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Machine translation
1. (WO1997036061) COUNTERWEIGHT FOR CONSTRUCTION EQUIPMENT AND METHOD OF MANUFACTURING SAME
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1997/036061    International Application No.:    PCT/JP1997/000232
Publication Date: 02.10.1997 International Filing Date: 31.01.1997
Chapter 2 Demand Filed:    31.01.1997    
IPC:
B66C 23/74 (2006.01), E02F 3/34 (2006.01), E02F 9/18 (2006.01)
Applicants: KOMATSU LTD. [JP/JP]; 3-6, Akasaka 2-chome, Minato-ku, Tokyo 107 (JP) (For All Designated States Except US).
YASUMIZU, Akira [JP/JP]; (JP) (For US Only).
MATSUSHITA, Shigenori [JP/JP]; (JP) (For US Only).
KAWAHASHI, Toshinori [JP/JP]; (JP) (For US Only).
SATO, Yoshito [JP/JP]; (JP) (For US Only)
Inventors: YASUMIZU, Akira; (JP).
MATSUSHITA, Shigenori; (JP).
KAWAHASHI, Toshinori; (JP).
SATO, Yoshito; (JP)
Agent: HASHIZUME, Yoshihiko; Komatsu Building, 8F, 3-6, Akasaka 2-chome, Minato-ku, Tokyo 107 (JP)
Priority Data:
8/97578 27.03.1996 JP
Title (EN) COUNTERWEIGHT FOR CONSTRUCTION EQUIPMENT AND METHOD OF MANUFACTURING SAME
(FR) CONTREPOIDS POUR EQUIPEMENT DE CONSTRUCTION ET SON PROCEDE DE FABRICATION
Abstract: front page image
(EN)The present invention relates to a counterweight for construction equipment and a method of manufacturing the same, said counterweight enabling work in a small place, presenting a beautiful appearance and being inexpensive and easy to recycle. A counterweight (10) is such that at least one surface (N) of an integrally formed outside shape defines an armor and a specific gravity of a material for the counterweight exceeds 7.85 g/cm?3¿. Further, a method of manufacturing a counterweight comprises forming an outside counterweight (30), of which at least one surface of an outside shape defines an armor, by means of at least one of press working, roll forming and sheetmetal welding, covering the outside counterweight (30) with an upper die (33), to which a releasing material is applied, to then inject lead thereinto, and dismounting the upper die (33) after cooling.
(FR)L'invention concerne un contrepoids pour un équipement de construction et son procédé de fabrication. Ledit contrepoids permet de travailler dans un endroit exigu, est très esthétique, bon marché et facile à recycler. Il (10) est conçu de sorte qu'au moins une surface (N) de forme extérieure monobloc définit une armure et que le poids spécifique du matériau constituant ledit contrepoids dépasse 7,85 g/cm?3¿. De plus, le procédé de fabrication dudit contrepoids consiste à former un contrepoids extérieur (30) dont au moins une surface définit une armure, au moins par moulage à pression, laminage et/ou soudage de tôles, à recouvrir ledit contrepoids extérieur (30) d'une matrice supérieure (33) sur laquelle un matériau de démoulage est appliqué, avant l'injection de plomb à l'intérieur de celle-ci et à démonter la matrice supérieure (33) après refroidissement.
Designated States: CN, KR, US.
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)