Implements or apparatus for applying pushing or pulling force – Hoisting truck – Screw
Patent
1985-12-13
1987-06-23
Schmidt, Frederick R.
Implements or apparatus for applying pushing or pulling force
Hoisting truck
Screw
248352, B60P 110
Patent
active
046747265
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a truck designed to support equipment or a vehicle, or a set of materials and designed to travel easily in any direction.
2. Description of Pertinent Information
Devices currently available for lifting, tilting, and displacing materials and other equipment to be worked on have serious disadvantages. One such device is U.S. Pat. No. 1,341,621, which relates to a truck comprising a subframe that can be adjusted by its two side members. The side members are attached by a non-adjustable cross member. The ability to adjust the support surfaces and the side members is restricted by the clearances of apertures into to which stop pins are inserted.
French Pat. No. 2,158,577 relates to a moveable bench or ramp comprising side members having blocks which can be adjusted by placing pins in various openings in the device.
German Pat. No. 3,200 relates to a device having two telescopic side members attached to two rigid cross members. Again, the adjustment in the length and the width of the support surfaces attached to the telescopic members of the cross members is accomplished by fitting various pins in a plurality of apertures in the device.
All of these devices do not permit a stable or precise adjustment of the guiding, positioning, and supporting of the equipment to be supported by these devices. Thus, there is a need for a device providing precise and reliable adjustment of its height, its length, and its position so as to precisely adjust the length, height, and position of the materials supported by the device.
SUMMARY OF THE INVENTION
It is an object of the present invention to provide a device that supports various materials and equipment and which permits the precise and reliable adjustment of the guiding, positioning, and supporting of materials supported by the device.
The invention which achieves this objective relates to a truck having supports held by two slides, each including a guiding and locking device on one sidemember, having two ends resting on two rotating crossmembers fitted with revolving rollers.
According to a preferred embodiment of the invention, the sidemember has a hollow shape and has a slot therein in which a guiding device slide having a U-shaped slides, stradling on the aforesaid sidemember, each slide having a vertical pipe on which leans a threaded tubular removable brace, supporting a screw-jack, comprising each support. Each slide is locked on the sidemember it straddles by a screw, whose nut is located in the side member.
BRIEF DESCRIPTION OF THE DRAWINGS
An embodiment of the present support-truck is illustrated in the attached drawings in which:
FIG. 1 is a front view of the truck, according to the invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a top view of the present invention;
FIG. 4 is a cross-sectional view of an adjustable fulcrum of the truck of the present invention;
FIGS. 5 and 6 show a side view of the present invention in which the present invention is used to move a vehicle.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
In FIGS. 1 to 4, the reference numeral (1) refers to the sidemembers of the truck, having a hollow metallic shape, whose top side has a slot (2), delimited by the turned down edges (1a) of the aforesaid side members.
This sidemember (1) is supported at its two ends, by two up-side-down U-shaped crossmembers 3, whose lateral sides are cut slantwise to allow for the revolving of wheels (4) assembled in revolving flange (5) in the usual way, fastened at each end of crossmembers (3).
Cross members 3 are adjustable with respect to the sidemember (1). To achieve this goal, a screw (6) crossing both sidemember 1 and crossmembers (3), functions as an axle, that may be tightened with an easy to handle nut, in order to lock crossmember (3) in the any desired position. Also provided is a stop (7), interdependant of the crossmember (3), which renders it impossible to move the crossmember (3) beyond an unsteady position.
Also provided are two U-s
REFERENCES:
patent: 1304680 (1919-05-01), Hart
patent: 1341621 (1920-05-01), Seas
patent: 1478307 (1923-12-01), Sykes et al.
patent: 2608313 (1952-08-01), Wilson
patent: 2637522 (1953-05-01), Wallace
patent: 3405781 (1968-10-01), Brown
patent: 3433447 (1969-03-01), Carroll
patent: 3504889 (1970-04-01), Wyrough
patent: 3690608 (1972-09-01), Poizner
patent: 4177978 (1979-12-01), Warsaw
patent: 4383681 (1983-05-01), Walters
patent: 4491305 (1985-01-01), Walters
Patent Abstract of Japan, vol. 7, No. 189 (n-237) 1334, Aug. 18, 1983 and JP,A5889443.
Schad Steven P.
Schmidt Frederick R.
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