Kabushiki Kaisha Morita Seisakusho

Dai-ichi Kogyo Seiyaku Co., Ltd.

Hiroshi Sugai

Haruo Ogawa

Shoji Nakayama

Masanori Wakui

Masahisa Ibuki

Moist pellet feed for breeding fish comprising (A) not less than 50 parts by weight of a raw feed, (B) not more than 50 parts by weight of a powdery mixed feed, and (C) a sodium carboxymethyl cellulose which has free carboxylic acid groups in the molecule and which, as a 1% aqueous solution at 25.degree. C., has a viscosity of not less than 1000 cps, wherein an equivalent ratio of free carboxylic acid groups to sodium carboxylate groups in said sodium carboxymethyl cellulose is preferably from 0.005:1 to 0.02:1, and the amount of said component (C) is from 0.5 to 10% by weight based on the total amount of said components (A) and (B). By using the specific binding agent, the moist pellet feed has a proper hardness and little to not stickiness.

Moist pellet feed for breeding fish

This invention relates to a dental handpiece including turbine blades to be driven by a high-speed fluid under pressure to a turbine rotor chucking a cutting shaft, and blades are provided with openings or cutout portions located at both outside ends in a thrust direction of the blades so as to provide flange portions between the openings and the end portions of the blades and the peripheral width of the blades is larger than that of the high-speed fluid supply apperture.

Dental handpiece

A method of lubricating a dental hand-piece wherein a small-sized lubricating oil sealed oiler is detachably mounted in a position adjacent to the rotor side of a rotor driving air passageway of a dental hand-piece device, the lubricating oil from said oiler is continuously mixed into rotor driving air to atomize said oil by utilizing the pressure and flow rate of said rotor driving air when said hand-piece is in use, and the mist oil thus obtained is supplied together with said air to said rotor to thereby continuously lubricate the rotor; and a novel small-sized oiler used in the method; are disclosed.

Method of lubricating dental hand-piece and small-sized oiler for use

This invention relates to a driving mechanism of an air bearing journaled handpiece for dental treatment, the mechanism being improved in that even when a load contrary to the direction of rotation of a tool shaft such as cutting of the teeth acts upon the tool shaft in a dental operation, rotation of the tool shaft does not stop because of load resistance but enables the heretofore, unmaterialized medium-speed cutting (hereinafter referred to as 'extension to medium-speed rotation') and makes it possible to obtain improved torque during high-speed rotation in addition to the extension to medium-speed rotation.

Air bearing for a dental handpiece

A cartridge-type chuck for use in a dental handpiece wherein a substantially cylindrical cartridge case incorporates within itself at least a friction-type chuck body and a stopper provided with a square hole of a smaller diameter than the inner diameter of said chuck body, said cartridge case being formed at its front part into truncated cone by tapering the outer circumferential surface and is provided at its thickened rear part with a threaded interface on the circumference, is disclosed. This cartridge-type chuck is able to be loaded and unloaded for the purpose of replacing it with ease in relation to the rotor disposed in the inside of a dental hand-piece, into which the dental cutting tool can be inserted by a single step, and whose holding power is strong enough to be free from occurrence of the center whirling of the spindle of said cutting tool.

Growing community of inventors

Kyoto, Japan

Hiroshi Sugai