Engine generator

• US 7,309,927 B2
• Filed: 12/22/2005
• Issued: 12/18/2007
• Est. Priority Date: 12/22/2004
• Status: Expired due to Fees

• Current Assignee: Yamaha Motor Power Products Kabushiki Kaisha (Yamaha Corporation)
• Original Assignee: Yamaha Hatsudoki Kabushiki Kaisha (Yamaha Corporation)
• Inventors: Sugiyama, Takahide, Mazuka, Naoto
• Primary Examiner(s): GONZALEZ, JULIO CESAR
• Application Number:
  US11/315,829
• Publication Number:
  US 20060163875A1
• Time in Patent Office: 726 Days
• Field of Search: 290/1.A, 290/2, 290/1.B, 290/22, 123/2
• US Class Current: 290/1.00A
• CPC Class Codes: F02B 63/04 for electric generators
• CPC Class Codes: F02B 63/048 Portable engine-generator combinations

Abstract

A framework of an engine generator can be made up of a front frame and a rear frame which can be made from aluminum die castings. Securing frames can be configured to removeably connect the opposing bottom edges of the front frame and the rear frame, on their both sides through bolts and nuts. Handles can be configured to removeably connect the opposing top edges of the front frame and the rear frame, on their both sides through bolts and nuts. The front frame and the rear frame can be formed integral with rib portions for mounting panels respectively, and handle mounting portions and respectively, for mounting the handles.

Claims

1. An engine generator comprising an enclosure including a three dimensional framework and acoustical panels attached thereto, the framework comprising a front frame formed in one piece and forming a front portion of the framework, a rear frame formed in one piece and forming a rear portion of the framework, at least one connecting frame for removeably connecting the front frame and the rear frame through a first securing member, and at least one handle configured to allow a user to carry the engine generator, removeably connecting handle mounting portions disposed on the front frame and the rear frame, through a second securing member, wherein the handle mounting portions are disposed on top left and right sides of the front frame and the rear frame, and wherein a pair of two connecting frames connect opposing bottom portions of the front frame and the rear frame, on their left and right sides, and a pair of two handles connect the opposing handle mounting portions of the front frame and the rear frame;

and

wherein the front frame and the rear frame comprise aluminum die castings, and each frame being formed integral with both a panel mounting rib portion for mounting the acoustical panel and the handle mounting portion;

wherein the panel mounting rib portion and the handle mounting portion are configured so that a die for forming the front frame and the rear frame can be moved in one direction into operative mating with a corresponding mold.

2. The engine generator according to claim 1, wherein the front frame and the rear frame comprise aluminum die castings, and each frame being formed integral with both a panel mounting rib portion for mounting the acoustical panel, and the handle mounting portion.

3. The engine generator according to claim 2 additionally comprising a rotation preventing portion configured to preventing rotation of the handle about its axis, provided between the handle mounting portion of at least one of the front frame and the rear frame, and the handle.

4. The engine generator according to claim 1, wherein the front frame and the rear frame are each formed integral with boss portions for securing the acoustical panels, the acoustical panels being secured to the boss portions through third securing members.

5. The engine generator according to claim 1 additionally comprising a rotation preventing portion configured to preventing rotation of the handle about its axis, provided between the handle mounting portion of at least one of the front frame and the rear frame, and the handle.

6. An engine generator comprising an enclosure including a three dimensional framework and acoustical panels attached thereto, the framework comprising a front frame formed in one piece and forming a front portion of the framework, a rear frame formed in one piece and forming a rear portion of the framework, at least one connecting frame for removeably connecting the front frame and the rear frame through a first securing member, at least one handle configured to allow a user to carry the engine generator, removeably connecting handle mounting portions disposed on the front frame and the rear frame, through a second securing member, and a rotation preventing portion configured to preventing rotation of the handle about its axis, provided between the handle mounting portion of at least one of the front frame and the rear frame, and the handle, wherein the handle is formed in a tubular shape, and the rotation preventing portion comprises an engaging portion formed at the handle mounting portion, and a receiving portion formed in the handle to receive the engaging portion.