Inventor
SCHMALING DAVID N
US42 patents
⚠️ This page may combine multiple inventors who share the name “SCHMALING DAVID N”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SIKORSKY AIRCRAFT CORP
20 patentsUS6848886B2Feb 1, 2005
Snubber
SIKORSKY AIRCRAFT CORP93 citations98
US5690474ANov 25, 1997
Optimized composite flexbeam for helicopter tail rotors
SIKORSKY AIRCRAFT CORP64 citations94
US7841829B2Nov 30, 2010
Rotor system with pitch flap coupling
SIKORSKY AIRCRAFT CORP22 citations92
US7585153B1Sep 8, 2009
Upper rotor control system for a counter-rotating rotor system
SIKORSKY AIRCRAFT CORP39 citations92
US7530790B2May 12, 2009
Rotor blade folding system
SIKORSKY AIRCRAFT CORP34 citations92
US6695583B2Feb 24, 2004
Snubber-vibration damper system for a bearingless main rotor
SIKORSKY AIRCRAFT CORP34 citations92
US6318527B1Nov 20, 2001
Inertial vibration isolator spring for helicopter
SIKORSKY AIRCRAFT CORP23 citations92
US5738494AApr 14, 1998
Optimized composite flexbeam for helicopter rotors
SIKORSKY AIRCRAFT CORP49 citations92
US7047596B2May 23, 2006
Structural bushing application for highly loaded composites lugs
SIKORSKY AIRCRAFT CORP45 citations90
US5954480ASep 21, 1999
Vibration isolator for rotorcraft
SIKORSKY AIRCRAFT CORP25 citations88
US5562416AOct 8, 1996
Helicopter rotor blade mounting assembly
SIKORSKY AIRCRAFT CORP31 citations88
US7686584B2Mar 30, 2010
Elastomeric bearing with heatable shims
SIKORSKY AIRCRAFT CORP10 citations84
US6942455B2Sep 13, 2005
Strain isolated trim tab
SIKORSKY AIRCRAFT CORP18 citations77
US9616996B2Apr 11, 2017
Stiff inplane elastomeric rotorhead
SIKORSKY AIRCRAFT CORP2 citations73
US5901616AMay 11, 1999
Inertial mass for vibration isolators
SIKORSKY AIRCRAFT CORP7 citations71
US10272996B2Apr 30, 2019
Abrasion resistant pivot bearing
SIKORSKY AIRCRAFT CORP2 citations61
US7798442B2Sep 21, 2010
Rotor assemblies having automatic blade folding systems
SIKORSKY AIRCRAFT CORP5 citations61
US11104431B2Aug 31, 2021
Rotor blade snubber retainer for a rotary wing aircraft
SIKORSKY AIRCRAFT CORP0 citations46
US10589849B2Mar 17, 2020
Trim tab retention system, an aircraft employing same and a method of retaining a trim tab within a blade housing
SIKORSKY AIRCRAFT CORP0 citations45
US9441495B2Sep 13, 2016
Rotary wing aircraft pitch beam attachment with anti-rotation plate design
SIKORSKY AIRCRAFT CORP1 citations43
UNITED TECHNOLOGIES CORP
9 patentsUS4621980ANov 11, 1986
Fiber reinforced composite spar for a rotary wing aircraft
UNITED TECHNOLOGIES CORP68 citations95
US5499903AMar 19, 1996
Snubber bearing mounting assembly for bearingless rotors
UNITED TECHNOLOGIES CORP26 citations92
US5460487AOct 24, 1995
Pitch adjustment assembly for bearingless main rotors
UNITED TECHNOLOGIES CORP46 citations92
US5431538AJul 11, 1995
Hybrid composite flexbeam for a helicopter bearingless main rotor assembly
UNITED TECHNOLOGIES CORP45 citations92
US5372479ADec 13, 1994
Flexbeam for a helicopter bearingless main rotor assembly
UNITED TECHNOLOGIES CORP36 citations92
US5286167AFeb 15, 1994
Spar-to-hub joint for a flexbeam helicopter rotor
UNITED TECHNOLOGIES CORP28 citations92
US4930983AJun 5, 1990
Hybrid helicopter rotor hub retention plate
UNITED TECHNOLOGIES CORP26 citations92
US4793727ADec 27, 1988
Two-step composite joint
UNITED TECHNOLOGIES CORP24 citations82
US5035576AJul 30, 1991
Propeller blade pin attachment
UNITED TECHNOLOGIES CORP17 citations74
LOCKHEED CORP
8 patentsUS11292587B2Apr 5, 2022
Hingeless helicopter rotor with high stiffness and low drag configuration
LOCKHEED CORP2 citations70
US10858096B1Dec 8, 2020
Folding horn concept for rigid rotor blade fold
LOCKHEED CORP3 citations70
US11999472B2Jun 4, 2024
Rotor blade non-counterbored retention assembly via a sliding clamped bushing
LOCKHEED CORP2 citations64
US11753156B2Sep 12, 2023
Main rotor blade using integral metallic center block strap assembly
LOCKHEED CORP0 citations59
US11498669B1Nov 15, 2022
Rotor system
LOCKHEED CORP0 citations52
US11884387B2Jan 30, 2024
Rotor assembly connectable to rotor hub and having pitch control
LOCKHEED CORP0 citations51
US11066158B2Jul 20, 2021
Low drag high capacity pitch bearing for rigid rotor aircraft
LOCKHEED CORP0 citations47
US11299265B2Apr 12, 2022
Rotor blade folding system
LOCKHEED CORP0 citations44
SCHMALING DAVID N
4 patentsUS5120195AJun 9, 1992
Clevis joint capable of accommodating substantial pivotal motion between its joined members and loading along its axis
SCHMALING DAVID N32 citations92
US8142158B2Mar 27, 2012
Compact load path swashplate assembly
SCHMALING DAVID N19 citations90
US8882462B2Nov 11, 2014
Lead stop for rotor system with fluid-elastomeric lead/lag damper
SCHMALING DAVID N8 citations81
US8578753B2Nov 12, 2013
Impact test fixture with simulated centrifugal force
SCHMALING DAVID N4 citations56