| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Motor vehicle airbag, device | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Protective breast plate, device | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Retaining harness, device | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Athletic supporter, device | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Protective glasses, device | Is a | False | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Protective body armor, device | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Protective helmet, device | Is a | False | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Protective vest, device | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Protective clothing material, device | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Protective shield, device | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Personal protective equipment | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Protective cup, device | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Life preserver flotation device | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Helmet | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Pipette safety mouthpiece | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Conductive apron | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Tourniquet cuff bandage, non-latex | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Tourniquet cuff bandage, Hevea-latex | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Surgical helmet system | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Pipette shield | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Laser beam eye protector, patient | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Bedrail pad | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Aquatic sting barrier | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Laser beam eye protector, staff | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Seizure bite block | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Ostomy bag protector | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Shin guard | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Wheelchair leg rest pad | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  | 
| Application of protective device | Direct device | True | Protective device | Inferred relationship | Existential restriction modifier | 1 | 
| Protective personal flotation device | Is a | True | Protective device | Inferred relationship | Existential restriction modifier |  |