Nippon Soken, Inc.

Other

Otics Corporation

Nakanishi Metal Works Co., Ltd.

Akira Takeuchi

Takayuki Fujikawa

Norio Yamamoto

Kenji Takigawa

Katsuhide Kikuchi

Hitoshi Hayashi

Masaaki Ozaki

Naoki Hiramatsu

Kimihiko Todo

Yuichiro Yamada

Yoshio Kawatake

Tomiyasu Hirano

Toshio Yamamoto

A rocker arm that is rockably attached to a cylinder head actuates a valve by a guide groove that is formed at an end thereof engaging with an upper end of a valve stem, and a roller that is mounted in a roller housing portion of the arm main unit contacting against a cam and rocking. The guide groove is formed by press working ends of the arm main unit in the thickness direction of the plate material to form a pair of walls, and thereafter applying sandwiching pressure in the lateral direction to the walls to increase the height thereof.

Rocker arm and method of manufacturing same

An antiferroelectric liquid crystal composition having a chiral smectic C,* phase composed by blending liquid crystal composition-constituting compounds having the same direction of inclination of optic axis produced by application of an electric field and/or comprised of a mixture of two enantiomers of a liquid crystal material; one having the stereosense (&plus;) and the other having the stereosense (&minus;). The stereosense is defined so that, when the molecule is viewed so that the bond between the core group and the asymmetric carbon is behind the asymmetric carbon atom, the stereosense is (&plus;) if the remaining three groups (or atoms) are arranged clockwise in order of length of the groups (or, if the groups are the same length, in order of their volume), and the stereosense is (&minus;) if the groups are arranged counter clockwise.

Antiferroelectric liquid crystal composition

A liquid crystal cell and liquid crystal display device include: two electrode substrates facing each other through a plurality of spacers; each electrode substrate being formed by superimposing a glass substrate, a transparent electrode and an alignment film; and an antiferroelectric liquid crystal being injected between alignment films; wherein, an alignment treatment is performed to each alignment film so that an angle of layer rotation of the antiferroelectric liquid crystal is defined within a predetermined allowable range.

Liquid crystal cell and liquid crystal display device using an antiferroelectric liquid crystal

The antiferroelectric liquid crystal composition comprising at least one chiralsmectic liquid crystal compound having a positive specific rotatory power �.alpha.!.sub.D.sup.25 and at least one chiralsmectic liquid crystal compound having a negative specific rotatory power, and the value of the specific rotatory power of the composition is between -25.degree. and +25.degree. C. This invention provides a method for blending liquid crystal compounds to form an antiferroelectric liquid crystal composition which has a decreased dark luminance of a liquid crystal display element.

Antiferroelectric liquid crystal composition and liquid crystal display

An antiferroelectric liquid crystal composition comprising a liquid crystal composition having the chiralsmectic C.sub.A phase and a compound represented by the formula (I) shown below: ##STR1## wherein X is --CH.sub.3, --CF.sub.3 or --C.sub.2 H.sub.5 ; R.sup.1 and R.sup.2 are straight-chain or branched alkyl radicals having 3 to 14 and 3 to 10 carbon atoms respectively; Y represents a single bond, or --O--, --CO--, --COO-- or --OCO-- radical; Z represents --COO--, --C.tbd.C-- or --CH.sub.2 CH.sub.2 -- radical; and A.sup.1, A.sup.2 and A.sup.3 independently represent a six membered ring including benzene rings, cyclohexane rings, pyridine rings, and pyrimidine rings, at least one hydrogen of which six membered rings may be replaced by a fluorine atom, chlorine atom, bromine atom, cyano group, nitro group, methyl group, ethyl group or methoxy group.

Growing community of inventors

Nishio, Japan

Akira Takeuchi