Bridges – Gangway – ramp – or dock leveler
Patent
1989-03-02
1990-05-01
Novosad, Stephen J.
Bridges
Gangway, ramp, or dock leveler
254 88, E02C 300
Patent
active
049205960
ABSTRACT:
A two level car wheel elevating device for elevating the front wheel (146) of a car having a bumper assembly (117) and comprising, first (100), second (102), third (104), and a fourth (106) top level wheel tread segments joined together to form a continuous wheel ramp surface over which the car wheel (146) can travel from ground level (142) to the fourth top level wheel tread segment (106) with a minimum of discontinuities, a pair of vertically positioned sidewalls (108, 110, and 112) positioned on either side of the wheel ramp surface and firmly secured to the wheel ramp surface to support the weight of the front or back car wheels on the wheel ramp surface, the top perimeters (136) of the sidewalls extending above the wheel ramp surface a substantially constant distance to reduce the chance of said front wheel of the car from rolling off the side of the wheel elevating device. The first segment comprises a first entrance ramp (100) extending from ground level (142) to the second segment (102) a distance G above ground level with a slope .beta., with the second segment (102) being level and extending from the top of the first ramp horizontally a distance L at an elevation G above ground level, with the third segment comprising a second ramp segment (104) with a slope .alpha., where .alpha.<.beta. and extending from the level second segment (102) to the fourth top wheel tread level (106) an approximate distance H from ground level, and the fourth segment (106) comprises a second and final substantially horizontal segment which is the highest ramp device level and the level upon which the car wheel comes to rest. A suitable connector such as bolts and nuts are provided to secure the wheel elevating device securely together at two or more substantially vertical places and to disconnect the wheel elevating device for stacking and storing purposes.
REFERENCES:
patent: 1879123 (1932-09-01), Davis
patent: 2272334 (1942-02-01), Laurent
patent: 3178156 (1965-04-01), Rigers
patent: 3638910 (1972-02-01), Nellis et al.
patent: 3752441 (1973-08-01), Rogers
patent: 3856264 (1974-12-01), Thumma
patent: 3915430 (1975-10-01), Chromy et al.
patent: 4165862 (1979-08-01), Bennett
patent: 4427179 (1984-01-01), Price
patent: 4836501 (1989-06-01), Baer
Melius TerryLee
Novosad Stephen J.
Phillion Donald W.
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