Machine element or mechanism – Gearing – Directly cooperating gears
Patent
1995-12-14
1998-01-06
Marmor, Charles A.
Machine element or mechanism
Gearing
Directly cooperating gears
74 8915, 403366, F16H 120
Patent
active
057042497
ABSTRACT:
A screw drive mechanism for articulated beds and the like includes a drive shaft having external screw threads, a segmented drive nut having internal threads which engage the external threads of the shaft and a drive member in which the segmented drive nut is retained. At least one spring clip is disposed radially between the segmented drive nut and the drive member and engages the same to axially position and retain the drive nut in the drive member. The arrangement provides a simpler, less expensive drive screw mechanism which can be snapped together without tools and which can be easily disassembled for servicing.
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Fenstermacher David M.
Joerns Healthcare Inc.
Marmor Charles A.
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