Abstract: Mask (10, 10?, 21, 22) for use in coating a carbon-carbon composite brake disc (25) with anti-oxidant. The mask is composed of carbon-carbon composite material or nonreactive ceramic material. The mask is configured with edge ridges (11, 13) that are aligned with the outer and inner annular diameters of the carbon-carbon composite brake disc, a gasflow channel (12) between the ridges, and a gas access port (18) that allows gas to enter the gasflow channel. The mask may also include a gas exit port (16) having a valve (17) operatively connected thereto, so that gas flow may be restricted when pressure within the mask and carbon-carbon composite brake disc falls below a specified minimum value.

Abstract: A method is described to decompose perchlorate in a FeCl3/HCl aqueous solution such as would be used to regenerate an anion exchange resin used to remove perchlorate. The solution is mixed with a reducing agent, preferably an organic alcohol and/or ferrous chloride, and can be heated to accelerate the decomposition of perchlorate. Lower temperatures may be employed if a catalyst is added.

Abstract: A method is described to decompose perchlorate in a FeCl3/HCl aqueous solution such as would be used to regenerate an anion exchange resin used to remove perchlorate. The solution is mixed with a reducing agent, preferably an organic alcohol and/or ferrous chloride, and can be heated to accelerate the decomposition of perchlorate. Lower temperatures may be employed if a catalyst is added.

Abstract: A dental chair attachment for supporting an implement such as a light assembly, a hand piece delivery device or other device. The attachment is arranged for the pivotal movement of the implement about a supporting post. The attachment is arranged so that the periphery of the post is not in contact with the pivoting member of the implement. Upper and lower collar bases secured to the post support an inner sleeve that has an internal diameter larger than the diameter of the post. An outer sleeve which supports the pivoting member is rotatively mounted to the inner sleeve. The pivoting member including the outer sleeve, as it pivots, does not contact the periphery of the supporting post. Resilient rings of the upper and lower collar bases are forced radially inward against the periphery of the post to secure the attachment to the post.

Abstract: A patient transfer device adapted to be a component of a patient transport stretcher, chair or gurney is disclosed. A rigid articulated support having a head portion and a lower portion hinged to one another is adapted to be attached to a stretcher having a Fowler mechanism. A self locking reversible gearbox which can be manually driven from either side of the transport device is attached to the support. The gearbox drives an articulated output shaft to which rollers are attached. The rollers drive an endless belt beneath the support. The endless belt has finite lengths of low friction webbing attached. The low friction webbing wraps around the support and across the top thereof between the support and a flexible semirigid transfer sheet. The low friction webbing is attached to the semirigid sheet such that when the gearbox is activated the transfer sheet is moved across the rigid support to extend outwardly from either side of the rigid support.