초록 ▼

A reel for a life-line comprising a frame, a winding member rotatably journalled in said frame and damping means connected on the one hand with the frame and on the other hand with the winding member for counteracting the rotation of the winding member, said damping means comprising at least two pis

A reel for a life-line comprising a frame, a winding member rotatably journalled in said frame and damping means connected on the one hand with the frame and on the other hand with the winding member for counteracting the rotation of the winding member, said damping means comprising at least two piston pumps axially arranged side by side in a pump housing and cam discs, the cylinder chambers of said piston pumps communicating with one another by an axial channel forming a restriction and the pistons being in contact with the surfaces of the cam discs relatively off-set by half a cam interval, said winding member extending around the damping means, said cam discs being formed by rings and each piston pump being radially arranged inside a ring, while the axial channel is in line with a bore extending from a head face of the pump housing.

대표청구항 ▼

A reel for a life-line, a frame adapted to be secured to a support, a winding member rotatably supported by said frame about a fixed axis and capable of paying out a life-line as the winding member rotates about said axis, damping means acting between said frame and said winding member for controlli

A reel for a life-line, a frame adapted to be secured to a support, a winding member rotatably supported by said frame about a fixed axis and capable of paying out a life-line as the winding member rotates about said axis, damping means acting between said frame and said winding member for controlling the rotational speed of the latter, said frame including a housing portion having a side-by-side pair of cylinder bores extending outwardly with respect to said axis to present blind inner ends and open outer ends, said bores being spaced apart to present a wall therebetween, piston means reciprocable in each bore, cam means rotatable with said winding member and surrounding said housing portion for urging one piston means inwardly into its bore while permitting the other piston means to be expelled outwardly into contact with said cam means, and a channel in said housing portion extending unidirectionally through that region of said wall of the housing portion separating said blind inner ends of said bores so as to establish direct communication therebetween, said channel being of a predetermined cross sectional area to provide selected resistance to the flow of fluid pumped back and forth between those volumes of the bores beneath said piston means.