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 Title: |
US4375840:
Mobile support
[ Derwent Title ]
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Country:
Kind: |
US United States of America
A PATENT [FROM BEGIN UNTIL END 2000] or PATENT ISSUED AFTER 1ST PUB. WITHIN THE TVPP i
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| Inventor: |
CAMPBELL JACK L; United States of America
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| Assignee: |
CAMPBELL JACK L
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| Published / Filed: |
1983-03-08
/ 1981-09-23
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| Application Number: |
US1981000305027
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| IPC Code: |
Advanced:
A61G 5/04;
B62D 61/00;
A61G 7/10;
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| ECLA Code: |
A61G5/10S10; A61G5/04A2; A61G5/04A6; A61G5/10S2; A61G5/10S12; B62D61/00; K61G5/10G; K61G7/10N4; K61G7/10Z4; K61G200/34;
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| U.S. Class: |
180/006.5;
180/DIG.03;
248/129;
269/017;
280/029;
280/220;
297/DIG.04;
182/002;
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| Priority Number: |
| 1981-09-23 |
US1981000305027 |
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| Abstract: |
A base frame is provided defining two pairs of opposite marginal portions with the pairs of marginal portions spaced horizontally apart in vertical planes intersecting each other and the marginal portions of each pair spaced on opposite sides of the point of intersection of the planes. A first pair of omnidirectional support structures are mounted from a first pair of the marginal portions and a second pair of reversely and variably drivable support structures are steerably mounted from the second pair of marginal portions for angular displacement about upstanding axes relative to the second pair of marginal portions. Further, steering control structure is operably connected between the frame and the second pair of support structures operable to selectively, variably and equally angularly displace the second pair of support structures relative to the second marginal portions. A pair of extendible uprights are mounted at their lower ends from the frame for equal angular displacement about a first horizontal axis extending therebetween and equal angular displacement about horizontal axes generally normal to the first axis. A brace is pivotally connected between the upper extendible ends of the uprights and includes a sleeve thereon oscillatable about its longitudinal axis and a support arm projects outwardly from the sleeve and is longitudinally extendible. The outer extendible end of the arm supports an operator mount therefrom for adjustable angular displacement about a horizontal axis transverse to the support arm.
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| Maintenance Status: |
E2 Expired Check current status
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| INPADOC Legal Status: |
| Gazette date |
Code |
Description (remarks) List all possible codes for US |
| 1991-05-21 |
FP - |
Expired due to failure to pay maintenance fee
( 1991-03-10 )
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| 1991-03-10 |
LAPS - |
Lapse for failure to pay maintenance fees
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| 1990-10-09 |
REMI |
Maintenance fee reminder mailed
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| 1986-08-13 |
FPAY + |
Fee payment
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