Plant growth regulating cyano-phenyl-acetamide derivatives

Details Plant growth regulating cyano-phenyl-acetamide derivatives Plant growth regulating cyano-phenyl-acetamide derivatives

A - Human Necessities

01

N

71/7.2, 71/10.5

A01N 37/34 (2006.01) A01N 43/00 (2006.01)

Patent

CA 1174866

ABSTRACT OF THE DISCLOSURE A pneumatic, piston/cylinder couterbalance in which the counterbalance force is obtained by differential pressure across the piston and in which the force changes due to temp- erature are compensated by use of a variable volume cylinder having one or more auxiliary chambers separated by walls, each including a temperature responsive by-metal disc valve normally acting as a check valve permitting flow into the auxiliary chambers but preventing flow out of the chambers except when tho temperature drops to a predetermined value. In the multiple auxilary chamber embodiment, flow into and out from each chamber is controlled by an associated bi-metal disc valve responsive to successively lower temperatures to enable a more linear stabilization of force output regardless of temperature.

371912

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