Spring devices – Elastic extension devices – Compression spring
Patent
1981-12-17
1984-06-26
Halvosa, George E. A.
Spring devices
Elastic extension devices
Compression spring
24 68CT, 24 68TT, 267162, 403166, F16F 302, F16F 132
Patent
active
044562330
ABSTRACT:
A tensioning device for chains such as tensioning chains, sling chains, tire chains and the like with a tensioning unit having at least one tensioning spindle which is connected with a tensioning nut and having at least one damping spring. The damping spring is a cup spring package and the cup spring package is installed in the tensioning unit. A multiplicity of the cup springs of the spring package can have a single layer and the remaining cup springs can have multilayer arrangement. More than half of the spring path, preferably approximately 80% of the entire spring path of the spring package is preloaded with a half force which is at least smaller by approximately one half than the preloading force of the remaining spring path. A control device has an indicator connected with a tensioning spindle and this indicator such as a bolt is movable, preferably is journalled longitudinally shiftable in a housing opening. The bolt is located approximately radially with respect to the tensioning spindle and preferably is secured to an abutment or ring at one end side thereof such as a plate and the bolt projects with another end into the housing having an opening therein.
REFERENCES:
patent: 703713 (1902-07-01), Smith et al.
patent: 716633 (1902-12-01), Hains et al.
patent: 720199 (1903-02-01), Wahl
patent: 912927 (1909-02-01), Winans
patent: 2273753 (1942-02-01), Gelinas
patent: 2387266 (1945-10-01), Holland
patent: 2595642 (1952-05-01), Daland
patent: 3466024 (1969-09-01), Spieth
patent: 3759351 (1973-09-01), Purple
patent: 3871193 (1975-03-01), Young
patent: 4183510 (1980-01-01), Kontis
patent: 4215733 (1980-08-01), Rieger et al.
Eisen - und Drahtwerk Erlau Aktiengesellschaft
Halvosa George E. A.
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