| 摘要 |
1,072,249. Castors. UP-RIGHT Inc. Sept. 27, 1965 [Oct. 30, 1964], No. 40996/65. Heading A4U. A castor with wheel 10 clamped to an axle (12) by a U-shaped locking lever 15 which is pivoted to a housing 22 has a brake member 32 of steel rod pivotally secured to the housing and engageable with the wheel when the latter is moved by lowering lever 15 the arrangement being such that the angle α2 between a vertical line through the wheel axis and a line extending from the axis to the point of engagement of the brake with the wheel is equal to 180-2α1 where α1 is the angle between the said vertical line and a line extending through the wheel axis and the pivot of the lever 15 when it is in the unlocked position. |
