Abstract: There is disclosed a vacuum assembly including a manifold housing having one port in fluid communication via a conduit with the suction side of a pump and wherein a user site is in fluid flow via a conduit with another port or the manifold housing and wherein a vacuum relief valve assembly is positioned within the manifold housing and includes a valve disc of a spring loaded valve disc assembly in line contact with a bevelled valve seat of a valve body of the vacuum relief valve assembly thereby defining a valve seat of line contact wherein the area downstream of the valve seat is greater than the area at the valve seat.

Abstract: A continuous finishing process for flexible materials using a continuous printing machine of the thousand dot type. A small controlled amount of a finishing product, comprising 90 to 100% of photopolymerizable active material, is deposited at a rate of 5 to 35 g/m.sup.2 per pass in the printing machine. The finishing product is then photopolymerized, and a satining or graining operation is performed. The above stages are repeated until the desired finish is obtained.The finishing product is photopolymerizable under ultraviolet radiation and comprises unsaturated prepolymers, liquid monomers, and photoinitiators.The apparatus comprises at least one module comprising a continuous printing machine, an ultraviolet radiation oven, and a satining or graining machine, these various machines being placed so as to achieve a continuous conveying of pieces to be treated from one machine to the other.

Abstract: A pin for fixing a panel to a support material is provided, having a shank (1) and a head (4), and a narrowed anchorage portion (5), a washer (2) for pressing the panel to be fixed against the support material and a guide (3) for limiting the penetration depth the shank (1). The pin, to be anchored within a material supporting the panel by means of a powder actuated tool does not damage the panel and ensures fixing of the pin with very good quality The guide (3) comprises a cylindrical tube which forms a hole within the panel, within which the cylindrical tube guide (3) is disposed so as to serve as a guide for the shank (1) of the pin as the same is being driven therethrough and into the support material.

Abstract: A weapon system including a carriage and a launching tube for a projectile mounted to the carriage on a cradle in a manner which secures the launch tube to the cradle during transportation, handling and storage and yet permits recoil of the launching tube. Bosses having the shape of stubs are attached to the launching tube and bosses having the shape of mortices forming grooves on the cradle form complementary pairs of elements which connect the launching tube transversely with respect to the cradle without opposing the recoil of the launching tube; the cradle thus forms a zero length ramp for the launching tube. Removable reinforcement pins are provided to secure the launching tube to the cradle. The bosses and the reinforcement pins are placed symmetrically with respect to a central longitudinal axis of the launching tube.

Abstract: A precompression metering pump of the prior art which is otherwise particularly advantageous, is nevertheless difficult to prime because of the high degree of compressibility of the air it initially contains in its pump chamber. The present invention improves this aspect of metering pump operations. It consists in providing additional resilient means (20) and at least one cylindrical part (10) level with the conventional outlet non-return valve of the pump and constituting a second outlet non-return valve. In a particular embodiment, the resilient means and the cylindrical part are received one above the other in the outlet channel (33) of the pump actuator rod (31). To do this, they bear respectively against a choking step (32) in the form of a lug and a shoulder (34) presented by said channel. In normal operation, the differential piston (4) of the pump moves out of the way so that operation takes place as in a prior art precompression metering pump.

Abstract: A pneumatic tire has a carcass which is formed, at least in part, of a regenerated cellulose fiber. The fiber is formed of at least one filament having a base of cellulose and/or at least one cellulose derivative containing cellulose ester groups, at least a part of these ester groups being formate groups.

Abstract: An anchor nut-cage fixing system is provided for positioning on a metal sheet from one of the faces of this metal sheet with a view to receiving bolts presented from this same face and comprising: a nut (1) with wings adapted for cooperating with an elongate hole (3) formed in the metal sheet (4); a plastic material cage (5) split by windows (6) and connected to an external collar (7). This collar is covered by a flat metal cap (9) perforated so as to let the bolts pass therethrough and having axially bent flanges (12) whose axial height is equal to or slightly less than the thickness of the collar, one at least of these flanges being bent to a little more than 90.degree. so as to imprison the collar.

Abstract: There is disclosed an improved liquid-solids-gas separator assembly permitting recovery of a major portion of the liquid stream for recirculation to a vacuum producing assembly wherein the separator assembly includes a gas-liquid and solids separator chamber and a liquids separator chamber for recovery of a recycle water stream and wherein the separator assembly comprises a vessel defining a cylindrically-shaped chamber into which a dental effluent including water, gases and lighter and heavier than water particles and from which a gas is vented through an upper conduit and liquid streams are recovered from a liquid pool wherein one liquid stream includes lighter than water particles and in one aspect is combined with heavier than water particles and a second liquid stream is recovered for recycling purposes.

Abstract: Two plate cylinders have horizontal and transverse axes placed respectively on either side of a vertical plane passing by axes of a touching cylinder and a blanket cylinder. A support is mounted between the touching cylinder and the blanking cylinder and is provided for the two plate cylinders, being tiltably mounted about the axis of the blanket cylinder. Two starting cylinders have horizontal and transverse axes disposed respectively slightly below and outside with respect to each plate cylinder. Control means control a tilting motion of the support of the plate cylinders for setting under pressure each of the plate cylinders and for rotatively driving the starting cylinders.

Abstract: Cooking apparatus, for example, a pressure fryer having a closed cooking vat, which includes a pressure-control system for terminating pressure introduction into the fryer and for releasing pressure therein slightly before the cooking cycle is complete to deter an operator from opening the cooking vat before pressure is released therefrom.

Abstract: A tandem projectile is made up of a front and rear projectile. The projectiles are connected by a wire which unwinds during flight of the projectiles. The front projectile leaves a launcher at greater initial velocity than the rear projectile, so that a wire in the front unwinds and the rear projectile follows the front projectile towards a target.

Abstract: A cone expansion wall-plug is provided comprising a shank (1), a spacer (13) disposed about the shank, an expandable socket (4) and, at the end (5) of the shank (1), a cone (3) for expanding the socket (4). In order to be able to secure an object to be fixed against the edge of the anchorage hole formed within a supporting material for housing the wall-plug, the socket (4) includes a compressible zone (8) in the form of a bellows and bent lugs providing expansion and guiding teeth (10). The socket (4) is formed by die-stamping a metal sheet blank.

Abstract: An apparatus for isolating an enclosure from external pollution includes a tube (2) with one end opening out into the enclosure and with its opposite end (5) being open. At least one slot (6) is provided in the inside wall of said tube in the vicinity of its opening (5), the slot being disposed in a plane perpendicular to the axis of said tube and sloping towards the opening. The slot is fed with gas so as to blow a continuous sheet of gas into the tube. At least one porous plate is disposed on the inside wall of said tube between the slot (6) and the opening (5), and the plate is fed with a gas which forms a small flow of gas suitable for overcoming the pressure reduction formed by the sheet of gas leaving from said slot (6). The enclosure is maintained at a pressure which is slightly higher than its surroundings so as to create a flow of gas running along said tube (2) and deflecting the sheet or sheets of gas leaving the slot (6) towards the opening (5).

Abstract: A separator for use in installations for conveying objects over distances by means of a flow of air, the separator including a generally cylindrical separator grid within a casing, and a spiral grid portion extending outside the cylindrical grid. The spiral grid portion is tangential to said cylindrical grid and to the outside wall of an inlet pipe for admitting a mixture of air and objects. The cylindrical grid and the spiral grid portions permit the passage of air, but not the objects. An adjustable flap is pivoted on the line of intersection between the inside wall of the inlet pipe and said cylindrical grid for controlling the flow of air and objects entering the separator. The spiral grid portion has a rough surface exposed to the gas flow.

Abstract: A fastening apparatus with an improved ejector, is provided with a barrel (3) having a narrowed rear portion (15) upon which an ejection ring (5) may slide. The ring (5) includes two grooves (12, 12') for receiving a clip (22) cooperating with two milled portions (17, 18) of the barrel. The milled portions comprise a front land and a rear land separated by a rearwardly inclined ramp (19) for holding the ring (5), interlocked for translation with the barrel (3), in position until it comes into abuttment against a pawl (30) for retaining an inertia block (4), upon an opening of the apparatus, for proper ejection of a charge case (10).

Abstract: A pallet system formed of a unitary, plastic molded, grid-like base made of intersecting, spaced apart, longitudinal and transverse strips, whose upper edges define a carrying surface. The lower edges of at least some of the longitudinal strips are generally coplanar to form a skid-like base support surface that may be positioned upon a conveyor. The lower edges of the remaining strips are recessed relative to the plane of the support surface. A unitary, plastic molded nest, having integral upper formations shaped to receive corresponding portions of supported articles, is rested upon the base and overlaps some of the openings in the grid-like base. Integral projections on the nest extend into their adjacent overlapped openings and engage the sides of adjacent strips for accurately positioning the nest relative to the base.

Abstract: A reel is formed of a plastic molded hub and side, disk-like flanges. The hub is made of thin-wall, cylindrical rings that are arranged end-to-end, and the flanges are made of two or more separate radial sections having radially oriented, overlapped edges that fasten together. Removable mechanical fasteners extend through passageways formed in the hub rings and through the flanges for fastening them together. The width of the reel may be varied by changing the number of rings. The diameters of the flanges may be varied by blocking off the outer portions of the mold in which the flask sections are molded to remove selected amounts of the peripheral portions of the sections for reducing the flange diameter. The hub rings and flange sections are interchangeable with like rings and sections for repair or reduced inventory purposes.

Abstract: The water filtering device of the invention comprises a cartridge for filtering suspended materials, an active carbon charge, a charge of anion and cation exchanging resins and a bacteria filtering cartridge.