Mabuchi Motor Co., Ltd.

Other

University of Massachusetts

Tanaka Kikinzoku Kogyo K.k.

Yasuhiro Hashimoto

Toshiya Yamamoto

Keiji Nakamura

Masahiro Takahashi

Takao Asada

Yasuhiro Yamagata

Osamu Sakaguchi

Stuart J Swiedler

Shuichi Kubota

Kengo Taneichi

Masayuki Ishihara

Hideyuki Uzawa

Takemasa Honma

Zheng Wei

Ariel Orellana

Carlos B Hirschberg

Provided is a brushed motor in which noise in a high rotational speed range is effectively decreased. A bar-shaped flat attachmentof synthetic resin is inserted along an axial line L into an opening of a slotformed in a coreof a rotor, and fixed with respect to the coreand/or windingsusing adhesive agent. The flat attachmenthas side surfacesand an inner peripheral surface. The side surfacesare engaged from an inner peripheral side with inclined surfacesof teethadjacent to each other across the opening of the slot. The inner peripheral surfaceof the flat attachmenthas two ridgesprotruding therefrom which are abutted against the windings. The flat attachmentcloses the opening of the slotand shapes an outer peripheral surfaceof the coreinto a flat cross sectional shape suitable for suppression of wind noise.

Brushed motor

The invention provides a material for sliding contacts that is suitable for a small-sized DC motor used in recent downsized CD players and is excellent in durability. A material for sliding contacts used in a commutator of a small-sized DC motor that consists essentially of 0.01 to 3.0% Ni by weight, 0.01 to 6.0% ZnO by weight and/or 0.01 to 3.0% MgO by weight, furthermore, in some cases, 0.01 to 5.0% Cu by weight, and the balance Ag, in which Ni metal particles, ZnO particles or MgO particles are dispersed in the matrix of Ag.

Material for sliding contacts, clad composite material and small-sized DC motor using the same

The present invention is aimed at providing a sliding contact material that has an alloy composition containing no harmful substance like Cd, especially excellent contact resistance properties, electrical functions that are good and is not subject to secular change, and abrasion resistance practically bearing comparison with conventional sliding contact materials, and is aimed at lengthening the life of a motor by the use of a sliding contact material having excellent durability as a commutator for a small direct-current motor. The present invention is a sliding contact material of an Ag&mdash;Ni-based alloy that is used in sliding part electrically switching on and off by mechanical sliding action, and the material is a sliding contact material of Ni metal particle-dispersed-type Ag&mdash;Ni-based alloy that is produced in such a method that 0.7 to 3.0 wt. % Ni powder, an additive of Li CO powder corresponding to 0.01 to 0.50 wt. % Li after being converted to metal and the balance of Ag powder are mixed and stirred to form a uniformly dispersed mixture, then the mixture is treated with forming and sintering processes.

Sliding contact material comprising Ag-Ni based alloy having Ni metal particles dispersed and clad composite material, and Dc compact motor using the same

DNA encoding a polypeptide capable of catalyzing the deacetylation and sulfation of a glycosaminoglycan; production and isolation of recombinant and synthetic polypeptides capable of catalyzing the deacetylation, sulfation or both the deacetylation and sulfation of a glycosaminoglycan; antibodies to the polypeptides of the invention; and therapeutic uses of these compounds are disclosed.

Glycosaminoglycan specific sulfotransferases

Growing community of inventors

Chiba, Japan

Yasuhiro Hashimoto