Castors

Claim 2

A castor comprising a support adapted to carry a wheel for rotation about a generally horizontal axis and wherein the support is adapted to turn about a castor axis and including means adapted to releasably lock the support against turning about the castor axis.

Claim 3

A castor having a wheel and having means adapted to releasably lock the wheel against turning about the castor axis.

Claim 4

A castor having a wheel and having means adapted to releasably lock the wheel against turning about the castor axis.

Claim 5

A castor as claimed in claim 2, wherein said means is biased to a condition in which it can lock the wheel as aforesaid and against which bias said means can be moved to unlock the wheel against said turning.

Claim 6

A castor as claimed in claim 3, wherein said bias is provided by gravity.

Claim 7

A castor as claimed in any one of claims 2 - 4, wherein said means comprises a latch comprised of a first latch part carried by means extending on said castor axis and a second latch part carried by or forming part of, a support for said wheel, which support being rotatable about said castor axis,

Claim 8

'A castor as claimed in claim 5, wherein the first latch part comprises a projection which is mounted to said means extending on said castor axis to pivot about a generally horizontal axis and which is biased to a down position by gravity but which can be moved to an up position against gravity and the second latch part comprises an aperture forming part of, or carried by, said support into which the pin can enter when the support is in a particular angularly rotated orientation about the castor axis.

Claim 9

A shopping or supermarket trolley comprising a castor having a wheel and having means adapted to releasably lock the wheel against turning about the castor axis; and wherein said means includes an abutment capable of being abutted against and moved to put said means adapted to releasably lock in the unlocked condition.

Claim 10

A shopping or supermarket trolley comprising a castor having a wheel and having means adapted to releasably lock the wheel against turning about the castor axis; and wherein said means includes an abutment capable of being abutted against and moved to put said means adapted to releasably lock in the unlocked condition.

Claim 11

A shopping or supermarket trolley as claimed in claim 7 and constructed and arranged such that nesting of another such trolley within that trolley will cause movement of said abutment as , aforesaid.

Claim 12

A shopping or supermarket trolley as claimed in claim 8, wherein said another such trolley has a frame part adapted to abut against said abutment to cause movement of said abutment as aforesaid.