Fastener assembly and method of assembly of the fastener assembly
US-2025116288-A1 · Apr 10, 2025 · US
for bolts or shafts without holes, grooves, or notches for locking members {(by rings resilient in their plane F16B21/18)}
for bolts or shafts without holes, grooves, or notches for locking members {(by rings resilient in their plane F16B21/18)} · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F16B21/20 |
| Official title | for bolts or shafts without holes, grooves, or notches for locking members {(by rings resilient in their plane F16B21/18)} |
| Display label | for bolts or shafts without holes, grooves, or notches for locking members {(by rings resilient in their plane F16B21/18)} |
| Total patents | 62 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 6 |
| 2017 | 8 |
| 2018 | 8 |
| 2019 | 6 |
| 2020 | 9 |
| 2021 | 5 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Serviceable Post Retainer
US-2024384743-A1 · Nov 21, 2024 · US
Fixing device
US-2024318681-A1 · Sep 26, 2024 · US
Push-on fastener
US-12092145-B2 · Sep 17, 2024 · US
Fastening Clip
US-2023313820-A1 · Oct 5, 2023 · US
Anti-rotation pin for compression fitting
US-11680493-B2 · Jun 20, 2023 · US
Adaptable push-on stud fastener
US-11486422-B2 · Nov 1, 2022 · US
Expanding retention locking plug
US-11415163-B2 · Aug 16, 2022 · US
Push-on fastener
US-2022243757-A1 · Aug 4, 2022 · US
Contoured differential gear washer with defined fluid flow path
US-11306805-B2 · Apr 19, 2022 · US
Easily removeable push-on spring nut
US-11149775-B2 · Oct 19, 2021 · US
Screw-retaining device and screw-retaining kit
US-11060552-B2 · Jul 13, 2021 · US
Method of fastening a panel
US-10982702-B2 · Apr 20, 2021 · US
Fastener assembly
US-10935066-B2 · Mar 2, 2021 · US
Additively manufactured auxiliary device and method for attaching a connection part
US-10890290-B2 · Jan 12, 2021 · US
Connecting device for improved alignment
US-10851822-B2 · Dec 1, 2020 · US
Vacuum adjustment device having a collet coupling
US-10840124-B2 · Nov 17, 2020 · US
Method of sizing a cavity in a part
US-10822988-B2 · Nov 3, 2020 · US
Adaptable push-on stud fastener
US-2020309171-A1 · Oct 1, 2020 · US
Expanding retention locking plug
US-2020224705-A1 · Jul 16, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16B21/20?
- CPC F16B21/20 is the Cooperative Patent Classification code for “for bolts or shafts without holes, grooves, or notches for locking members {(by rings resilient in their plane F16B21/18)}.”
- How many patents are filed under CPC F16B21/20 (for bolts or shafts without holes, grooves, or notches for locking members {(by rings resilient in their plane F16B21/18)})?
- Our database includes 62 publications tagged with this CPC code.
- Is patent activity under CPC F16B21/20 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).