Patent US3789401A successfully refreshed from Google Patents.
US3789401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frame for low frequency source
Assignee: United States Department of the Navy
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Filing: 1971-02-16
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Granted: 1974-01-29
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Expires: 1991-02-16
Abstract
Abstract A transducer array is supported by a plurality of interconnected longitudinal and lateral fiber-glass members which terminate in a rigid, rectangular frame work defining the limits of a transducer mounting area. All points of juncture between the fiber glass members and the rigid framework are frictionally secured to induce no coupling-induced internal stresses at the juncture points. By mounting the high-energy transducer elements on the fiber-glass members, a tendency for resonance and sympathetic vibration within the supporting structure is dampened to within tolerable limits. Contemporary, rigid frameworks, especially those frameworks that are welded together, resonate with the projection of high-energy acoustic power and tear themselves apart.
Inventors
- 👤 J Behrendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:59
CPC Classifications
G; G10; G10K; G10K11/00; G10K11/004; G10K11/006
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
169 words
An assembly for supporting a high acoustic energy transducer array comprising: a framework including rigid load bearing members having means for frictionally connecting said load bearing members together to define an array mounting area; a plurality of longitudinal members reaching across said array mounting area, each fashioned from a flexible acoustically decoupling material having means for frictionally securing said longitudinal members between a first pair of said load bearing members; and a plurality of lateral members reaching across said array mounting area, each fashioned from a flexible acoustically decoupling material having means for frictionally securing said lateral members between a second pair of said load bearing members and further having means for frictionally joining said lateral members to said longitudinal members to form a plurality of cavities each cavity having a transducer mounted therein, upon transmitting said high acoustic energy, said longitudinal and said lateral members, being frictionally secured and frictionally joined, are acoustically decoupled from said transducer array thereby preventing the creation of self-destructive resonance within the assembly.
Claim 2
Dependent Claim
169 words
An assembly for supporting a high acoustic energy transducer array comprising: a framework including rigid load bearing members having means for frictionally connecting said load bearing members together to define an array mounting area; a plurality of longitudinal members reaching across said array mounting area, each fashioned from a flexible acoustically decoupling material having means for frictionally securing said longitudinal members between a first pair of said load bearing members; and a plurality of lateral members reaching across said array mounting area, each fashioned from a flexible acoustically decoupling material having means for frictionally securing said lateral members between a second pair of said load bearing members and further having means for frictionally joining said lateral members to said longitudinal members to form a plurality of cavities each cavity having a transducer mounted therein, upon transmitting said high acoustic energy, said longitudinal and said lateral members, being frictionally secured and frictionally joined, are acoustically decoupled from said transducer array thereby preventing the creation of self-destructive resonance within the assembly.
Claim 3
Dependent Claim
70 words
An assembly according to claim 1 further including: a panel member formed of a flexible acoustically decoupling material having means for frictionally securing said panel member to said load bearing members, said panel member being disposed around the periphery of said array mounting area and including means for being frictionally secured to said longitudinal members and said lateral members for further preventing the creation of self-destructive resonance within the assembly.
Claim 4
Dependent Claim
54 words
An assembly according to claim 2 in which all the means for frictionally joining said longitudinal members and said lateral members cooperate to create a series of dampened nodes along the longitudinal and lateral members preventing the sympathetic vibration and resonance of the members when said transducer array is projecting said high acoustic energy.
Claim 5
Dependent Claim
64 words
An assembly according to claim 2 in which said load bearing members are at least one set of four elongate rigid elements arranged in a rectangular configuration and said means for frictionally connecting is a plurality of bolt-nut combinations reaching through coinciding holes provided in portions of the rigid elements thereby ensuring said rectangular configuration free from coupling-induced internal stresses in the rigid elements.
Claim 6
Dependent Claim
67 words
An assembly according to claim 4 in which said load bearing members are two sets of four elongate rigid elements each arranged in a rectangular configuration and aligned with one another and said framework further includes, a plurality of spacer angles formed of a flexible acoustically decoupling material having means for frictionally engaging the periphery of said panel member to each said set of elongate rigid elements.
Claim 7
Dependent Claim
41 words
An assembly according to claim 5 further including: first and second means each affixed to both said sets of elongate rigid elements at laterally opposite extremes for mounting said assembly and defining a lateral axis about which said assembly is rotated.
Claim 8
Dependent Claim
70 words
An aSsembly according to claim 6 in which said means for frictionally joining said longitudinal members to said lateral members include, at least one connector angle element disposed at each longitudinal-lateral-member-intersection formed with bores disposed to coinciding with similarly disposed holes at each said intersection, and a self-locking bolt element extending through each of the coinciding bores and holes to ensure the frictional joining of the lateral and longitudinal members.
Claim 9
Dependent Claim
27 words
An assembly according to claim 7 further including: a bonding agent interposed at all the frictional interconnections to aid in maintaining the structural integrity of said assembly.
References Cited (Backward Citations)
US2610018A
Cited
US2844809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |