Excavating – Snow or ice removing or grooming by portable device – Vehicle mount with obstacle responsive trip – or yieldable tool
Patent
1988-12-19
1991-05-28
Taylor, Dennis L.
Excavating
Snow or ice removing or grooming by portable device
Vehicle mount with obstacle responsive trip, or yieldable tool
37234, 37266, 37279, E01H 504
Patent
active
050182846
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a snow plow having a variable curved surface which is mounted in front of a vehicle for removing the snow.
BACKGROUND ART
A conventional snow plow for vehicles has a metallic rigid body structure having a predetermined curved surface, as shown in FIGS. 1 and 2.
In such a conventional snow plow having a rigid body structure, the thrust angle (the edge angle .theta..sub.1, the back angle .theta..sub.2), as shown in FIG. 3; the cutting angle .theta..sub.3, the snow throwing angle .theta..sub.4, the length L of the flat portion 5, the radius of curvature R and the height H of the curved portion 6 as shown in FIG. 4; and the size B of the snow cleaning orifice 7 as shown in FIG. 5 are all respectively invariable.
Due to the invariability of each part mentioned above the conventional snow plow can not accommodate the various, diverse environments such as the quantity and type of the snow which is to be removed, the configuration of the road, the speed of the snow removing vehicle and the atmospheric condition. Also due to invariability of the cutting angle .theta..sub.3, the breaking ability of the conventional snow plow results in inefficiency in removing the snow and/or in difficulty in breaking the snow.
Furthermore, it is difficult to select the most efficient position for removing the maximum quantity of snow and the distance for throwing the snow can be selected only by controlling the speed of the vehicle. This is particularly important if houses are situated roadside. Therefore, a conventional snow plow is very inconvenient.
DISCLOSURE OF THE INVENTION
An object of this invention is to solve the above-mentioned problems of the conventional snow plow.
In this invention, the above mentioned problems are solved by utilizing the following constructions. Namely, a snow plow according to the invention is mounted onto a fixing member installed in front of the snow removing vehicle, and the plow is made of material which has elastic properties. In back of the plow each set is constructed with universal joints and a hydropneumatic cylinder, and the curved surface of said snow plow can be varied into the desired configuration by telescoping said telescopical cylinders. In this invention, the vehicle is an ordinary four-wheel truck, a crawler (endless chain threads) tractor, a car on rails or others.
Further scope of applicability of the present invention will become apparent from the detailed description given hereinafter. However, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
BRIEF DESCRIPTION OF DRAWINGS
The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus, are not limitative of the present invention, and wherein:
FIG. 1 is a front view of a conventional snow plow mounted on a snow removing vehicle;
FIG. 2 is a perspective view of the conventional snow plow;
FIG. 3 is a schematic plan view of the conventional snow plow;
FIG. 4 is a schematic side view of the conventional snow plow;
FIG. 5 is a schematic plan view of the snow cleaning orifice in the conventional snow plow;
FIG. 6 is a plan view of the snow removing vehicle with a mounted snow plow having variable curved surface of the present invention;
FIG. 7 is a side view of the essential part in accordance with the present invention;
FIG. 8 is an enlarged plan view of the essential part in accordance with the present invention;
FIG. 9A is an enlarged side view of the essential part in accordance with the present invention;
FIG. 9B is a cross-sectional view of the area indicated by circle A in FIG. 9A of the present invention;
FIG. 10 is a schematic side view of the other embodiment in acc
REFERENCES:
patent: 4019587 (1977-04-01), Meisel, Jr.
patent: 4552226 (1985-11-01), Platter
Mikami Shiro
Nagahara Yoshio
Ooshima Seiju
Japan as represented by Director of Construction Machinery Works
McBee J. Russell
Taylor Dennis L.
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