APPARATUS ADAPTED TO BE COUPLED TO A TRACTION VEHICLE SERVING FOR THE MAINTENANCE OR CONSTRUCTION OF WATER-BOUND ROADS

• US 3,724,557 A
• Filed: 07/15/1970
• Issued: 04/03/1973
• Est. Priority Date: 07/22/1969
• Status: Expired due to Term

• Current Assignee: Hans Gisler, Marcel Boschung
• Original Assignee: Hans Gisler, Marcel Boschung
• Inventors: Boschung, Marcel, Gisler, Hans
• Primary Examiner(s): Pulfrey, Robert E.
• Assistant Examiner(s): Pellegrino, Stephen C.
• Application Number:
  US05/054,967
• Time in Patent Office: 993 Days
• Field of Search: 172/199,200,417,785,780,285,197,288,278
• US Class Current: 172/197
• CPC Class Codes: E02F 3/7604 Combinations of scraper blades with soil loosening tools working independently of scraper blades soil loosening attachments fixed on blades E02F3/8152, E02F3/8155
• CPC Class Codes: E02F 3/7663 Graders with the scraper blade mounted under a frame supported by wheels, or the like
• CPC Class Codes: E02F 3/961 with several digging elements or tools mounted on one machine for backhoes E02F3/964 takes precedence

Abstract

An apparatus capable of being coupled to a traction vehicle and serving for the construction or maintenance of water-bound roads, which is of the type comprising a main support bearing upon an undercarriage. This equipment also incorporates a pavement breaker beam and a levelling plate, both of which are pivotably coupled with the main support independently of one another for movement about at least one axis extending transverse to the lengthwise axis of the apparatus. According to the invention the pavement breaker beam and the levelling plate can each be arrested independently of one another at a respective predetermined spacing with respect to the main support, and further, wherein the rear end of the main support is coupled by means of a guide mechanism with the undercarriage for the purpose of regulating the height of this end above the ground.

Claims

1. An apparatus capable of being coupled to a traction vehicle and used for the construction or maintenance of water-bound roads or the like, comprising an undercarriage, a main support unit bearing upon said undercarriage, a road surface-breaker beam member and a levelling member, means pivotably connecting both said breaker beam member and said levelling member with said main support unit independently of one another for movement about at least one axis extending transverse with respect to the lengthwise axis of the apparatus, means selectively positioning said breaker-beam member and said levelling member independentLy from another at a respective predetermined spacing with respect to said main support unit, guide means displaceably connecting the rear end of said main support unit with said undercarriage, means connected with said guide means in order to control the height of said rear end of said main support unit above the ground, said undercarriage being provided with a pair of travelling wheel members and means including steering means controlling both wheel members of said undercarriage for the purpose of synchronously controlling said wheel members as a function of the angle between the lengthwise axis of the apparatus and that of the traction vehicle, and wherein said steering means comprises a double-arm lever member mounted at said main support unit and capable of being connected with said traction vehicle, and further incorporates two single arm lever members each coupled with a respective vertically arranged pivot means provided for each travelling wheel member of said undercarriage, a respective end of the double-arm lever member being coupled via an associated traction cable with a free end of an associated one of said single lever arm member.

2. An apparatus capable of being coupled to a traction vehicle and used for the construction or maintenance of water-bound roads or the like, comprising an undercarriage, travelling wheel means provided for said undercarriage, a main support unit bearing upon said undercarriage and its wheel means, a road surface-breaker beam member and a levelling member, means pivotably connecting both said breaker beam member and said levelling member with said main support unit independently of one another for movement about at least one axis extending transverse with respect to the lengthwise axis of the apparatus, means selectively positioning said breaker-beam member and said levelling member independently from another at a respective predetermined spacing with respect to said main support unit, and guide means displaceably connecting the rear end of said main support unit with said undercarriage, means connected with said guide means in order to control the height of said rear end of said main support unit above the ground, and wherein said means for positioning said levelling member incorporates a vertically extending guide block deposed at said rear end of said main support unit, pin members provided at the rear face of said levelling member extending into said guide block, and a blocking belt member insertable into a transverse bore of said guide block serving as a stop means for limiting the upward and/or downward movement of the levelling member.

3. The apparatus as defined in claim 2, further including means pivotably mounting said levelling member for movement about a substantially vertical axis, and mechanism operatively connected with said levelling member and incorporating a locking plate and an insertable pin member engageable with said locking plate for arresting said levelling member in its assumed pivotable position.

4. The apparatus as defined in claim 3, wherein said locking plate is carried by said levelling member.