Material or article handling – Self-loading or unloading vehicles – Successive handling means
Patent
1992-01-07
1993-09-14
Werner, Frank E.
Material or article handling
Self-loading or unloading vehicles
Successive handling means
221185, 404 6, 414917, 414501, 414503, 414528, 414555, 4147978, 4147953, 4147915, 198373, B65G 6702
Patent
active
052443345
ABSTRACT:
An apparatus for installing and retrieving road signs has a conveyor for conveying a group of road signs, a pair of group of signs-conveying members for conveying the group of road signs while supporting both sides of a bottom portion of the group of road signs, a driving device for changing over the road sign to a support-releasing condition, a pair of sign-receiving elements arranged at sign-separating positions, a moving device for causing the pair of sign-receiving elements to approach and separate, a sign-ascending and descending device for supporting and causing the road sign to ascend and descend, a device for correcting the posture of the road sign, a sign-holding device for releasably holding the road sign, a position-changing device for shifting the sign-holding device from a position where the sign is separated to a position where the sign is installed and retrieved, and a holding device-ascending and descending mechanism for causing the sign-holding device to ascend and descend at the position where the sign is installed and retrieved. These are carried on a loading platform of a travelling vehicle body.
REFERENCES:
patent: 3750900 (1973-08-01), Piercey
patent: 4747515 (1988-05-01), Kasher
patent: 4936485 (1990-06-01), Downing
patent: 5054648 (1991-10-01), Luoma
Akita Satoshi
Sugii Masanori
Yonemori Toshiya
Shinmei Industry Co., Ltd.
Werner Frank E.
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