - Furnaces
Definition: Structure wherein the arch has an inwardly curved contour.
No. of patents: 16
Last issue date: 04/17/2007


NumberTitleIssue Date
7204058Concrete arch and method of manufacture
A flat-formed arch ring unit includes a linear array of voussoir portions connected along their upper edges. The unit is then archable. A method is provided for forming an archway including the steps of arching one or more the flat formed arch ring units and locatin...
04/17/2007
6705243Supporting-arch construction and process for producing a supporting arch
A supporting-arch construction having two abutment blocks, one impost, in each case, engaging against each abutment block. Supporting-arch blocks are arranged between the imposts, and are of the same construction. A process is provided for producing such a supportin...
03/16/2004
5655464Apparatus for melting glass
A furnace for melting vitrifiable materials having a compartment (1) for the melting/refining of the glass and which is provided in its upstream part with at least one opening (12) to be supplied with vitrifiable materials (10) with the aid of a charging ...
08/12/1997
5444734Device for lifting and moving the roof of a spray cooled furnace
A combination of a spray cooled roof having a central opening, a support member and mast post wherein the roof is provided with an engagement which are detachably engaged to the corresponding engagement affixed to a support arm assembly which extends over...
08/22/1995
5069015Keystone set
The invention relates to a keystone set for installation in the transition region between two sections of an arch-shaped support structure, the set consisting of two transition stones, between which at least one keystone is axially insertable....
12/03/1991
4785769Refractory lined bodies
A burner throat is defined by a cage of tubes and is lined by fitting refractory tiles. A plurality of retaining means each having two joined parts, the outer part abutting the tubes and the inner part exerting an abutting force radially inwards on the ti...
11/22/1988
4753179Fire-resistant ceiling element for an industrial furnace, ceiling for an industrial furnace made of fire-resistant ceiling elements, and industrial furnace with such a ceiling
To simplify the insertion and to improve the stability as well as to avoid mechanical damage to a ceiling of an industrial furnace, the invention proposes a fire-resistant ceiling element to be used as a self-supporting building element which can be inser...
06/28/1988
4641589Process for the rapid assembly of elements composing a structure
A process for the assembly of at least one adjacent pair of component structural elements to form an upright vault structure, each of the elements having a recess, wherein the elements are arranged flat on the ground in the desired relative configuration ...
02/10/1987
4555995Thermal insulation of industrial furnace crowns
Thermal insulation for crowns and other industrial furnace parts having a surface subject to insulation. A reinforcing lattice made up of sectors is formed on such surface, such sectors are filled by refractory material. An adhesive protection layer made ...
12/03/1985
4413572Adjustable support assembly for open hearth furnace
The brackets connecting the furnace roof support beams to the buckstays of an open hearth furnace sidewall are reversible to provide for vertical shifting of the furnace roof support structure. The support brackets comprise a pair of symmetrical bracket p...
11/08/1983
4213753Honeycomb muffle in tank furnaces for glass melting
Honeycomb muffle in tank furnaces for glass melting, comprising blocks of refractory material, characterized in that at least the crown of each furnace is made of blocks of refractory material, the free surface of which facing inwardly of the furnace is s...
07/22/1980
4152534Furnace roof for the electric arc furnace
A furnace roof for an electric arc furnace which is divided into several blocks so that local damage, if any, of the furnace roof can be repaired easily by replacing a block which has been damaged with a new spare one, without taking down the whole furnac...
05/01/1979
4151362Electric furnace roof
Electric furnace roof comprising key-arch-wedge refractory shapes contained in adjacent concentric rings within a roof band, expansion allowance means disposed between brick in both the radial and circumferential direction and spacer means disposed betwee...
04/24/1979
4146742Electric furnace having a side wall to roof smoke hole mounting
An electric furnace roof having spaced-apart, inner and outer, cooling-fluid-circulating refractory tile or block-carrying metal ring structures is provided with an upwardly offset, outwardly extending, roof ledge segment which, with an aligned, cooperati...
03/27/1979
4137037Method of repairing furnace roofs during heat-up
A method for preventing the dropping of individual bricks from a sprung arch roof employed in a continuous tank-type glass melting furnace, the dropping of the bricks normally occurring during heat-up of the furnace. The slightly tapered bricks employed i...
01/30/1979
4005982Hot-blast stove for a blast furnace
A shaft casing has a funnel-shaped widened upper portion connected to a cupola casing. Between the widened portion and a refractory shaft lining is a supporting frame having a platform on which a cupola lining rests. The frame is connected to the lower en...
02/01/1977
 
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