Vacuum held crawler

Details Vacuum held crawler Vacuum held crawler

B - Operations, Transporting

62

D

180/4.5

B62D 57/024 (2006.01) E04G 23/00 (2006.01)

Patent

CA 2018708

A B S T R A C T A vacuum held crawler capable of substantially reducing frictional resistance between a wall of a building and the crawler, thus increasing the efficiency and reducing the power required for driving the crawler. A flexible seal member is arranged so as to surround a recess of a vacuum chamber and vertically project by a suitable length from the bottom of the vacuum chamber. A low friction member is mounted on the distal end of the seal member. The seal member and low friction member have thin walls. Such construction permits the flexible seal member to be in close contact by means of the low friction member with the wall while being held on the wall by the low friction member by suction, thereby preventing the bottom of the vacuum chamber from coming into contact with the wall.

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