Abstract: A blind lift rod control lock includes a housing having an axle hole, a rotating member revolvably mounted in the axle hole of the housing, the rotating member having a non-circular through hole, which receives a lift rod for enabling the rotating member to be synchronously rotated with the lift rod, a reverse ratchet, and a forward ratchet, and a locking mechanism. The locking mechanism has a follower member, a first hooked portion adapted to engage the reverse ratchet, and a second hooked portion adapted to engage the forward ratchet. The follower member is selectively controlled to force the first hooked portion into engagement with the reverse ratchet or the second hooked portion into engagement with the forward ratchet.

Abstract: A primer coated, oriented polyester film material is provided wherein the primer is applied in an aqueous medium comprising a water dispersible copolyester consisting essentially of the condensation product of components A, B, C, and D or their polyester forming equivalents as follows:(A) about 60 to 75 mole percent of terephthalic acid;(B) about 15 to 25 mole percent of at least one dicarboxylic acid of the formula HOOC(CH.sub.2).sub.n COOH, wherein n ranges from about 1-11;(C) greater than from about 6 up to about 15 mole percent of at least one sulfomonomer containing an alkali metal sulfonate group attached to a dicarboxylic aromatic nucleus, and(D) stoichiometric quantities, i.e., about 100 mole percent of at least one aliphatic or cycloaliphatic alkylene glycol copolymerizable therewith having about from 2 to 11 carbon atoms.The copolyester priming layer may be applied to the polyester film at any suitable stage during manufacture of the film, i.e., before or during the stretching operations.

Abstract: A multilayer plastic film suitable for use in the manufacture of garbage and trash bags wherein the film comprises one or more layers representing at least one first outer layer and may include a core layer made with low pressure, low density polyethylene and one or more layers representing at least one second outer layer made with high pressure, low density polyethylene which may contain up to forty-two percent by weight of low pressure, low density polyethylene.

Abstract: A magnetic recording medium obtained by coating a magnetic metallic powder with a binder on a non-magnetic substrate, wherein said magnetic metallic powder is mainly made of acicular particles obtained by a dry reduction process and said magnetic recording medium has a residual magnetic flux density of greater than 2,600 gauss, a coercive force of 1,300 to 1,800 Oe, a thickness of a magnetic layer of 1.5 to 3.5 .mu.m and a C/N ratio (carrier signal/noise level) in video band of greater than 4 dB of the C/N ratio of the standard video tape.

Abstract: An ultrathin polyphenylene oxide/organopolysiloxane-polycarbonate copolymer film is described wherein the film contains from about 10 to about 35 percent by weight of the organopolysiloxane-polycarbonate copolymer.

Abstract: A glass fiber mat is prepared by piling a strand formed by collecting a number of glass fibers on a conveyor in a non-oriented state by making the strand into contact with a rotating cylinder to throw it; thus forming a mat like layer and piling another strand cutting or without cutting on said mat like layer to be a thin layer and said another strand being drawn from a cake.