Transfer bridge for docks
OwnerKurt Alteninventor
Life of this patent
Estimating the term…
Abstract
A transfer bridge that is pivotably mounted on a dock. The free end of the bridge plate is provided with an extension that can be retracted and extended. One or more tongues are displaceably supported by the extension. A pressure member provides a frictional force that holds the tongues against the extension and that must be overcome when the tongues are pushed in and when the tongues encounter a stop member of the bridge plate.
Claims6
A transfer bridge for a dock, said bridge including a bridge plate that at its back, dock end is pivotable about a horizontal transverse axis, with the free front end of said bridge plate being provided with an extension that can be retracted and extended, and that can rest upon a platform that is to be loaded or unloaded;
- said bridge further comprises:
- tongue means displaceably supported by said extension;
- a fixed stop member supported by said bridge plate for delimiting displacement of said tongue means in a direction toward said back end of said bridge plate, said fixed stop member being disposed ahead of an end position of said extension by a distance that corresponds to a length of maximum push-in stroke of said tongue means;
- and
- means including a spring-loaded pressure member for providing frictional contact between said tongue means and said extension;
- this frictional contact holds said tongue means against said extension for either direction of movement of said tongue means and must be overcome when said tongue means is pushed in when a vehicle approaches that is to be loaded or unloaded and when said tongue means abuts against and encounters said fixed stop member.
A transfer bridge for a dock, said bridge including a bridge plate that at its back, dock end is pivotable about a horizontal transverse axis, with the free front end of said bridge plate being provided with an extension that can be retracted and extended, and that can rest upon a platform that is to be loaded or unloaded;
- said bridge further comprises:
- tongue means displaceably supported by said extension;
- a stop member supported by said bridge plate for delimiting displacement of said tongue means in a direction toward said back end of said bridge plate;
- and
- means for providing frictional contact between said tongue means and said extension;
- this frictional contact holds said tongue means against said extension and must be overcome when said tongue means is pushed in and when said tongue means encounters said stop member,
- said means for providing frictional contact being a slide block that is spring-loaded and acts upon said tongue means from a predetermined direction.
A transfer bridge for a dock, said bridge including a bridge plate that at its back, dock end is pivotable about a horizontal transverse axis, with the free front end of said bridge plate being provided with an extension that can be retracted and extended, and that can rest upon a platform that is to be loaded or unloaded;
- said bridge further comprises:
- tongue means displaceably supported by said extension;
- a stop member supported by said bridge plate for delimiting displacement of said tongue means in a direction toward said back end of said bridge plate;
- and
- means for providing frictional contact between said tongue means and said extension;
- this frictional contact holds said tongue means against said extension and must be overcome when said tongue means is pushed in and when said tongue means encounters said stop member,
- said tongue means having a front end that is flush with said extension when the latter is retracted, and a back end that rests against said stop member of said bridge plate when said extension is retracted.
Dependencies are inferred from the claim text.