Motor mount for reducing vibration and noise and method of using thereof

• US 5,566,919 A
• Filed: 10/13/1994
• Issued: 10/22/1996
• Est. Priority Date: 10/13/1994
• Status: Expired due to Term

• Current Assignee: Norfolk Scientific Incorporated
• Original Assignee: Norfolk Scientific Incorporated
• Inventors: Shephard, Larry E.
• Primary Examiner(s): Chin-Shue, Alvin C.
• Assistant Examiner(s): HAMILLA, BRIAN
• Application Number:
  US08/322,597
• Time in Patent Office: 740 Days
• Field of Search: 248/604, 248/603, 248/605, 248/632, 248/634, 248/638, 248/154, 248/519, 248/523, 267/158, 267/160, 267/161
• US Class Current: 248/604
• CPC Class Codes: B04B 9/12 Suspending rotary bowls ; Bearings; Packings for bearings
• CPC Class Codes: F16F 15/073 using only leaf springs
• CPC Class Codes: F16M 7/00 Details of attaching or adjusting engine beds, frames, or supporting-legs on foundation or base; Attaching non-moving engine parts, e.g. cylinder blocks elastic or equivalent mounting for absorbing vibrations F16F, especially F16F15/04

Abstract

A motor mount for reducing vibration and noise associated with motor load imbalances. The mount includes a one-piece elastomeric support having a motor attachment portion from which a plurality of supporting legs extend. Prior to assembly, the amount has a planar configuration. In assembly, the motor attachment portion is positioned around and secured to the motor by a clamp. Brackets are provided to secure the legs to a base. The mount provides the motor with pivotal freedom of motion but prevents substantial vertical displacement of the motor. The motor mount is well suited for use in centrifuges and other apparatus in which load imbalances cause vibration. In one embodiment, the mount includes three legs so that, in assembly, the mount is tripod-like.

Claims

1. A mount for mounting a motor to a base, said mount comprising:

a one-piece elastomeric support having a motor attachment portion and a plurality of legs, each one of said legs extending from said motor attachment portion to terminate at a corresponding foot, wherein prior to being attached to said motor, said support is planar, and during use, said motor attachment portion is adapted for being disposed around said motor and each said foot is adapted for attachment to said base.

2. The mount recited in claim 1 further comprising a clamp disposed concentrically around said motor attachment portion of said support to compress said motor attachment portion against said motor.

3. The mount recited in claim 1 wherein each said foot has a width greater than the width of the corresponding leg and wherein said mount further comprises a plurality of brackets, each disposed across a corresponding one of said legs adjacent to the corresponding foot for fastening to said base.

4. The mount recited in claim 1 wherein said support comprises three legs.

5. A method of supporting a motor on a base comprising the steps of:

providing a one-piece elastomeric support having a motor attachment portion and a plurality of legs, wherein prior to being attached to said motor, said support is planar, each of said legs extending from said motor attachment portion to terminate at a corresponding foot, said support providing greater vertical stiffness than pivotal stiffness;

attaching said motor attachment portion to said motor; and

attaching each of said plurality of legs to said base.

6. The method recited in claim 5 wherein said step of providing said support comprises the step of providing said support with three legs.

7. The method recited in claim 5 wherein said step of attaching said support to said motor comprises the steps of positioning said motor attachment portion around said motor and providing a clamp around said motor attachment portion to compress said motor attachment portion against said motor.

8. The method recited in claim 5 wherein said step of providing said support comprises the step of providing said feet with a greater width than said corresponding leg and wherein the step of attaching each of said plurality of legs to said base comprises the step of positioning a bracket across each of said legs adjacent to said corresponding foot and fastening said bracket to said base.

9. The method recited in claim 5 further comprising the step of attaching a centrifuge housing to said base.