ENDURALOCK LLC
On-orbit satellite servicing and assembly system for refueling, upgrading, and repairing satellites in space
- Sector
- Aerospace
- Headquarters
- Lenexa, KS
- Founded
- 2013
- Latest Form D
- $701K, Dec 2023
- Total capital
- $7.6M
- Federal grants
- $6.6M
- 9 awards · 2021–2026
- Rank in peer group#56 of 155
- Private capital raised
- $1M
- 3 Form D · last Dec 2023
- 34 months since last filing
- Federal contracts
- None on recordNo federal contract awards found.
- Granted patents
- 20
- 20 pending · first 2016
- Rank in peer group#13 of 155
Capital timeline
Latest events
- Federal grantNASA · Phase I · SBIR Phase I - Upgrade Module Using Onelink(tm) For Satellite Servicing Missions$225K
- Federal grantDefense · Phase II · Satellite Docking System With Mechanical Linkage, Data And Power Connection, And Fuel Transfer$1.2M
- Federal grantDefense · Phase I · Mechanically Locking, High Vibration Resistant Electrical Connectors To Enable Uninterrupted Data Transmission$75K
- Federal grantDefense · Phase II · Sequential Phase II Small Business Innovation Research (SBIR) Tactical Funding Increase (tacfi) - Space-qualified Robotic Manipulators And Fasteners$1.5M
- Private capital raisedForm D · SEC · 3rd filing$701K
- Federal grantDefense · Phase I · Mechanically locking, high vibration resistant fuel line connectors and hydraulic fittings to improve flight line maintenance times on the B-1 and B-2 by eliminating the need for safety wire$75K
- Federal grantDefense · Phase I · Latching and Fastening Mechanism for On-orbit Servicing, Assembly, and Manufacturing (OSAM) Applications$250K
- Private capital raisedForm D · SEC · 2nd filing$285K
- Private capital raisedForm D · SEC · 1st filing$30K
Show 3 earlier federal awards
- Federal grantDefense · Phase II · B-1, B-2 and KC-135 flight line maintenance time reduction via the development of Enduralock fasteners, self-aligning nut plates, and locking V-Band clamps as substitute components$1.2M
- Federal grantDefense · Phase II · B-1, B-2, and KC-135 ground support equipment reliability improvement through the development of Enduralock mechanically locking, high vibration resistant fasteners as substitute components$1.2M
- Federal grantDefense · Phase II · Development and qualification of size No.4-No.10 mechanically locking, high vibration resistant fasteners for elimination of safety wire in missiles, satellites, space vehicles and robotic in-space assembly$750K
Node area is scaled to amount. Form D reports securities sold, which can differ from an announced round; filings are numbered in the order they were made.
Standing among 155 peers
Line = medianAerospace · Device
- Federal grants#56 · top 36%
- Granted patents#13 · top 8%
Cumulative measures favor older companies. Rankings describe position today, not outcome. Below the median, ranks show as a band rather than a number.
Founders and team
Researcher links verified by same-company patents and grants- Harold HessResearcherExecutive OfficerLinked by 6 patents · $75K in grants as PI
What it has protected
USPTO · 20 granted of 40- New patentSystems And Methods For Latching And Fastening Objects For In-space Servicing, Assembly, And ManufacturingUSPTOUS 12,760,826
- GrantedSystems And Methods For Latching And Fastening Objects For In-space Servicing, Assembly, And ManufacturingUSPTOUS 12,686,509
- PendingLocking Mechanisms For Electrical ConnectorsUSPTOApplication 18896238
Show all 40 patent records
- Systems And Methods For Latching And Fastening Objects For In-space Servicing, Assembly, And ManufacturingOct 13, 2026 · US 12,760,826Granted
- Systems And Methods For Latching And Fastening Objects For In-space Servicing, Assembly, And ManufacturingJul 21, 2026 · US 12,686,509Granted
- Locking Mechanisms For Electrical ConnectorsMar 26, 2026 · Application 18896238Pending
- Systems And Methods For Latching And Fastening Objects For In-space Servicing, Assembly, And ManufacturingOct 9, 2025 · Application 19170203Pending
- Nut Plate Assembly Including Floating Nut With Locking ArrangementSep 11, 2025 · Application 18764958Pending
- Fastener Assemblies And Nut Plate Assemblies For Fastener AssembliesMay 13, 2025 · US 12,297,857Granted
- Nut Plate Assembly Including Tiltable Floating Nut With Curved InterfaceJan 7, 2025 · US 12,188,510Granted
- Locking Mechanisms For Conduit Fastener AssembliesJul 25, 2024 · Application 18417151Pending
- Systems And Methods For Latching And Fastening Objects For In-space Servicing, Assembly, And ManufacturingJul 11, 2024 · Application 18409280Pending
- Fastener Assemblies And Nut Plate Assemblies For Fastener AssembliesMar 19, 2024 · US 11,933,340Granted
- Fastener Lock Mechanisms With Lock ArmsFeb 6, 2024 · US 11,892,026Granted
- Systems And Methods For Latching And Fastening Objects For In-space Servicing, Assembly, And ManufacturingSep 7, 2023 · Application 18117150Pending
- Locking Mechanisms With Deflectable Lock MemberMar 7, 2023 · US 11,598,364Granted
- Locking Mechanisms With Deflectable Lock MemberSep 7, 2021 · US 11,111,950Granted
- Locking Mechanisms With Substrate-fixed WashersFeb 23, 2021 · US 10,927,880Granted
- Locking Mechanisms With Deflectable Lock MemberOct 13, 2020 · US 10,801,540Granted
- Spring-loaded Nut PlateAug 25, 2020 · US 10,753,383Granted
- Spring-loaded Nut PlateJun 9, 2020 · US 10,677,280Granted
- Tools And Ratchet Locking Mechanisms For Threaded FastenersJun 25, 2019 · US 10,330,139Granted
- Locking Mechanisms With Substrate-fixed WashersJun 18, 2019 · US 10,323,678Granted
- Locking Fastener With Deflectable LockFeb 26, 2019 · US 10,215,217Granted
- Ratchet Locking Mechanism For Threaded FastenerJan 3, 2019 · Application 16125513Pending
- Locking Mechanisms With Deflectable Washer MembersNov 13, 2018 · US 10,125,807Granted
- Ratchet Locking Mechanism For Threaded FastenerOct 9, 2018 · US 10,094,413Granted
- Locking Fastener With Deflectable LockDec 12, 2017 · US 9,841,046Granted
- Tools And Ratchet Locking Mechanisms For Threaded FastenersMay 23, 2017 · US 9,657,766Granted
- Ratchet Locking Mechanism For Threaded FastenerFeb 9, 2016 · US 9,255,600Granted
- Locking Mechanisms With Substrate-fixed WashersApplication PCTUS2017021733Pending
- Spring-loaded Nut PlateApplication 62465997Pending
- Locking Mechanisms With Deflectable Washer MembersApplication PCTUS2016050534Pending
- Locking Fastener With Deflectable LockApplication PCTUS2016027744Pending
- Locking Mechanisms With Substrate-fixed WashersApplication 62310475Pending
- Locking Mechanisms For FastenersApplication 62215631Pending
- Locking Mechanisms For FastenersApplication 62193437Pending
- Locking Fastener With Deflectable LockApplication 62148846Pending
- Tools And Ratchet Locking Mechanisms For Threaded FastenersApplication PCTUS2014051006Pending
- Tools And Ratcheting FastenersApplication 61891002Pending
- Tools And Ratcheting FastenersApplication 61866332Pending
- Locking Mechanisms For Conduit Fastener AssembliesApplication 63440298Pending
- Systems And Methods For Latching And Fastening Objects For In-space Servicing, Assembly, And ManufacturingApplication PCTUS2025023110Pending
Related companies, and why
- STARFISH SPACE, INC.Similar federal contract value in Aerospace · null in contracts
- KAI, LLCSimilar federal contract value in Aerospace · null in contracts
- URBAN SKY THEORY INC.Similar federal contract value in Aerospace · null in contracts
- ZENITH AEROSPACE INCSimilar federal contract value in Aerospace · null in contracts
- Cowboy Space CorpSimilar federal contract value in Aerospace · null in contracts
- General AstronauticsSimilar federal contract value in Aerospace · null in contracts
Regulatory activity · Aerospace
- Nondiscrimination in Federally Assisted Programs of NASA-Effectuation of Title VI of the Civil Rights Act of 1964National Aeronautics and Space Administration
- Special Conditions: AMAC Aerospace, The Boeing Company Model 747- 8 Airplane; Side-Facing SeatsFederal Aviation Administration
- Standard Instrument Approach Procedures, and Takeoff Minimums and Obstacle Departure Procedures; Miscellaneous AmendmentsFederal Aviation Administration
- Operating Limitations at John F. Kennedy International AirportFederal Aviation Administration
- Operating Limitations at New York LaGuardia AirportFederal Aviation Administration
- Special Conditions: Honeywell Aerospace US LLC, Dassault Aviation Model Falcon 900EX Airplane; Electronic System Security Protection From Unauthorized External AccessFederal Aviation Administration
Rules are matched to sector, not to company. Recent activity in a sector is context rather than a signal about this business — until rules are matched to what a company actually builds, the section is shown as context and nothing more.
Sources
Federal grants from SBIR/STTR, NIH, NSF and DoD records. Federal contracts from USAspending.gov. Private capital from SEC Form D. Patents from USPTO. Publications from OpenAlex. Regulatory activity from the Federal Register. Press matched on company name.
How to read this page
Figures show associations in public records, not causes or predictions. Nothing here is investment advice. An em-dash means no record was found under this company's name, not that none exists.
Data freshness
SEC Form D filings through . SBIR and STTR awards through .