Flexible Surfaces Patents (Class 244/134A)
  • Patent number: 6129314
    Abstract: A deicer comprises a skin heating device immediately subjacent an outer skin overlying an apex of a leading edge, and a skin deflection device immediately subjacent the outer skin chordwise aft of the apex. The skin heating device prevents the formation of ice over the apex and the skin deflection device deflects the outer skin to expulse ice formed chordwise aft of the apex. A controller controls the heating and deflection cycles to minimize power consumption of the deicer.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: October 10, 2000
    Assignee: The B. F. Goodrich Company
    Inventors: Michael J. Giamati, James C. Putt, David B. Sweet, Tommy M. Wilson, Jr.
  • Patent number: 6102333
    Abstract: The present invention is a de-icing system that uses electro-magnetic actuators mounted within the airfoil of an aircraft to effect de-icing. Advantageously, the actuators have low-energy requirements. Each actuator includes conductive strips fabricated on a flexible dielectric sheet. The conductive strips are wound into coils with the actuators shaped into a flattened elongated tube. The axis of the winding coils is coincident with the longitudinal axis of the elongated tube. Low adhesive coatings may be used to enhance the efficiency of the electro-magnetic coils in expulsing the ice accretion.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: August 15, 2000
    Assignee: Innovative Dynamics, Inc.
    Inventors: Joseph J. Gerardi, Richard B. Ingram
  • Patent number: 5921502
    Abstract: An electro-thermal or hot gas anti-icer of the "running-wet" type is mounted at the leading edge of an airfoil. Mechanical de-icers are mounted on the surfaces aft of the anti-icer. The mechanical de-icers throw off ice without creating runback water, thereby eliminating runback refreeze ridges caused by a known hybrid ice-protection system. Advantageously, the de-icers are of a type in which the airfoil has a semi-rigid skin that forms an aerodynamic surface of the airfoil, and in which there is at least one mechanical actuator for flexing the skin.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: July 13, 1999
    Assignee: Cox & Company, Inc.
    Inventors: Kamel M. Al-Khalil, Thomas F. W. Ferguson, Dennis M. Phillips
  • Patent number: 5890677
    Abstract: A device for de-icing an external wall of a vehicle, of the type including a flexible covering (8) capable of at least partially covering the wall, and a compressor (9) whose delivery orifice (9B) is connected to the flexible covering in order to inflate it, via a control component (10). Advantageously, the intake orifice (9A) of the compressor (9) is connected to the flexible covering (8) via a controllable connection (11) which allows depressurization of the flexible covering and, when the pressure reduction reaches a predetermined value, feeds outside air to the compressor.
    Type: Grant
    Filed: June 11, 1997
    Date of Patent: April 6, 1999
    Assignee: Eurocopter France
    Inventors: Didier Marie Jean Pierre Guillot, Didier Houssat
  • Patent number: 5845878
    Abstract: An aircraft deicing assembly 101 for attachment to an airfoil 99 includes a deflection shell 101 disposed over a deflection means 102. The deflection shell is comprised of a primary layer 116 comprised of a high strength fabric reinforced with a phenolic resin and a backing layer 115 comprised of a high strength fabric reinforced with an epoxy resin. The thickness of the backing layer is varied as a function of curvature of the airfoil and spanwise length of the airfoil.
    Type: Grant
    Filed: August 6, 1996
    Date of Patent: December 8, 1998
    Assignee: The BFGoodrich Company
    Inventors: Richard Lawrence Rauckhorst, III, Kevin Lee Leffel
  • Patent number: 5813631
    Abstract: A pneumatic deicing system includes a deicer assembly comprised of an outer layer, an inner ply, and a plurality of inflatable members provided therebetween. The deicer assembly is disposed directly on top of and bonded to an airfoil. The deicer assembly is inflated through an inflation port. Fluid is drained from the deicer assembly through a drain valve.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: September 29, 1998
    Assignee: The B. F. Goodrich Company
    Inventors: Donald E. Butler, Richard L. Rauckhorst, III, Thomas A. Waples, Alan J. Fahrner
  • Patent number: 5782435
    Abstract: The present invention is de-icing system that uses electromagnetic actuators mounted within the airfoil of an aircraft to effect de-icing. Advantageously, the actuators have low voltage and current requirements. Each actuator includes conductive strips fabricated on a flexible dielectric sheet. The conductive strips are wound into coils with the actuator shaped into a flattened elongated tube. The axis of the winding coils is coincident with the longitudinal axis of the elongated tube.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: July 21, 1998
    Assignee: Cox & Company, Inc.
    Inventors: Richard B. Ingram, Gerald W. Codner, Joseph J. Gerardi
  • Patent number: 5743494
    Abstract: An improved ice protection apparatus 8 includes a top polyurethane layer 10, an active layer 12, and a base layer 14 cured together into a unitary matrix, wherein the base layer is either polyurethane or chloroprene. The active layer may be either a thermal ice protector, a pneumatic ice protector, or an electro magnetic protection apparatus.
    Type: Grant
    Filed: August 9, 1996
    Date of Patent: April 28, 1998
    Assignee: The BFGoodrich Company
    Inventors: Michael John Giamati, Robert Willard Ray, Jr., Terry Lee Sluss
  • Patent number: 5685506
    Abstract: An insect abatement system prevents adhesion of insect debris to surfaces which must be kept substantially free of insect debris. An article is coated with an insect abatement coating comprising polyorganosiloxane with a Shore A hardness of less than 50 and a tensile strength of less than 4 MPa. A method for preventing the adhesion of insect debris to surfaces includes the step of applying an insect abatement coating to a surface which must be kept substantially free of insect debris.
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: November 11, 1997
    Assignee: General Electric Company
    Inventors: Clifford Lawrence Spiro, Timothy Brydon Burnell, Jeffrey Hayward Wengrovius
  • Patent number: 5681014
    Abstract: A control system for aircraft airfoils, which is an improvement over existing aileron, flap, spoiler and deicing technologies, in providing increased roll control and aerodynamic lifting and braking functions; with greatly reduced drag increased airspeed and precise control performance at all airspeeds, due to clean uninterrupted airfoil surfaces and directional conformance of wing to the intended flight path.This is accomplished by use of a torque tube mounted internally in the aeroelastic airfoil structure, and firmly attached to the airfoil tip structure. In operation the inboard end of the torque tube when rotated differentially on its pivot axis, imposes a helicoidal twist on the aeroelastic airfoil structure, with maximum angle of incidence at the outboard wing tip, providing near perfect lateral roll control or cooperating to provide increased lift and braking or maneuverability, also the foregoing operations provide automatic deicing. The torque tube can be operated by conventional control systems, e.
    Type: Grant
    Filed: October 17, 1994
    Date of Patent: October 28, 1997
    Inventor: Harry W. Palmer
  • Patent number: 5609314
    Abstract: An aircraft deicing assembly 101 for attachment to an airfoil 99 includes a deflection shell 101 disposed over a deflection means 102. The deflection shell is comprised of a primary layer 116 comprised of a high strength fabric reinforced with a phenolic resin and a backing layer 115 comprised of a high strength fabric reinforced with an epoxy resin. The thickness of the backing layer is varied as a function of curvature of the airfoil and spanwise length of the airfoil.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: March 11, 1997
    Assignee: The B. F. Goodrich Company
    Inventors: Richard L. Rauckhorst, III, Kevin L. Leffel
  • Patent number: 5562265
    Abstract: A pneumatic deicing system includes a deicer assembly comprised of an outer layer having a low modulus of elasticity, an inner ply, and a plurality of inflatable members provided therebetween. The deicer assembly is disposed directly on top of and bonded to an airfoil. The inflatable members are inflated with an inflation apparatus that inflates in an inflation pattern comprised of a sequence of high frequency pressure pulses superimposed on a low frequency inflation pressure wave.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: October 8, 1996
    Assignee: The B. F. Goodrich Company
    Inventor: Richard L. Rauckhorst, III
  • Patent number: 5558304
    Abstract: An apparatus for deicing an outer shell includes an element comprised of shaped memory metal which undergoes a transformation from a weaker low temperature form (Martensite) to a stronger, high temperature form (Austenite) when the element is heated through its transformation temperature. The change in shape is utilized to deflect the outer shell to thereby shed ice accumulated thereon.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: September 24, 1996
    Assignee: The B. F. Goodrich Company
    Inventor: Lowell J. Adams
  • Patent number: 5553814
    Abstract: An aircraft deicing assembly 101 for attachment to an airfoil 99 includes a deflection shell 101 disposed over a deflection means 102. The deflection shell is comprised of a primary layer 116 comprised of a high strength fabric reinforced with a phenolic resin and a backing layer 115 comprised of a high strength fabric reinforced with an epoxy resin. The thickness of the backing layer is varied as a function of curvature of the airfoil and spanwise length of the airfoil.
    Type: Grant
    Filed: June 2, 1994
    Date of Patent: September 10, 1996
    Assignee: The B.F. Goodrich Company
    Inventors: Richard L. Rauckhorst, III, Kevin L. Leffel
  • Patent number: 5544845
    Abstract: An improved ice protection apparatus 8 includes a top polyurethane layer 10, an active layer 12, and a base layer 14 cured together into a unitary matrix, wherein the base layer is either polyurethane or chloroprene. The active layer may be either a thermal ice protector, a pneumatic ice protector, or an electro magnetic protection apparatus.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: August 13, 1996
    Assignee: The B.F. Goodrich Company
    Inventors: Michael J. Giamati, Robert W. Ray, Jr., Terry L. Sluss
  • Patent number: 5449133
    Abstract: A de-icer for attachment to an airfoil subject to impingement by an airstream. The airstream induces a stagnation line near the leading edge of the airfoil. The de-icer has inflatable passages that are parallel to the airstream overlying the airfoil on one side of the stagnation line, and inflatable passages that are parallel to the leading edge overlying the airfoil on the other side of the stagnation line. The de-icer maintains the aerodynamic characteristics of the airfoil during de-icer inflation. A method of manufacturing the de-icer is also provided.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: September 12, 1995
    Assignee: The B. F. Goodrich Company
    Inventors: Duain N. Ely, Joseph H. Macarchenia
  • Patent number: 5427332
    Abstract: A modular ice protection system for an airfoil includes a deflection assembly attached to the airfoil and a removable outer shell having a modulus of elasticity of at least 40,000 kPa impermanently disposed over the deflection assembly, wherein the deflection assembly causes distortion of the separable outer shell during de-icing. The deflection assembly may likewise be removable from an underlying substructure which is attached to the airfoil.
    Type: Grant
    Filed: November 10, 1993
    Date of Patent: June 27, 1995
    Assignee: The B. F. Goodrich Company
    Inventors: Richard L. Rauckhorst, III, Kevin L. Leffel
  • Patent number: 5398890
    Abstract: A pneumatic deicing system for deicing an airfoil includes a flexible deicing member having inflatable tube-like passages provided therein for being inflated with a pressurized fluid, wherein the deicing member is bonded to a shell having a snap type connector for mating with another connector either on the airfoil or integrated into another part of the shell. An air connector extends through the shell and is utilized for putting the deicing member in fluid connection with the fluid source. Radar absorptive material may be disposed between the shell and the deicing member for reducing the radar cross section of the airfoil.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: March 21, 1995
    Assignee: The B. F. Goodrich Company
    Inventors: Norbert A. Weisend, Jr., Alan J. Fahrner
  • Patent number: 5393014
    Abstract: A pneumatic deicing distribution valve 10 includes a body 12, a cap assembly 14 and a rotary member 30 contained therein. Rotary member 30 selectively connects an input port 18 with a plurality of output ports 20 for selectively pressurizing one of a number of deicing apparatuses. A vacuum port 24 places all output ports not being pressurized under vacuum.
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: February 28, 1995
    Assignee: The B. F. Goodrich Company
    Inventors: Norbert A. Weisend, Jr., Alan J. Fahrner, Robert N. Hohenshil
  • Patent number: 5356096
    Abstract: An aircraft deicing assembly 101 for attachment to an airfoil 99 includes a deflection shell 101 disposed over a deflection means 102. The deflection shell is comprised of a primary layer 116 comprised of a high strength fabric reinforced with a phenolic resin and a backing layer 115 comprised of a high strength fabric reinforced with an epoxy resin. The thickness of the backing layer is varied as a function of curvature of the airfoil and spanwise length of the airfoil.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: October 18, 1994
    Assignee: The B. F. Goodrich Company
    Inventors: Richard L. Rauckhorst, III, Kevin L. Leffel
  • Patent number: 5337978
    Abstract: A pneumatic deicer assembly 32 for attachment to an airfoil includes a pair of plies 52, 54 which are stitched together with a zig-zag stitch line which periodically crosses over the airfoil leading edge.
    Type: Grant
    Filed: October 29, 1992
    Date of Patent: August 16, 1994
    Assignee: The B.F. Goodrich Company
    Inventors: Alan J. Fahrner, Norbert A. Weisend, Jr.
  • Patent number: 5314145
    Abstract: A de-icer comprises a compressible member immediately subjacent an outer skin overlying an apex of a leading edge. The compressible member facilitates deflection of the outer skin overlying the compressible member toward the substructure when the skin deflection means deflects the outer skin.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: May 24, 1994
    Assignee: The B.F. Goodrich Company
    Inventor: Richard L. Rauckhorst, III
  • Patent number: 5310142
    Abstract: A deicer assembly 32 for attachment to an airfoil includes a plurality of substantially parallel tube-like passages 36 formed by stitching parallel lines 78 through a pair of intermediate plies 52, 54. A zig-zag stitch line 76 criss-crosses the parallel tube lines 78 so that when the deicer is inflated by pressurized fluid a dimple matrix inflation pattern is formed.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: May 10, 1994
    Assignee: The B. F. Goodrich Company
    Inventor: Norbert A. Weisend, Jr.
  • Patent number: 5288355
    Abstract: A structural member having integral surface de-icing capability and method of manufacture are described. The structural member includes a non-metallic high tensile modulus fiber-reinforced matrix structural backing, thin force and displacement generation means, and a thin high tensile modulus outer skin bonded to said backing and said force and displacement generation means which is postioned between the backing and the skin. The force and displacement generation means may include one or more inflatable tubular members and/or electromagnetic apparatus. The structural member may be substituted for the aluminum alloy leading edge structural skin typically employed on modern aircraft.
    Type: Grant
    Filed: November 18, 1991
    Date of Patent: February 22, 1994
    Assignee: The B.F. Goodrich Company
    Inventors: Kevin L. Leffel, James C. Putt, Richard L. Rauckhorst
  • Patent number: 5275362
    Abstract: A pneumatic deicing system includes a deicer assembly 32 comprised of an outer ply 52, an inner ply 54, and a plurality of inflatable tube-like members 36 provided therebetween. The deicer assembly is disposed directly on top of and bonded to the airfoil 34. Pressurized fluid is provided to the tube-like members via a manifold 40 in the deicer assembly which is positioned directly over a plurality of ducts 42 provided through the airfoil.
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: January 4, 1994
    Assignee: The B. F. Goodrich Company
    Inventors: Norbert A. Weisend, Jr., Ernest E. Householder
  • Patent number: 5271598
    Abstract: An improved high pressure impulse valve includes a pilot section, an intermediate section, and an output section which are pressurized to approximately equilibrium with the inlet pressure during a load portion of the operating cycle and which cooperate to provide extremely rapid full opening of the output section to release fluid under pressure from an accumulator through an output section piston seat. The valve is particularly suitable for use in combination with pneumatic impulse separation systems such as those employed for deicing aircraft surfaces.
    Type: Grant
    Filed: September 30, 1992
    Date of Patent: December 21, 1993
    Assignee: The B. F. Goodrich Company
    Inventors: Robert N. Hohenshil, James C. Putt
  • Patent number: 5248116
    Abstract: A structural member having integral surface de-icing capability and method of manufacture are described. The structural member includes a non-metallic high tensile modulus fiber-reinforced matrix structural backing, thin force and displacement generation means, and a thin high tensile modulus outer skin bonded to said backing and said force and displacement generation means which is positioned between the backing and the skin. The force and displacement generation means may include one or more inflatable tubular members preferably formed into a tube mat having bonded overlapped portions so as to distribute displacement forces. This reduces concentrated stress and fatigue while increasing surface shear forces across the ice accreting surface with each tube actuation. The structural member may be substituted for the aluminum alloy leading edge structural skin typically employed on modern aircraft.
    Type: Grant
    Filed: February 7, 1992
    Date of Patent: September 28, 1993
    Assignee: The B. F. Goodrich Company
    Inventor: Richard L. Rauckhorst
  • Patent number: 5160102
    Abstract: A system for controlling the inflation and deflation of deicer members for breaking up ice formation thereon. A non-regulated pressure source is connected to a controller valve and an ejector valve, wherein the ejector valve supplies a vacuum source to the controller valve as needed to keep the deicer members deflated. The controller valve is operative upon actuation to direct pressurized fluids to the inflatable deicer members and upon a predetermined build-up of pressure interrupts the flow of fluids from the pressure source while locking the inflatable deicer members in their inflated condition until the controller valve is de-actuated so it places the deicer units in communication with a vacuum.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: November 3, 1992
    Assignee: The B. F. Goodrich Company
    Inventor: Kenneth A. Hlavac
  • Patent number: 5129598
    Abstract: An attachable electro-impulse de-icer for de-icing an aircraft structural member includes an inductor coil disposed in proximity with the outer surface of the structural member. The coil is supported by a flexible, ice-accumulating support member (surface ply) that permits the coil to move relative to the structural member. Preferably the coil and support member are formed in an integral construction that can be attached to the leading edge of the structural member. The coil and support member are rapidly, and forcefully, displaced away from the structural member upon passing a short-duration, high-current pulse through the coil. The current flow creates an electromagnetic field that induces eddy currents in the support member (if made of metal), and the structural member (if made of metal). Upon collapse of the electromagnetic field in the coil, the support member is pulled rapidly to its rest position adjacent the structural member.
    Type: Grant
    Filed: December 22, 1989
    Date of Patent: July 14, 1992
    Assignee: B. F. Goodrich Co.
    Inventors: Lowell J. Adams, Norbert A. Weisend, Jr., Thomas E. Wohlwender
  • Patent number: 5112011
    Abstract: An inflatable deicer having deicing tubes formed by adjacent rows of stitching between inner and outer plies with a manifold tube intersecting and extending across the deicing tubes. The stitching of the deicing tubes is turned at the edges of the manifold to reinforce the edges of the manifold tube. The deicing tubes are narrow and the inflation pressure is high for a short activation time at relatively long intervals to shed thin ice.
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: May 12, 1992
    Assignee: The B. F. Goodrich Company
    Inventors: Norbert A. Weisend, Jr., Bernard F. Trares, Kevin L. Leffel
  • Patent number: 5098061
    Abstract: A rapid acting valve capable of delivering a high pressure impulse of compressible fluid has a pilot section, and an output section. The output section is pressurized to approximately equilibrium with the inlet pressure during the load portion of the operating cycle. During the dump portion of the operating cycle, the pilot section and output section cooperate to provide extremely rapid full opening of the output section to release fluid under pressure from an accumulator through an output section piston seat. The valve is particularly suitable for use in combination with pneumatic impulse separation systems such as those employed for deicing aircraft surfaces. A plurality of valves may be arranged in series such that dumping of the first tier valve initiates dumping of one or more second tier valves in the series each of which in turn initiates dumping of one or more third tier valves, and so forth until all valves in the series have been actuated, each by its preceding valve.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: March 24, 1992
    Assignee: The B. F. Goodrich Company
    Inventors: Robert N. Hohenshil, James C. Putt, Richard L. Rauckhorst, David M. Ronyak
  • Patent number: 5098037
    Abstract: A structural member having integral surface de-icing capability and method of manufacture are described. The structural member includes a non-metallic high tensile modulus fiber-reinforced matrix structural backing, thin force and displacement generation means, and a thin high tensile modulus outer skin bonded to said backing and said force and displacement generation means which is positioned between the backing and the skin. The force and displacement generation means may include one or more inflatable tubular members and/or electromagnetic apparatus. The structural member may be substituted for the aluminum alloy leading edge structural skin typically employed on modern aircraft.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: March 24, 1992
    Assignee: The B. F. Goodrich Company
    Inventors: Kevin L. Leffel, James C. Putt, Richard L. Rauckhorst
  • Patent number: 5074497
    Abstract: A deicer pad for use on the airfoil of an aircraft wherein the pad has an elastomeric flexible covering with metallic spaced strips embedded therein in side by side relationship. An electromagnetic field pulse generator is mounted within the airfoil adjacent to the strips for imparting successive pulses to the strip for movement thereof to effect de-icing.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: December 24, 1991
    Assignee: The B. F. Goodrich Company
    Inventor: Ronald W. Phillips, II
  • Patent number: 5035380
    Abstract: A deicer control system for a pneumatic deicer wherein a solenoid operated valve directs either pressurized air or creates and pulls a vacuum on the inlet port of a control valve. The inlet port communicates to an outlet port in the control valve post moveable piston which in one position maintains communication between the ports and in a second position is operative to block communication between the ports. The piston has one face of the piston with two distinct effective surface areas, wherein one surface area communicates at all times with the inlet port and upon a predetermined force on such one surface area such piston is moved to expose both effective surface areas and block communication between the inlet port and the outlet ports of the control valve.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: July 30, 1991
    Assignee: The B. F. Goodrich Company
    Inventors: Norbert A. Weisend, Jr., Paul G. Tritt
  • Patent number: 5022611
    Abstract: A pressure limiter valve for regulating the inflation and deflation of inflatable tubes of a deicer wherein such valve has a housing with a central chamber with inlet and outlet ports communicating therewith. The inlet port is selectively subjected to a vacuum or a fluid pressure. An annular shoulder with a central aperture separates the ports so that a piston moveable within the bore between a first position and a second position can seat on the shoulder and isolate the ports. The one face of the piston has a first and second operative surface wherein the first operative surface communicates at all times to the inlet port via a passageway so that when the force on such first operative surface is slightly greater than a piston biasing force the piston is in a first position which causes the piston to expose both operative surfaces to the fluid pressure from the inlet port.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: June 11, 1991
    Assignee: The B. F. Goodrich Company
    Inventors: Norbert A. Weisend, Jr., Paul G. Tritt
  • Patent number: 4961549
    Abstract: A pneumatic deicer for a strut or airfoil having a knife-edge or wedge leading edge wherein one spanwise tube of the deicer envelopes the leading edge and is positioned with at least 55% but not more than about 75% of the width of the spanwise deicer tube positioned on one surface of the wedge, the remaining portion of the width being positioned on the remaining surface of the wedge.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: October 9, 1990
    Assignee: The B. F. Goodrich Company
    Inventor: Albert M. LaRue
  • Patent number: 4878647
    Abstract: A rapid acting valve capable of delivering a high pressure impulse of compressible fluid has a pilot section, an intermediate section and an output section which are pressurized to approximately equilibrium with the inlet pressure during the load portion of the operating cycle and which cooperate to provide extremely rapid full opening of the output section to release fluid uner pressure from an accumulator through an output section piston seat. The valve is particularly suitable for use in combination with pneumatic impulse separation systems such as those employed for deicing aircraft surfaces.
    Type: Grant
    Filed: September 2, 1988
    Date of Patent: November 7, 1989
    Assignee: The B. F. Goodrich Company
    Inventors: James C. Putt, Robert N. Hohenshil
  • Patent number: 4865291
    Abstract: An airfoil deicer and method for deicing an airfoil wherein the deicer has an outer skin having an elevated modulus of elasticity and a means for introducing a small deflection into the outer skin thereby creating substantial chord-wise tension in the outer skin, the deflection being induced in less than 0.250 seconds. In the method of deicing, the deflection is induced periodically and being completed within a time span of about 0.250 seconds to remove accumulations of ice as thin as 0.06 centimeters.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: September 12, 1989
    Assignee: The B. F. Goodrich Company
    Inventors: James A. Briscoe, James C. Putt, Ronald W. Phillips, II
  • Patent number: 4836474
    Abstract: A de-icer for de-icing those ice accreting surfaces of a skin formed of a material having a substantially elevated modulus, wherein the de-icer is positioned between a support surface and a surface of the skin obverse to the ice accreting surface and inflated to produce a deformation in the skin sufficient to detach and dislodge accumulations of ice on the ice accreting surface but insufficient to exceed an endurance limit for the material from which the skin is formed. The invention finds use in de-icing aircraft surfaces such as wings, tail surfaces, propellers, rotors such as rotating wings, tail rotors and nose cones.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: June 6, 1989
    Assignee: The B. F. Goodrich Company
    Inventors: James A. Briscoe, James C. Putt, Ronald W. Phillips, II, Kevin L. Leffel
  • Patent number: 4826108
    Abstract: A de-icer for de-icing those ice accreting surfaces of a skin formed of a material having a substantially elevated modulus, wherein the de-icer is positioned between a support surface and a surface of the skin obverse to the ice accreting surface and inflated to produce a deformation in the skin sufficient to detach and dislodge accumulations of ice on the ice accreting surface but insufficient to exceed an endurance limit for the material from which the skin is formed. The invention finds use in de-icing aircraft surfaces such as wings, tail surfaces, propellers, rotors such as rotating wings, tail rotors and nose cones.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: May 2, 1989
    Assignee: The B. F. Goodrich Company
    Inventors: James A. Briscoe, James C. Putt, Ronald W. Phillips, II, Gary V. Tenison, Kevin L. Leffel
  • Patent number: 4779823
    Abstract: A deicer pad for use on an airfoil wherein the airfoil has a leading edge and a stagnation line. The deicer pad is constructed to have an intermediate portion or region and two spaced apart portions or regions and with inflatable passageways only located on or within the two spaced apart portions. The pad is mounted on the airfoil so that the intermediate portion which is non-extensible or non-stretchable overlies the leading edge and the stagnation line of the airfoil. The stagnation line is generally parallel to the leading edge of the airfoil. The passageways in the two spaced apart portions of the deicer are inflatable either simultaneously or in seriatim order and effect the breaking up of the ice over the entire deicer. The inflatable passageways are the sole means for deicing.
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: October 25, 1988
    Assignee: The B. F. Goodrich Company
    Inventors: Duain N. Ely, Joseph H. Macarchenia
  • Patent number: 4763861
    Abstract: A microwave rendezvous system for use on a tanker aircraft for aerial refueling of a receiver aircraft. The tanker providing a larger rendezvous envelope in space between the tanker and receiver aircraft thereby requiring less tedious navigation and attention during a refueling operation.
    Type: Grant
    Filed: March 5, 1987
    Date of Patent: August 16, 1988
    Assignee: The Boeing Company
    Inventor: Frank J. Newman
  • Patent number: 4735554
    Abstract: A self-regulating vacuum control valve with a needle valve operating in a narrow central bore that regulates the flow of pressurized air from a pressure source into such narrow central bore for passage and discharge from an enlarged bore. A vacuum is pulled in passageways in such enlarged bore which exert a vacuum pull on a control chamber and on one end of a diaphragm means. The diaphragm means is connected to the needle valve and has its one end subjected to atmospheric pressure. Such diaphragm and needle valve are spring biased to increase the air flow past such needle valve in opposition to the vacuum pull on such diaphragm. Such spring bias is adjustable to provide a predetermind vacuum pull on the control chamber that can be connected to a deicer pad for maintaining a predetermined vacuum pull thereon.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: April 5, 1988
    Assignee: The B.F. Goodrich Company
    Inventor: Ronald W. Phillips, II
  • Patent number: 4733834
    Abstract: A deicer control circuit wherein a pressurized air source is connected to control valves and a regulating valve. Such regulating valve has a vacuum line output line that is also connected to such control valves. The control valves, on actuation by a timer, will sequence the pressure line and the vacuum line to alternately inflate and deflate the deicer units. The control valves also provide a sealing off or locking in of the pressurized deicer units in this sequence in response to a pressure sensor.
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: March 29, 1988
    Assignee: The B. F. Goodrich Company
    Inventor: Ronald W. Phillips, II
  • Patent number: 4706911
    Abstract: An airfoil deicer and method for deicing an airfoil wherein the deicer has an outer skin having an elevated modulus of elasticity and a means for introducing a small deflection into the outer skin thereby creating substantial chord-wise tension in the outer skin, the deflection being induced in less than 0.250 seconds. In the method of deicing, the deflection is induced periodically and being completed within a time span of about 0.250 seconds to remove accumulations of ice as thin as 0.06 centimeters.
    Type: Grant
    Filed: January 27, 1986
    Date of Patent: November 17, 1987
    Inventors: James A. Briscoe, James C. Putt, Ronald W. Phillips, II
  • Patent number: 4687159
    Abstract: A pneumatic deicer having a deformable sheet formed of a woven cloth substrate and a fluid-impervious, resilient coating. Inextensible threads are woven into the fabric in a spaced parallel array to define fluid passages therebetween. The passages may be coupled with a source of fluid such as air so that the deicer may be cyclically expanded and contracted to break up ice accumulations on the deicer. A cover ply is secured to the outer face of the deformable layer to expand and contract therewith and to add wear resistance to the deicer. The periphery of the inner face of the deformable sheet may be secured to the leading edge of the aircraft wing through an inner or base ply or, in the alternative, it may be secured directly thereto without the inclusion of the inner or base ply.
    Type: Grant
    Filed: February 22, 1985
    Date of Patent: August 18, 1987
    Assignee: The B. F. Goodrich Company
    Inventor: Pedro W. Kageorge
  • Patent number: 4642028
    Abstract: A variable pitch propeller is provided with a blade cuff, with a radially inner portion of the cuff formed in closely surrounding relation to the cylindrical shank of the blade, and with a nose portion of the cuff extending radially outwardly and smoothly flaring to the full cordwise dimension of the cuff, through the conventional blade opening in a spinner. The arrangement eliminates regions for ice entrapment or build-up, and permits a heater boot to be applied to the leading edge down to or even into the blade opening.
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: February 10, 1987
    Assignee: The Cessna Aircraft Company
    Inventors: William C. Buckman, Michael R. Tapp
  • Patent number: 4613102
    Abstract: A pneumatic deicer having a deformable sheet formed of a fluid-impervious, resilient material adapted to be secured with respect to the leading edge of an aircraft wing. A rigid template with spaced, parallel apertures is secured to the face of the deformable sheet remote from the aircraft wing. The regions of the deformable sheet corresponding to the apertures form fluid passages adapted to be coupled with a source of fluid such as air so that the deicer may be cyclically expanded and contracted to break up ice accumulations on the deicer. A cover ply is secured to the outer face of the deformable sheet to expand and contract therewith and to add wear resistance to the deicer. The periphery of the inner face of the deformable sheet may be secured to the leading edge of the aircraft wing through an inner or base ply or, in the alternative, it may be secured directly thereto without the inclusion of the inner or base ply.
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: September 23, 1986
    Assignee: The B. F. Goodrich Company
    Inventor: Pedro W. Kageorge
  • Patent number: 4595442
    Abstract: A pneumatic deicer and a method for making such deicer having a plurality of inflatable tubes which are capable of being distended by inflation to break up the accumulation of ice. The tubes are constructed with a nonflowing elastomeric compound leaving a passageway therein after vulcanization of the deicer by external heat.
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: June 17, 1986
    Assignee: The B. F. Goodrich Company
    Inventors: Bernard F. Trares, Robinson F. Nichols
  • Patent number: 4561613
    Abstract: A deicer pad for use on an aircraft wing wherein the deicer pad is constructed to have an intermediate portion and two spaced apart portions. The pad is a composite member of at least two plies of materials stitched along the intermediate portion to provide two spanwise passageways, and stitched in a zig-zag pattern along the spaced apart portions to form chordwise passageways. Alternate chordwise passageways communicate directly with the spanwise passageways while the remaining chordwise passageways communicate with the adjacent spanwise passageways around the stitching. The remaining chordwise passageways also communicate with the adjacent alternate chordwise passageways around the stitching which stitching forms the separation between alternate chordwise passageways.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: December 31, 1985
    Assignee: The B. F. Goodrich Company
    Inventor: Norbert A. Weisend, Jr.