公开(公告)号：GB2250202A

公开(公告)日：1992-06-03

申请号：GB9025939

申请日：1990-11-29

Applicant: STEWART MARK JOSEPH ROBERTSON

Inventor： STEWART MARK JOSEPH ROBERTSON

IPC: A63B45/02 ,  A63B71/00

Abstract: Billiard, snooker or pool balls comprise markings recessed into their surface allowing them to be identified by touch alone and thus distinguished from similar balls.

公开(公告)号：GB2269572A

公开(公告)日：1994-02-16

申请号：GB9217024

申请日：1992-08-11

Applicant: STEWART MARK JOSEPH ROBERTSON

Inventor： STEWART MARK JOSEPH ROBERTSON

IPC: B60R25/00

Abstract: An anti-theft brake control unit for a vehicle comprises means controlled by a security device to lock the brake in its engaged state. The unit may comprise a ratchet action lever 1 to operate a brake in which the ratchet serves to hold the lever so that the brake is engaged and the security device comprises a lockable button 4 to prevent disengagement of the ratchet. The security device may be a combination lock or preferably a key operated lock 6.

公开(公告)号：GB2264561A

公开(公告)日：1993-09-01

申请号：GB9203323

申请日：1992-02-18

Applicant: STEWART MARK JOSEPH ROBERTSON

Inventor： STEWART MARK JOSEPH ROBERTSON

IPC: A61F9/08 ,  G01F23/30 ,  G01F23/56

Abstract: A finger-atachable device for sensing liquid levels by lowering it to the surface of a liquid comprises a member (1) which is preferably a housing which is adapted to fit a human finger, a float or piston (6) which is held in moveable relationship to the member and which, when the device is downwardly directed, is lower than the member and which is lifted relative to the member when it contacts a body of liquid and thereby brings an element (4) into contact with a finger in the member whereby the level of the liquid is sensed by the user of the device by touch. The housing may comprise a resilient member adapted to grip a human finger or a substantially non-resilient structure which maybe of thimble shape. The float may be surrounded by a member to protect it from damage and which may be removable for cleaning. The element (4) may be part of or an extension of the float. The device may be used with food or drink, hot, cold or dangerous liquids and by blind people.