Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1977-02-03
1978-05-23
DiPalma, Victor A.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29DIG47, 29460, 295274, 264263, 264271, 301 53, 301 57, B21D 5326
Patent
active
040902838
ABSTRACT:
Globular rollers are provided herein. The rollers include one globular or two semi-globular segments of rigid structurally strong material. If it is formed of two semi-globular segments, one of the semi-globular segments is provided with a male flange, and the other of the semi-globular segments is provided with a female recess. The two semi-globular segments are joined at the male flange/female recess seam. Whether it is formed of one globular or two semi-globular segments, a resilient material is coated thereon, and, if necessary permanently joining the two semi-globular segments together. The roller is also provided with a pair of diametrically opposed, aligned apertures or identations disposed within a pair of diametrically opposed flattened chords of the globular rollers. The apertures or indentations are preferably provided with bearing surfaces, e.g. ball bearings or rollers bearings.
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patent: 3072169 (1963-01-01), Hastings, Jr.
patent: 3170235 (1965-02-01), Williams
patent: 3757383 (1973-09-01), Iiyoshi et al
patent: 3936061 (1976-02-01), Wada
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