B - Operations – Transporting – 66 – F
Patent
B - Operations, Transporting
66
F
254/118, 138/88.
B66F 3/24 (2006.01) B66B 9/04 (2006.01) B66F 11/04 (2006.01) F15B 15/16 (2006.01)
Patent
CA 1196254
ABSTRACT OF THE DISCLOSURE A first elongated support member is provided and includes first and second large and small outside cross-sectional area ends. A second cylinder member is provided and includes first and second ends sealingly and slidingly engaged with the large and small diameter ends, respectively, and defining a peripheral expansion chamber between the support member and the second cylin- der member. Structure is provided operative to admit and evacuate fluid under pressure to and from the expansion chamber. The first and second ends of the second member define large and small outside cross-sectional area ends and a third cylinder member is provided including base and far ends sealingly and slidingly engaged with the large and small ends of the second cylinder member and with a peripheral expansion zone being defined between the second cylinder member and the third cylinder member between the base and far ends of the third cylinder member. Further, structure is provided establishing communication between the expansion chamber and the expansion zone. The first elongated support member is considerably longer than the second cylinder member and the latter is longer than the third cylinder member.
432222
Macrae & Co.
Marmac Company (the)
Mccreery Robert B.
LandOfFree
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