| http://www.w3.org/ns/prov#value | - In the embodiment shown, gas spring 40 is vertically mounted with piston portion 44 pointing down and lower end portion 45 of piston portion 44 passing through an opening 36 (to be described) of a support plate 30 (to be described) and secured thereto by conventional means such as nuts secured to external threads (not shown) on the end portion 45.
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