US 7,442,001 B2 · Boom assembly

Abstract

A boom assembly is bent at a longitudinal center portion thereof to present an upwardly convex shape. The assembly includes a front boom body and a rear boom body. The front boom body and the rear main body each includes a main body consisting essentially of a pair of right and left lateral plates and a top plate interconnecting upper edges of the respective lateral plates. The main body is formed with an upper face and a lower edge thereof being bent in a longitudinal direction thereof into an arc face having a predetermined radius of curvature. The front or rear main body further includes a bottom plate disposed downwardly of the top plate and between the right and left lateral plates. Each main body is formed by bending a plate member into a reverse U-shaped cross section and each bottom plate is comprised of a plate member provided separately from the plate member forming the main body.

Drawings

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Drawings

Claims8

Dependent claims

A boom assembly which is bent at a longitudinal center portion thereof to present an upwardly convex shape, the assembly comprising:

a front boom body including:
a main body consisting essentially of a pair of right and left lateral plates and a top plate interconnecting upper edges of the respective lateral plates, the main body being formed with an upper face and a lower edge thereof being bent in a longitudinal direction thereof into an arc face having a predetermined radius of curvature, and
a bottom plate disposed downwardly of the top plate and between the right and left lateral plates;
a rear boom body including:
a main body consisting essentially of a pair of right and left lateral plates and a top plate interconnecting upper edges of the respective lateral plates, the main body being formed with an upper face and a lower edge thereof being bent in a longitudinal direction thereof into an arc face having a predetermined radius of curvature, and
a bottom plate disposed downwardly of the top plate and between the right and left lateral plates;
wherein each main body is formed by bending a plate member into a reverse U-shaped cross section;
each bottom plate is comprised of a plate member provided separately from said plate member forming the main body;
and
wherein a vertical distance between each bottom plate and a lower edge of each of its lateral plates form a pipe accommodating space at the longitudinal center portion of the boom assembly, downwardly of the bottom plate and between each of the left and right lateral plates, wherein the vertical distance is smallest at a longitudinal intermediate portion between each longitudinal end of the boom assembly and said longitudinal center portion, and the vertical distance progressively increases from each longitudinal intermediate portion toward the longitudinal center portion to form the pipe accommodating at said longitudinal center portion.

7 more elements

A boom apparatus comprising:

a pair of right and left boom assemblies, each said boom assembly including a front boom body and a rear boom body welded to the front boom body to present an upwardly convex shape, each of the boom bodies including a main body comprising a pair of right and left lateral plates and a top plate interconnecting upper edges of the respective lateral plates, the main body being formed with an upper face and a lower edge thereof being bent in a longitudinal direction thereof into an arc face having a predetermined radius of curvature, and a bottom plate disposed downwardly of the top plate and between the right and left lateral plates, each said main body being formed by bending a plate member into a reverse U-shaped cross section, each bottom plate being comprised of a plate member provided separately from said plate member forming the main body;
and
a connecting member for interconnecting the front boom body of the right boom assembly and the front boom body of the left boom assembly,
wherein
each said boom assembly has a vertical distance between the bottom plate and a lower edge of each lateral plate progressively increasing from the portion below the connecting member toward the longitudinal center portion;
and
a pipe accommodating space is formed in each said boom assembly downwardly of the bottom plate and between the right and left lateral plates, said pipe accommodating space extending from a portion below the connecting member through to a longitudinal center portion of each said boom assembly.

4 more elements

Dependencies are inferred from the claim text.

Description3,547 words

Summary1,288 words

#1. Field of the Invention

#The present invention relates to a boom assembly employed in a loading/unloading vehicle for an agricultural, civil engineering work, etc., such as a tractor-mounted loader comprised of a tractor equipped with a front loader and/or a backhoe, a self-propelled loader (wheeled loader, a self-propelled backhoe, a power shovel, etc.).

#2. Description of the Related Art

Brief description of the drawings9 figures

#FIG. 1 is an overall side view showing a tractor-mounted loader having a boom assembly according to a first embodiment of the invention,

#FIG. 2 is an exploded side view of the boom assembly,

#FIG. 3 is a side view in section showing principal portions of a front loader,

Detailed description2,128 words

#Next, preferred embodiments of the invention will be described with reference to the accompanying drawings.

#Referring to FIG. 1, a tractor-mounted loader 1, an example of a loading/unloading vehicle, includes a tractor 2 and a front loader 3 mounted to a front portion of the tractor 2.

#The tractor 2 includes pairs of right and left front and rear wheels 4, 5 and a hood 6 is provided at the front portion thereof for covering en engine, a radiator, etc. The hood 6 has a curved shape at its upper surface, etc.

Facts

Application

11/225,850Filed 13 Sep 2005

Priority

JP 2005-0007545 Jan 2005

Published

US 2006/0182597 A117 Aug 2006

Granted

28 Oct 2008

Term ended

26 Oct 2025

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 43 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification4 codes

E02F 3/34
With digging tools mounted on a dipper- or bucket-arm , i.e. there is either one arm or a pair of arms, e.g. dippers, buckets: with bucket-arms ,…
Y10T 29/49448
Method of mechanical manufacture: agricultural device making
E02F
Dredging
Y10T
Technical subjects covered by former us classification

Timeline

5 Jan 2005Priority claimedJP 2005-000754
13 Sep 2005Application filedUS 11/225,850
29 Nov 2005Assigned to Kubota Corporationassignment of assignor's interest
17 Aug 2006PublishedUS 2006/0182597 A1
28 Oct 2008GrantedUS 7,442,001 B2
26 Oct 2025Term endedEstimated, includes 43 days of adjustment

Boom assembly

Life of this patent

Boom assembly

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims8

Description3,547 words

Drawings

Classification4 codes

Life of this patent

Description3,547 words