Materials handling vehicle with improved visibility

Patent metadata

Field	Value
Publication number	US-9550660-B2
Application number	US-201414169638-A
Country	US
Kind code	B2
Filing date	Jan 31, 2014
Priority date	Nov 10, 2005
Publication date	Jan 24, 2017
Grant date	Jan 24, 2017

Abstract

A materials handling vehicle is provided comprising a power unit, a mast assembly and a fluid supply system. The mast assembly is coupled to the power unit. The mast assembly comprises a weldment, a movable element and a ram/cylinder assembly coupled to the movable element to effect movement of the element. The fluid supply system includes manifold apparatus and at least one fluid line coupled to the manifold apparatus and the ram/cylinder assembly. The manifold apparatus provides pressurized hydraulic fluid to the ram/cylinder assembly via the fluid line to raise the movable element. The manifold apparatus is mounted to the mast assembly.

First claim

What is claimed is:

1. A materials handling vehicle comprising:
a power unit;
a mast assembly coupled to said power unit, said mast assembly comprising a first weldment not capable of moving vertically relative to said power unit, a movable element and a ram/cylinder assembly coupled to said movable element to effect movement of said movable element; and
a fluid supply system including a manifold apparatus and at least one fluid line coupled to and extending between said manifold apparatus and said ram/cylinder assembly;
said manifold apparatus is directly mounted to said first weldment and includes valve structure to provide pressurized fluid to said ram/cylinder assembly via said fluid line to raise said movable element.

2. A materials handling vehicle as set out in claim 1 , wherein said mast assembly further comprises a second weldment which moves relative to said first weldment, a third weldment which moves relative to said second weldment, and first and second lift ram/cylinder assemblies for effecting movement of said second and third weldments, and said fluid supply system further comprises at least one fluid line coupled to each of said first and second lift ram/cylinder assemblies and said manifold apparatus for defining pathways for pressurized fluid to move from said manifold apparatus to said first and second lift assemblies.

3. A materials handling vehicle as set out in claim 2 , wherein said movable element comprises a fork carriage assembly.

4. A materials handling vehicle as set out in claim 1 , wherein said movable element comprises a second weldment movable relative to said first weldment.

5. A materials handling vehicle comprising:
a power unit;
a mast assembly coupled to said power unit, said mast assembly comprising a first weldment not capable of moving vertically relative to said power unit;
at least one of an auxiliary device associated with said mast assembly or a tilt ram cylinder structure coupled to said mast assembly;
a fluid supply system including a manifold apparatus and at least one fluid line coupled to and extending between said manifold apparatus and said at least one of said auxiliary device or said tilt ram cylinder structure;
said manifold apparatus is directly mounted to said first weldment and includes valve structure for controlling the rate of fluid flow to said at least one of said auxiliary device or said tilt ram cylinder structure.

6. A materials handling vehicle as set forth in claim 5 , wherein both the auxiliary device and the tilt ram cylinder structure are provided and said valve structure controls the rate of fluid flow provided to each of said auxiliary device and said tilt ram cylinder structure.

7. A materials handling vehicle as set forth in claim 5 , wherein said tilt ram cylinder structure is coupled between said power unit and said mast assembly.

Assignees

• Jones William C
• Crown Equip Corp

Inventors

• Jones William C

Classifications

• B66F9/07572

  Propulsion arrangements · CPC title

• Y10S414/127

  Handling vehicles with overhead guard for operator · CPC title

• B66F9/205

  Arrangements for transmitting pneumatic, hydraulic or electric power to movable parts or devices (for cranes B66C13/12) · CPC title

• B66F9/08

  Masts; Guides; Chains · CPC title

• B66F9/07568

  Steering arrangements · CPC title