PORTABLE DOCK LEVELLERS

• US 3,639,935 A
• Filed: 06/15/1970
• Issued: 02/08/1972
• Est. Priority Date: 06/15/1970
• Status: Expired due to Term

• Current Assignee: Karl Kumpolt
• Original Assignee: Karl Kumpolt
• Inventors: Kumpolt, Karl
• Primary Examiner(s): Nackenoff, Jacob L.
• Application Number:
  US05/046,383
• Time in Patent Office: 603 Days
• Field of Search: 14/71,72
• US Class Current: 14/69.5
• CPC Class Codes: B65G 69/30 Non-permanently installed loading ramps, e.g. transportable

Abstract

A dock platform having a resiliently pivot-liftable wing on one side thereof which is adapted to bridge a space between a dock and the floor of an adjacent carrier, when lowered, for transport of material thereover, said wing being frictionally locked against said lifting until released by a foot pedal; ground wheels rockably mounted on one side and a castered dolly hinged to the opposite side of the platform, and said parts interconnected, for raising the platform thereon to an elevated and locked position by a lever, for portability of the platform and wing; and a second foot pedal for the release of the platform from said elevated and locked position onto the dock.

Claims

1. A portable dock leveller, comprising :

a ramp platform having a wing hinged to and projecting from one side of said platform;

said wing adapted to normally extend over an opening between a dock on which the platform is supported and the floor of an adjacent carrier, for passage therebetween;

resilient means for hinge lifting the wing on the platform;

releasable frictional means for preventing the wing from such lifting;

wheels mounted below the platform;

means for lifting the platform and wing on said wheels to a locked position for guided transport thereon; and

means for releasing the platform from said locked position.

2. A portable dock leveller as defined in claim 1, wherein a lever is carried by said wing at the hinge thereof and a spring acts on said lever for said resilient hinge lifting of the wing;

and a foot control mechanism is provided for releasing said frictional means to permit such wing lifting.

3. A portable dock leveller as defined in claim 1, wherein said wheels are arm mounted under one side of the platform and a caster-supported dolly is hinged to the opposite side thereof;

and said wheel arm mounting is connected to the dolly for simultaneous lift of both sides of the platform thereon, and to said lifted elevated position; and

a foot operated mechanism is provided for said platform release means.

4. A portable dock leveller as defined in claim 1, wherein said wing is downwardly and pressure movable against said releasable frictional means.

5. A portable dock leveller, comprising:

a ramp platform having a wing hinged to and projecting from a high side thereof;

said wing adapted to normally extend over a spacing between a dock on which the platform is supported and the floor of an adjacent carrier, for passage of goods thereover;

a tripedal having one foot thereof carried by the hinge of the wing;

a second foot of said tripedal attached to the side of the wing and a third foot thereof connected by a spring with the platform, for resilient hinge lifting of said wing;

frictional means for preventing the wing from said lifting and permitting down pressed movement thereof;

manually operable means for releasing said frictional means;

wheels mounted on swingable arms carried by a second side of said platform;

a caster-supported dolly hinged to the platform on the side remote from said wheels, and said dolly link-connected with said swingable arms;

a lever carried by the platform and operable against the dolly for lift of the platform on the dolly and wheels to a locked elevated position; and

a manually operable mechanism for the release of said elevated platform from said locked position.