Undercarriage for a telescopic frame
AssigneeThor Global Enterprises Ltd.
InventorThorkil J. Johannsen
Life of this patent
Estimating the term…
Abstract
A telescopic undercarriage for raising and lowering a frame. The undercarriage includes a base section having a pair of parallel base legs extending from a first end to a second end of the base section, the base section including a first plurality of braces extending between respective upper surfaces of the base legs and a second plurality of braces extending between respective lower surfaces of the base legs, the base legs, first plurality of braces and second plurality of braces collectively providing an elongate central base section passage. The undercarriage also includes an extendable section slidably disposed within the base section passage and having opposed legs, a drive system for extending and retracting the extendable section relative to the base section.
Claims19
A telescopic undercarriage for raising and lowering a frame, comprising:
- a base section having a pair of parallel base legs extending from a first end to a second end of the base section, each base leg defining an elongate open-sided channel facing the other base leg, the base section including a first plurality of braces extending between respective upper surfaces of the base legs and a second plurality of braces extending between respective lower surfaces of the base legs, wherein the base legs, first plurality of braces and second plurality of braces collectively define an elongate base section passage;
- and
- an extendable section telescopically mounted within the base section passage for movement from the second end of the base section between retracted and extended positions and having opposed legs connected by a third plurality of braces extending therebetween, each of the opposed legs being slidably received within a corresponding one of the base leg channels.
An undercarriage raising and lowering a telescopic frame that has a first end pivotally connected to a support frame, the undercarriage comprising:
- a base section having a pair of parallel base legs extending from a first end to a second end of the base section, each base leg defining an elongate open-sided channel facing the other base leg, the base section including a first plurality of braces extending between respective upper surfaces of the base legs and a second plurality of braces extending between respective lower surfaces of the base legs, wherein the base legs, first plurality of braces and second plurality of braces collectively define an elongate base section passage, the first end of the base section being pivotally mounted to the support frame at a location spaced apart from the first end of the telescopic frame;
- and
- an extendable section telescopically mounted within the base section passage for movement from the second end of the base section between retracted and extended positions and having opposed legs connected by a third plurality of braces extending therebetween, each of the opposed legs being slidably received within a corresponding one of the base leg channels, the exetendable section having an extending end connected to the telescopic frame.
An undercarriage for a telescopic frame, the undercarriage being connected to the telescopic frame for arising and lowering an end thereof, the frame comprising:
- a. a base section having opposed inward-opening u-shaped legs having first ends pivotally connected to the horizontal frame, the u-shaped legs connected by a plurality of spaced apart braces extending from a top or bottom surface of a u-shaped leg to a corresponding top or bottom surface of the opposed u-shaped leg forming a passage;
- b. an extendable section disposed within the passage having opposed tubular legs with first ends pivotally connected to the telescopic frame and each tubular leg slidably received within a corresponding u-shaped leg wherein the opposed tubular legs are connected by a plurality of spaced apart cross-braces;
- and
- c. a hydraulic drive system for extending and retracting the extendable section relative to the drive section.
Dependencies are inferred from the claim text.