Machine element or mechanism – Control lever and linkage systems – Multiple controlling elements for single controlled element
Patent
1989-03-22
1989-10-10
Herrmann, Allan D.
Machine element or mechanism
Control lever and linkage systems
Multiple controlling elements for single controlled element
74 8915, 744248B, 74441, 74459, 901 21, 901 23, 901 25, F16H 2524, F16H 5524, B25J 1700
Patent
active
048723622
ABSTRACT:
A driving mechanism having a spindle which is provided with a first helical threaded portion having a lefthand direction of rotation and with a second helical threaded portion having a righthand direction of rotation. A pair of spindle guides each engage a respective spindle threaded portion for rotating the spindle and translating the spindle in an axial direction. Each spindle guide has three pairs of runner rollers on a sleeve for centering and supporting the spindle within the sleeves. The three pairs of runner rollers on each sleeve kinematically constrain the six degrees of freedom of the spindle without overconstraint to reduce friction and binding of the spindle in the spindle guides.
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patent: 3407680 (1968-10-01), Westmoreland
patent: 4274296 (1981-06-01), Miller et al.
patent: 4518298 (1985-05-01), Yasukawa
patent: 4706515 (1987-11-01), Yasukawa
patent: 4730503 (1988-03-01), Rosenthal
Bouwens Henricus J. J.
De Peuter Willem L. G.
Kemper Nicolaas R.
Koster Marinus P.
Herrmann Allan D.
U.S. Philips Corporation
Wieghaus Brian J.
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