US3690607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration isolation system
Assignee: Individual
•
Filing: 1970-02-16
•
Granted: 1972-09-12
•
Expires: 1990-02-16
Abstract
Abstract This invention relates to a mounting system for a body, such as a wind tunnel model or a helicopter transmission, by which the vibrational loads in one plane or about axes in a common plane can be isolated from the mount while loads in other directions or about other axes can be transferred directly to the mount.
Inventors
- 👤 Kenneth C Mard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:18
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/001; B64C2027/002
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
180 words
A vibration isolation mounting for transmitting torque about a given axis of a body between the body and a support comprising: a. a coupling connecting the body to the support to transmit the torque about the given axis between the body and the support and permitting body movements about axes normal to the given axis and wherein the coupling is formed by a number of flexible straps connected between the body and the support and which lie substantially perpendicular to radials from the given axis. b. means restraining movements of the body about the axes normal to the given axis and along the given axis including; 1. a hydraulic actuator having a piston and cylinder assembly defining chambers at each side of the piston and connected between the body and the support, the actuator being responsive to and restraining displacements of the body and the support in the direction of the given axis, and 2. a damper operatively connected in series with the piston and cylinder assembly to attenuate vibrations carried by the actuator between the body and the support.
Claim 2
Dependent Claim
180 words
A vibration isolation mounting for transmitting torque about a given axis of a body between the body and a support comprising: a. a coupling connecting the body to the support to transmit the torque about the given axis between the body and the support and permitting body movements about axes normal to the given axis and wherein the coupling is formed by a number of flexible straps connected between the body and the support and which lie substantially perpendicular to radials from the given axis. b. means restraining movements of the body about the axes normal to the given axis and along the given axis including; 1. a hydraulic actuator having a piston and cylinder assembly defining chambers at each side of the piston and connected between the body and the support, the actuator being responsive to and restraining displacements of the body and the support in the direction of the given axis, and 2. a damper operatively connected in series with the piston and cylinder assembly to attenuate vibrations carried by the actuator between the body and the support.
Claim 3
Dependent Claim
25 words
a damper operatively connected in series with the piston and cylinder assembly to attenuate vibrations carried by the actuator between the body and the support.
Claim 4
Dependent Claim
25 words
a damper operatively connected in series with the piston and cylinder assembly to attenuate vibrations carried by the actuator between the body and the support.
Claim 5
Dependent Claim
75 words
Apparatus for mounting a transmission for a thrust producing rotor to the fuselage of an aircraft to reduce the transfer of vibratory rotor hub moments to the fuselage comprising: A. a plurality of members connected between the transmission and the fuselage to react the aerodynamic rotor torque against the fuselage, B. a plurality of units connected between the transmission and the fuselage for isolating vibratory hub moments within the rotor and transmission, each unit including:
Claim 6
Dependent Claim
75 words
Apparatus for mounting a transmission for a thrust producing rotor to the fuselage of an aircraft to reduce the transfer of vibratory rotor hub moments to the fuselage comprising: A. a plurality of members connected between the transmission and the fuselage to react the aerodynamic rotor torque against the fuselage, B. a plurality of units connected between the transmission and the fuselage for isolating vibratory hub moments within the rotor and transmission, each unit including:
Claim 7
Dependent Claim
14 words
a valve controlling the flow of fluid to the hydraulic chambers of the assembly,
Claim 8
Dependent Claim
14 words
a valve controlling the flow of fluid to the hydraulic chambers of the assembly,
Claim 9
Dependent Claim
14 words
a valve controlling the flow of fluid to the hydraulic chambers of the assembly,
Claim 10
Dependent Claim
14 words
a valve controlling the flow of fluid to the hydraulic chambers of the assembly,
Claim 11
Dependent Claim
14 words
a valve controlling the flow of fluid to the hydraulic chambers of the assembly,
Claim 12
Dependent Claim
14 words
a valve controlling the flow of fluid to the hydraulic chambers of the assembly,
Claim 13
Dependent Claim
25 words
a feedback linkage connected between the piston and the valve to position the piston at a selected position of the transmission within the fuselage, and
Claim 14
Dependent Claim
25 words
a feedback linkage connected between the piston and the valve to position the piston at a selected position of the transmission within the fuselage, and
Claim 15
Dependent Claim
25 words
a feedback linkage connected between the piston and the valve to position the piston at a selected position of the transmission within the fuselage, and
Claim 16
Dependent Claim
25 words
a feedback linkage connected between the piston and the valve to position the piston at a selected position of the transmission within the fuselage, and
Claim 17
Dependent Claim
25 words
a feedback linkage connected between the piston and the valve to position the piston at a selected position of the transmission within the fuselage, and
Claim 18
Dependent Claim
25 words
a feedback linkage connected between the piston and the valve to position the piston at a selected position of the transmission within the fuselage, and
Claim 19
Dependent Claim
75 words
Apparatus for mounting a transmission for a thrust producing rotor to the fuselage to an aircraft to reduce the transfer of vibratory rotor hub moments To the fuselage comprising: A. a plurality of members connected between the transmission and the fuselage to react the aerodynamic rotor torque against the fuselage, B. a plurality of units connected between the transmission and the fuselage for isolating vibratory hub moments within the rotor and transmission, each unit including:
Claim 20
Dependent Claim
75 words
Apparatus for mounting a transmission for a thrust producing rotor to the fuselage to an aircraft to reduce the transfer of vibratory rotor hub moments To the fuselage comprising: A. a plurality of members connected between the transmission and the fuselage to react the aerodynamic rotor torque against the fuselage, B. a plurality of units connected between the transmission and the fuselage for isolating vibratory hub moments within the rotor and transmission, each unit including:
Claim 21
Dependent Claim
94 words
a hydraulic accumulator connected to each of the hydraulic chambers to add resiliency to the restraint provided by the piston and cylinder assembly and to isolate vibratory hub moments from the fuselage, wherein: a. the rotor is mounted on an axis extending from the transmission; and b. the members are flexible straps extending tangentially from the transmission to the fuselage, the connections of adjacent straps to the fuselage being alternately offset on opposite sides of a plane normal to the rotor axis to form a small angle between each strap and the normal plane.
Claim 22
Dependent Claim
94 words
a hydraulic accumulator connected to each of the hydraulic chambers to add resiliency to the restraint provided by the piston and cylinder assembly and to isolate vibratory hub moments from the fuselage, wherein: a. the rotor is mounted on an axis extending from the transmission; and b. the members are flexible straps extending tangentially from the transmission to the fuselage, the connections of adjacent straps to the fuselage being alternately offset on opposite sides of a plane normal to the rotor axis to form a small angle between each strap and the normal plane.
Claim 23
Dependent Claim
103 words
a hydraulic accumulator connected to each of the hydraulic chambers to add resiliency to the restraint provided by the piston and cylinder assembly and to isolate vibratory hub moments from the fuselage, wherein: a. the rotor is mounted on a shaft projecting from the transmission; and b. the members include four flexible straps which are substantially parallel to a plane normal to the rotor axis, two of the four straps being connected to react aerodynamic torque in one direction against the fuselage and the other two of the four straps being connected to react aerodynamic torque in the opposite direction against the fuselage.
Claim 24
Dependent Claim
103 words
a hydraulic accumulator connected to each of the hydraulic chambers to add resiliency to the restraint provided by the piston and cylinder assembly and to isolate vibratory hub moments from the fuselage, wherein: a. the rotor is mounted on a shaft projecting from the transmission; and b. the members include four flexible straps which are substantially parallel to a plane normal to the rotor axis, two of the four straps being connected to react aerodynamic torque in one direction against the fuselage and the other two of the four straps being connected to react aerodynamic torque in the opposite direction against the fuselage.
Claim 25
Dependent Claim
75 words
Apparatus for mounting a transmission for a thrust producing rotor to the fuselage of an aircraft to reduce the transfer of vibratory rotor hub moments to the fuselage comprising: A. a plurality of members connected between the transmission and the fuselage to react the aerodynamic rotor torque against the fuselage, B. a plurality of units connected between the transmission and the fuselage for isolating vibratory hub moments within the rotor and transmission, each unit including:
Claim 26
Dependent Claim
75 words
Apparatus for mounting a transmission for a thrust producing rotor to the fuselage of an aircraft to reduce the transfer of vibratory rotor hub moments to the fuselage comprising: A. a plurality of members connected between the transmission and the fuselage to react the aerodynamic rotor torque against the fuselage, B. a plurality of units connected between the transmission and the fuselage for isolating vibratory hub moments within the rotor and transmission, each unit including:
Claim 27
Dependent Claim
102 words
a hydraulic accumulator connected to each of the hydraulic chambers to add resiliency to the restraint provided by the piston and cylinder assembly and to isolate vibratory hub moments from the fuselage, wherein: a. the rotor is mounted on a rotor shaft extending vertically from the transmission; and, b. the members are flexible straps which are connected to the transmission and extend perpendicular to radials from the rotor axis, the adjacent straps connecting to the fuselage alternately above and below the connecting points to the transmission to form a small angle between the strap and a plane normal to the rotor axis.
Claim 28
Dependent Claim
102 words
a hydraulic accumulator connected to each of the hydraulic chambers to add resiliency to the restraint provided by the piston and cylinder assembly and to isolate vibratory hub moments from the fuselage, wherein: a. the rotor is mounted on a rotor shaft extending vertically from the transmission; and, b. the members are flexible straps which are connected to the transmission and extend perpendicular to radials from the rotor axis, the adjacent straps connecting to the fuselage alternately above and below the connecting points to the transmission to form a small angle between the strap and a plane normal to the rotor axis.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-12 | 1976-03-13 | 1976-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-12 | 1980-03-13 | 1980-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-12 | 1984-03-13 | 1984-09-12 | $7700.00 | Window Closed / Lapsed |