초록 ▼

For indicating relative rotational displacement between a fixed first member, such as a stud (20) on a wheel hub, and a second member, such as a wheel nut (22), which is rotatably engaged with the first member, a safety device (24) comprises a body (26) having a bore formed with equispaced grooves e

For indicating relative rotational displacement between a fixed first member, such as a stud (20) on a wheel hub, and a second member, such as a wheel nut (22), which is rotatably engaged with the first member, a safety device (24) comprises a body (26) having a bore formed with equispaced grooves enabling the device to be releasably secured to the second member (22) in one position of a plurality of positions and having indicating means, such as a pointer (28), to indicate the position of the device (24) relative to a reference, such as a mark (32) on the rim (16) covering the wheel hub (14). The bore within the body (26) is closed at one end, e.g. by bevelled top wall (36), so that the body additionally serves as a dust cap for the conjoined first and second members (20, 22).

대표청구항 ▼

1. A safety device for use with a reference to indicate relative rotational displacement between a first member and a second member which are relatively rotatably engaged with each other, the device comprising:a body having a bore formed with equispaced grooves enabling the device to be releasably s

1. A safety device for use with a reference to indicate relative rotational displacement between a first member and a second member which are relatively rotatably engaged with each other, the device comprising:a body having a bore formed with equispaced grooves enabling the device to be releasably secured to the second member in one of a plurality of positions; a cap which fits into or onto one end of the body to close off the bore, the cap being non-rotatably mounted into or onto one end of the body and being removable to allow inspection of or access to the engaged first and second members; and a pointer attached to either said body or said cap, that indicates the position of the device relative to the reference, wherein the body, the cap and the pointer are formed separately with the pointer being non-rotatably mounted upon the body.