Machine element or mechanism – Elements – Guards
Patent
1992-06-11
1993-08-17
Lorence, Richard M.
Machine element or mechanism
Elements
Guards
74566, 384 15, G05G 2504, F16P 302
Patent
active
052358747
ABSTRACT:
The invention relates to a protective structure associated with a work unit. The protective structure includes a mobile portion having movement in two senses according to a straight direction. The protective structure also includes two rotatable support elements idle about respective mutually parallel axes which are normal to the straight direction and which are internally supported by box structures connected to the mobile portion and which are arranged on opposite sides with respect to the mobile portion with reference to the straight direction. The protective structure further includes two blinds, respectively windable about the support elements and having a first end connected to the support element and a second end connected to a fixed structure on which a kinematic connector for the support element is supported. The protective structure also includes a compensating element interpositioned between the kinematic connector and the support element so as to equalize the peripheral velocities of tracts of the blinds wound about the support element. The tracts of the blinds which are not wound about the relative support elements develop at least partially according to at least one plane parallel to the said straight direction.
REFERENCES:
patent: 995972 (1911-06-01), Larsen
patent: 1679912 (1928-08-01), Mondloch
patent: 2417671 (1947-03-01), Armitage
patent: 2417672 (1947-03-01), Armitage
patent: 2551860 (1951-05-01), Welte et al.
patent: 2615762 (1952-10-01), Gesner
patent: 2850332 (1958-09-01), Begle
patent: 4704913 (1987-11-01), Zimmer
patent: 4706510 (1987-11-01), Zimmer
Lorence Richard M.
P.E.I. Protezioni Elaborazoni Industriali S.r.l.
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