Pipe clamp

• US 7,328,873 B2
• Filed: 11/12/2004
• Issued: 02/12/2008
• Est. Priority Date: 11/25/2003
• Status: Expired due to Fees

• Current Assignee: Nifco Incorporated
• Original Assignee: Nifco Incorporated
• Inventors: Suzuki, Keisuke, Tanno, Akihiko
• Primary Examiner(s): STERLING, AMY JO
• Application Number:
  US10/986,276
• Publication Number:
  US 20050127248A1
• Time in Patent Office: 1,187 Days
• Field of Search: 248/65, 248/68.1, 248/71, 248/73, 248/74.2
• US Class Current: 248/68.1
• CPC Class Codes: F16L 55/035 in the form of specially adapted hangers or supports

Abstract

A pipe clamp for attaching a pipe to a fixing member includes a connecting portion formed of a hard material, a pipe holding portion formed of a hard material, and a vibration-proof member formed of a soft material and disposed between the connecting portion and the pipe holding portion. The vibration-proof member is provided with an engaging portion for engaging the connecting portion and another engaging portion for engaging the pipe holding portion. The vibration-proof member is provided with a plurality of grooves or projections arranged along an axial direction of the pipe on at least one of surfaces facing the connecting portion and the pipe holding portion.

Claims

1. A pipe clamp for attaching a pipe to a fixing member, comprising:

a connecting portion to be attached to the fixing member and formed of a first material,

a pipe holding portion formed of a second material and attached to the connecting portion for holding the pipe, and

a vibration-proof member disposed between the connecting portion and the pipe holding portion and formed of a third material, said third material having a rigidity less than those of the first and second materials, said vibration-proof member including a first engaging portion for engaging the connecting portion and a second engaging portion for engaging the pipe holding portion,

wherein said vibration-proof member includes a first upper wall, a first groove in the first upper wall, a projection extending rearwardly from the first upper wall at an end of the first groove to engage a part of the pipe holding portion, and a first rib extending rearwardly from a lower side of the first upper wall to engage a lower end of the pipe holding portion.

2. A pipe clamp according to claim 1, wherein said vibration-proof member includes a retaining portion so that the pipe holding portion is inserted into the retaining portion along an axial direction of the pipe, and said connecting portion includes a housing portion so that the vibration-proof member is inserted into the housing portion along the axial direction.

3. A pipe clamp according to claim 2, wherein said vibration-proof member includes a plurality of grooves or projections extending along the axial direction on at least one of a surface facing the connecting portion and a surface facing the pipe holding portion.

8. A pipe clamp according to claim 1, wherein said connecting portion includes a second upper wall, and a craw to sandwich the part of the pipe holding portion together with the projection.

4. A pipe clamp for attaching a pipe to a fixing member, comprising:

a connecting portion to be attached to the fixing member and formed of a first material,

a pipe holding portion formed of a second material and attached to the connecting portion for holding the pipe, and

a vibration-proof member disposed between the connecting portion and the pipe holding portion and formed of a third material, said third material having a rigidity less than those of the first and second materials, said vibrationproof member including a first engaging portion for engaging the connecting portion and a second engaging portion for engaging the pipe holding portion,

wherein said vibration-proof member is formed of a first upper wall and two first side walls extending rearwardly from two side ends of the first upper wall, and includes at least one first groove in the first upper wall, a projection extending rearwardly from the first upper wall at an end of the at least one first groove, a first rib extending rearwardly from a lower side of the first upper wall, and second ribs formed at the first side walls to face each other at lower sides thereof.

5. A pipe clamp according to claim 4, wherein said pipe holding portion is located inside the vibration-proof member and includes a plurality of pipe holding parts, an upper wall located above the first rib, at least one second groove with a stop formed in the upper wall and disposed above the projection, and outer side walls disposed above the second ribs.

6. A pipe clamp according to claim 5, wherein said connecting portion is formed of a second upper wall and two second side walls extending rearwardly from two side ends of the second upper wall to retain the vibration-proof member therein, and includes at least one craw to sandwich the stop together with the projection, a third rib extending rearwardly from the second upper wall and located under the first rib, and fourth ribs formed at the two second side walls to face each other at lower sides thereof and located under the second ribs.

7. A pipe clamp according to claim 6, wherein said vibration-proof member includes inner grooves at the first side walls to receive lateral ends of the upper wall of pipe holding portion therein, and outer grooves formed at the first side walls to receive projections formed at two second side walls of the connecting portion.