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US 4,050,665 AGranted
Vibration damping apparatus
AssigneeNewport Research Corporation
InventorsJohn W. Matthews, Harry Dennis Sigel, Peter Hauk
Life of this patent
Estimating the term…
Abstract
Apparatus for securing vibration sensitive equipment relative to a support comprising a rigid structure having an outer surface for attachment of the vibration sensitive equipment, a hollow interior and a wall portion between the outer surface and the hollow interior. This structure is rigidly attachable to the support. The hollow interior contains at least two dynamic damping systems having different resonance characteristics. Each dynamic damping system comprises a damping mass elastically mounted in spaced relationship to the wall portion.
Claims31
Apparatus for securing vibration sensitive equipment relative to a support, comprising in combination:
- a rigid structure comprising a rigid mounting rod having an outer surface for attachment of said vibration sensitive equipment, a hollow interior and a wall portion between said outer surface and said hollow interior;
- means for rigidly attaching said mounting rod to said support;
- and
- at least two dynamic damping systems in said hollow interior having different resonance characteristics;
- one of said dynamic damping systems comprising a first damping mass smaller than said hollow interior and first elastic mounting means for mounting said first damping mass in said hollow interior in spaced relationship to said wall portion;
- and
- the other of said dynamic damping systems comprising a second damping mass smaller than said hollow interior and second elastic mounting means for mounting said second damping mass in said hollow interior in spaced relationship to said wall portion.
4 more elements
Apparatus for securing vibration sensitive equipment relative to a support, comprising in combination:
- a rigid structure having an outer surface for attachment of said vibration sensitive equipment, a hollow interior and a wall portion between said outer surface and said hollow interior;
- means attached to said structure for rigidly attaching said structure to said support;
- and
- at least two dynamic damping systems in said hollow interior having different resonance characteristics;
- one of said dynamic damping systems comprising a first damping mass smaller than said hollow interior and first elastic mounting means for mounting said first damping mass in said hollow interior in spaced relationship to said wall portion;
- and
- the other of said dynamic damping systems comprising a second damping mass smaller than said hollow interior and second elastic mounting means for mounting said second damping mass in said hollow interior in spaced relationship to said wall portion at least said first elastic mounting means being bonded to said wall portion.
4 more elements
Apparatus for securing vibration sensitive equipment relative to a support, comprising in combination:
- a rigid structure having an outer surface for attachment of said vibration sensitive equipment, a hollow interior and a wall portion between said outer surface and said hollow interior;
- means attached to said structure for rigidly attaching said structure to said support;
- and
- at least two dynamic damping systems in said hollow interior having different resonance characteristics;
- one of said dynamic damping systems comprising a first damping mass smaller than said hollow interior and first elastic mounting means for mounting said first damping mass in said hollow interior in spaced relationship to said wall portion, said first elastic mounting means being bonded to said wall portion;
- and
- the other of said dynamic damping systems comprising a second damping mass smaller than said hollow interior and second elastic mounting means for mounting said second damping mass in said hollow interior in spaced relationship to said wall portion, said second elastic mounting means being movable relative to said wall portion.
4 more elements
Apparatus for securing vibration sensitive equipment relative to a support, comprising in combination:
- a rigid structure having an outer surface for attachment of said vibration sensitive equipment, a hollow interior and a wall portion between said outer surface and said hollow interior;
- means attached to said structure for rigidly attaching said structure to said support;
- and
- at least two dynamic damping systems in said hollow interior having different resonance characteristics;
- one of said dynamic damping systems comprising a first damping mass smaller than said hollow interior and first elastic mounting means for mounting said first damping mass in said hollow interior in spaced relationship to said wall portion, said first elastic mounting means including a first elastic member encompassing at least a portion of said first damping mass and extending from said first damping mass portion to said wall portion;
- and
- the other of said dynamic damping systems comprising a second damping mass smaller than said hollow interior and second elastic mounting means for mounting said second damping mass in said hollow interior in spaced relationship to said wall portion, said second elastic mounting means including a second elastic member encompassing at least a portion of said second damping mass and extending from said second damping mass portion to said wall portion.
4 more elements
Apparatus for securing vibration sensitive equipment relative to a support, comprising in combination:
- a rigid structure having an outer surface for attachment of said vibration sensitive equipment, a hollow interior and a wall portion between said outer surface and said hollow interior;
- means attached to said structure for rigidly attaching said structure to said support;
- and
- at least two dynamic damping systems in said hollow interior having different resonance characteristics;
- one of said dynamic damping systems comprising a first damping mass smaller than said hollow interior and first elastic mounting means for mounting said first damping mass in said hollow interior in spaced relationship to said wall portion;
- the other of said dynamic damping systems comprising a second damping mass smaller than said hollow interior and second elastic mounting means for mounting said second damping mass in said hollow interior in spaced relationship to said wall portion;
- said first damping mass having a first body, a first mounting member projecting from one side of said first body and a second mounting member projecting from an opposite side of said first body;
- said second damping mass having a second body, a third mounting member projecting from one side of said second body and a fourth mounting member projecting from an opposite side of said second body;
- said first elastic mounting means including a first elastic member encompassing said first mounting member and extending from said first mounting member to said wall portion;
- said second elastic mounting means including a second elastic member encompassing said fourth mounting member and extending from said fourth mounting member to said wall portion;
- and
- said first and second elastic mounting means including at least one third elastic member encompassing said second and third mounting members and extending to said wall portion.
9 more elements
Apparatus as claimed in clam 22, wherein:
- said first and fourth mounting members have different dimensions;
- and
- said first and second elastic members have different dimensions accommodating, respectively, the different dimensions of said first and fourth mounting members.
Apparatus for securing vibration sensitive equipment relative to a support, comprising in combination:
- a rigid structure having an outer surface for attachment of said vibration sensitive equipment, a hollow interior and a wall portion between said outer surface and said hollow interior;
- means attached to said structure for rigidly attaching said structure to said support;
- and
- at least two dynamic damping systems in said hollow interior having different resonance characteristics;
- one of said dynamic damping systems comprising a first damping mass smaller than said hollow interior and first elastic mounting means for mounting said first damping mass in said hollow interior in spaced relationship to said wall portion;
- and
- the other of said dynamic damping systems comprising a second damping mass smaller than said hollow interior and second elastic mounting means integral with said first elastic mounting means for mounting said second damping mass in said hollow interior in spaced relationship to said wall portion.
4 more elements
Apparatus for securing vibration sensitive equipment relative to a support, comprising in combination:
- a rigid structure having an outer surface for attachment of said vibration sensitive equipment, a hollow interior and a wall portion between said outer surface and said hollow interior;
- means attached to said structure for rigidly attaching said structure to said support;
- and
- a plurality of viscoelastically damped dynamic absorbers having different resonance characteristics;
- each of said dynamic absorbers comprising an individual damping mass and individual mounting means for mounting the corresponding damping mass in said hollow interior in spaced relationship to said wall portion;
- and
- each of said mounting means for each of said mounting masses including a viscoelastic damper member encompassing at least a portion of the corresponding damping mass and extending from that damping mass portion to said wall portion of the rigid structure.
4 more elements
Apparatus for securing vibration sensitive equipment relative to a support, comprising in combination:
- a rigid structure having an outer surface for attachment of said vibration sensitive equipment, a hollow interior and a wall portion between said outer surface and said hollow interior;
- means attached to said structure for rigidly attaching said structure to said support;
- and
- at least two dynamic damping systems in said hollow interior having different resonance characteristics;
- one of said dynamic damping systems comprising a first damping mass smaller than said hollow interior and first elastic mounting means for mounting said first damping mass in said hollow interior in spaced relationship to said wall portion, said first elastic mounting means including a first viscoelastic damper member encompassing a first end portion of said first damping mass and extending from said first end portion to said wall portion of the rigid structure, and a second viscoelastic damper member encompassing an opposite second end portion of said first damping mass and extending from said second end portion to said wall portion of the rigid structure;
- and
- the other of said dynamic damping systems comprising a second damping mass smaller than said hollow interior and second elastic mounting means for mounting said second damping mass in said hollow interior in spaced relationship to said wall portion, said second elastic mounting means including a third viscoelastic damper member encompassing a first end portion of said second damping mass and extending from said first end portion of said second damping mass to said wall portion of the rigid structure, and a fourth viscoelastic damper member encompassing an opposite second end portion of said second damping mass and extending from said second end portion of said second damping mass to said wall portion of the rigid structure.
4 more elements
Apparatus for securing vibration sensitive equipment relative to a support, comprising in combination:
- a rigid structure having an outer surface for attachment of said vibration sensitive equipment, a hollow interior and a wall portion between said outer surface and said hollow interior;
- means attached to said structure for rigidly attaching said structure to said support;
- and
- at least two dynamic damping systems in said hollow interior having different resonance characteristics;
- one of said dynamic damping systems comprising a first damping mass smaller than said hollow interior and first elastic mounting means for mounting said first damping mass in said hollow interior in spaced relationship to said wall portion, said first damping mass having opposite first and second mounting pins, and said first elastic mounting means including a first viscoelastic damper member encompassing said first mounting pin and extending from said first mounting pin to said wall portion of the rigid structure, and a second viscoelastic damper member encompassing said second mounting pin and extending from said second mounting pin to said wall portion of the rigid structure;
- and
- the other of said dynamic damping systems comprising a second damping mass smaller than said hollow interior and second elastic mounting means for mounting said second damping mass in said hollow interior in spaced relationship to said wall portion, said second damping mass having opposite third and fourth mounting pins, and said second elastic mounting means including a third viscoelastic damper member encompassing said third mounting pin and extending from said third mounting pin to said wall portion of the rigid structure, and a fourth viscoelastic damper member encompassing said fourth mounting pin and extending from said fourth mounting pin to said wall portion of the rigid structure, with the thickness of at least one of said third and fourth viscoelastic damper members between said wall portion and the corresponding mounting pin being different from the thickness of at least one of said first and second viscoelastic damper members between said wall portion and the corresponding mounting pin.
4 more elements
Dependencies are inferred from the claim text.