초록 ▼

An extendable leg for a stand or similar appliance having elongate members (13,14,15) interconnected to extend and retract with respect to each other includes a first member (13), intermediate member (14) and a final member (15). The intermediate and final members have releasable locking devices (16

An extendable leg for a stand or similar appliance having elongate members (13,14,15) interconnected to extend and retract with respect to each other includes a first member (13), intermediate member (14) and a final member (15). The intermediate and final members have releasable locking devices (16,17,18) adjacent to one end of the leg engagable with the first and intermediate members respectively. Remote release devices (19) are provided for releasing the locking devices from the other end of the leg to permit when released, the first member to the extended with respect to the intermediate member and the intermediate member to be extended with respect to the final member. A further locking device (20,22,24) is provided between the intermediate and final members and is arranged to be released automatically on full extension of said first member with respect to the intermediate member to release the intermediate member for extension with respect to the final member for full extension of the leg and to re-engage automatically on completion of retraction of the intermediate member with respect to the final member.

대표청구항 ▼

[ What is claimed is:] [1.] An extendable leg for a stand or similar appliance having a plurality of elongate members interconnected to extend and retract with respect to each other, the leg including a first member, at least one intermediate member and a final member, the intermediate member having

[ What is claimed is:] [1.] An extendable leg for a stand or similar appliance having a plurality of elongate members interconnected to extend and retract with respect to each other, the leg including a first member, at least one intermediate member and a final member, the intermediate member having a first releasable locking device adjacent to a first end of the leg engagable with the first member and a remote release means for releasing the first locking device from a second end of the leg to permit, when released, the first member to extend with respect to the intermediate member wherein the final member has a second releasable locking device adjacent to the first end of the leg engagable with the intermediate member and a further remote release means for releasing the second locking device from the second end of the leg and wherein additional locking means are provided between the intermediate and final members arranged to be released automatically on full extension of the first member with respect to the intermediate member to release the intermediate member for full extension with respect to the final member for full extension of the leg and to re-engage automatically on completion of retraction of the intermediate member with respect to the final member.