US 6,981,440 B2 | ||
High-speed cylinder apparatus | ||
Hideo Hoshi, 19-14, Maru-no-uchi 3-chome, Naka-ku, Nagoya-shi, Aichi-ken (Japan) | ||
Filed on Dec. 19, 2002, as Appl. No. 10/322,641. | ||
Claims priority of application No. 2001-397068 (JP), filed on Dec. 27, 2001. | ||
Prior Publication US 2003/0121411 A1, Jul. 03, 2003 | ||
Int. Cl. F01B 15/00 (2006.01) |
U.S. Cl. 92—66 | 1 Claim |
1. A high-speed cylinder apparatus comprising a machine bed(11) which is comprised of a front stationary table(12), a front stationary member (13), a rear stationary member (14) and a rear stationary table (15), arranged in this order, stationary rods (18) which are secured between the front stationary member and the rear stationary member, and a movable cylinder (20) through which the stationary rods extend,
said movable cylinder being provided with an inner cylinder chamber (21) and an outer cylinder chamber (31) which surrounds the inner cylinder chamber,
said inner cylinder chamber being provided with an inner piston (22) inserted therein, which is integrally secured to the stationary rods, said inner cylinder chamber being provided with an
inner front inlet (25), an inner rear inlet (26), an inner rear outlet (27) and an inner front outlet (28), for working fluid to move the movable cylinder,
said outer cylinder chamber being provided therein with an outer piston (32) having a front operation member (33) which is moved close to or away from the front stationary table and a rear operation member (34) which is moved close to or away from the rear stationary table, said outer cylinder chamber being provided with an outer
rear inlet (35) which is connected to the inner rear outlet and an outer front inlet (36) which is connected to the inner front outlet, for the working fluid to move the outer piston.
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