摘要:
This invention relates to a gas barrier properties imparted label for polyethylene terephthalate bottles. In accordance with the present invention there is provided a barrier label for PET beverage bottles comprising an outer protective layer of a thermoplastic polymer, a barrier layer selected from the group consisting of polyvinyl alcohol and ethylene vinyl alcohol copolymers, an inner protective layer of a thermoplastic polymer, and an optional, opaque thermoplastic layer, wherein the label reduces the carbon dioxide permeability of the section of the beverage bottles enveloped by the label to below 1 cc/100 in.sup.2 /24 hr.
摘要:
The flow switch assembly (10) of a fluid power apparatus comprises a fluid flow pressure operated switch (10) which activates upon the failure or degradation of fluid flow. A body (14) contains therein a blind bore (15) which receives a piston (71) biased by a spring (17) located at the bottom (13) of the bore (15). A switch housing (11) which is molded about a contact (20) is threadedly inserted into an open threaded end (16) of the bore (15). The bore (15) communicates with a fluid flow opening such that fluid pressure causes the piston (71) to retract against the spring (17). The contact (20) extends axially beyond a wall (11A) of the switch housing (11) such that a radially enlarged portion (21) provides a seat for a seal (30) which sealingly engages the radially enlarged portion (21) and a surface of the bore (15). If fluid flow should cease or fall below a predetermined pressure level, the piston (71) is displaced by the spring (17) and engages the contact (20) to complete a circuit and energize an electric motor pump which provides fluid pressure to the associated fluid power apparatus.
摘要:
This invention relates to mixtures of short fibers of varying lengths, diameters and aspect ratios composed of an anisotropic polymer, to compositions containing said fibers and one or more thermoplastic or thermoset resins, and to a process for forming said mixtures.
摘要:
A process for forming a high temperature oxidation resistant coating on a carbon-carbon composite is disclosed and claimed. The process comprises applying a cyclosiloxane monomer blend containing a filler such as silicon carbide to a carbon-carbon composite, polymerizing and pyrolyzing said blend to form a filled black glass protective coating on the carbon-carbon composite.
摘要:
Solid bodies having a reflective surface are provided with an anti-reflection coating of a terpolymer composition derived from (a) perfluoroalkylalkyl acrylate or methacrylate, (b) acrylic, methacrylic or itaconic acid, and (c) hydroxyl- containing acrylate or methacrylate.
摘要:
Azeotrope-like compositions comprising 4-trifluoromethyl-1,1,1,2,2,3,3,5,5,5-decafluoropentane and a second component selected from the group consisting of methanol; ethanol; 1-propanol; 2-propanol; 2-methyl-2-propanol; 2-methyl-2-butanol; n-hexane; isohexane; 2-propanone; and 2-butanone and optionally nitromethane are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.
摘要:
A method of assembling an air bag comprising the steps of: providing at least one piece of material used to form the air bag; placing generally near a first edge of the material which is to be sewn a series of target markings; providing generally near a second edge of material to be sewn to the first edge a series of indicator markings; overlaying the first and second edges together; and sewing the edges together along a preferred sew line such that the indicator markings fall within the target markings.
摘要:
A braking system (8) comprising: a master cylinder (10); rear brakes (12a,b) communicated to the master cylinder (10); front brakes (14a,b) hydraulically isolated from the rear brakes; an isolation valve (16; 16') interposing the master cylinder (10) and the front brakes (14a,b) having a first state communicating the master cylinder to the front brakes and a second state isolating the master from the front brakes and connecting a pump (42) to the front brakes; a motor (44) for powering the pump (42); a reservoir (54) communicated to an inlet of the pump (42); a control unit (40) for causing front brake pressure to follow rear brake pressure comprising: a first pressure sensor (30) for generating a signal indicative of rear brake pressure; electric proportioning device (94) for generating a commanded front brake pressure signal (P.sub.C); a second pressure sensor (32) for generating a signal of actual front brake pressure (P.sub.A); a comparator (96) for comparing the command brake pressure signal to the actual brake pressure signal and for generating an error signal (P.sub.E); a motor control circuit responsive to an error signal for activating the motor and for powering the pump (42).
摘要:
An arrangement and technique for decoding optical wave division multiplexed Manchester Gray coded serial binary signals is disclosed wherein synchronization information is utilized to establish a preferred timing of bits of data and then the incoming signal is monitored to detect data bits appearing within prescribed bounds of permissible timing variation from the preferred timing. When a bit is detected within these prescribed bounds, it is reset to appear at the time at which it should have occurred according to the preferred timing.
摘要:
A multiple piece seal and method for reducing the leakage of air through a narrow gap separating a higher pressure section from a lower pressure in a gas turbine engine. The seal is comprised of a first sealing member having a thickness sufficiently small so that the first sealing member will deform into sealing contact across the gap when subjected to a pressure differential, and a second sealing member having a thickness sufficiently large so as to prevent both sealing members from buckling when inserted the gap.