Apparel – Guard or protector – Body cover
Patent
1984-12-20
1986-07-08
Schroeder, Werner H.
Apparel
Guard or protector
Body cover
414 7, 285168, 138120, A62B 1700, F16L 1118
Patent
active
045984271
ABSTRACT:
An elbow or knee joint for a hard space suit or similar usage is formed of three serially-connected rigid sections which have truncated spherical configurations. The ends of each section form solid geometric angles, and the sections are interconnected by hermetically-sealed ball bearings. The outer two sections are fixed together for rotation in a direction opposite to rotation of the center section. A preferred means to make the outer sections track each other in rotation comprises a rotatable continuous bead chain which engages sockets circumferentially spaced on the facing sides of the outer races of the bearings. The joint has a single pivot point and the bearing axes are always contained in a single plane for any articulation of the joint. Thus flexure of the joint simulates the coplanar flexure of the knee or elbow and is not susceptible to lockup.
REFERENCES:
patent: 1349060 (1920-08-01), Gall et al.
patent: 1383322 (1921-07-01), Marr
patent: 3242499 (1966-03-01), Fonda-Bonardi
patent: 3443758 (1969-05-01), Kopp et al.
patent: 3754779 (1973-08-01), Peress
patent: 3759550 (1973-09-01), Peress
patent: 4369814 (1983-01-01), Humphrey
High-Pressure Protective Systems Technology, Aerospace Div. of ASME, 9th Intersociety Conf. on Env. Sys. San Fran. Calif., Jul. 16-19, 1979.
Brekke Darrell G.
Falik Andrew M.
Manning John R.
Marchant Robert D.
Schroeder Werner H.
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