# Removable Protective Cap for Robot Arm Parts > This patent describes a cap designed to be easily attached and removed from a robot arm element, using a clever system of interlocking shapes and a flexible part to hold it securely. - **Patent:** US 12736122 - **Original title:** Cap for a robot arm - **Granted:** 2026 - **Status:** Active - **Times cited:** 0 - **Field:** robotics, mechanical, manufacturing, automation, consumer_electronics ## What it does The patent describes a cap that can be quickly connected to and disconnected from a specific part of a robot arm. This cap attaches to the outer surface of a robot arm element, which has a housing with both an outer and inner surface. The connection works by fitting an 'upper cavity' on the cap over an 'upper protrusion' on the arm, and at least one 'first lower cavity' on the cap over a 'first lower protrusion' on the arm. Once these parts are aligned, a 'flexible suspension element' locks the protrusions into their cavities, keeping the cap firmly in place. For example, this cap could cover a sensitive sensor or a joint on an industrial robot arm, protecting it from dust or impacts while allowing for easy removal when maintenance is needed. ## What it does NOT cover - Does not cover caps that are permanently attached, such as by welding or strong adhesives. - Does not cover caps that require tools like screws, bolts, or clips for attachment and removal. - Does not cover caps that use magnetic forces or simple friction to stay connected. - Does not cover caps designed for non-robot arm applications, like covers for static machinery. - Does not cover caps that integrate active electronic components, beyond their specific attachment mechanism. ## The clever bit The clever part is the specific combination of cavities and protrusions, secured by a flexible suspension element. This allows for a strong, engaged connection that is also easily reversible without needing tools, balancing security with convenience. ## Real-world examples 1. Protective covers for robot arm joints in manufacturing plants 2. Caps for sensor modules mounted on robotic manipulators 3. Dust covers for end-effector connections on industrial robots 4. Aesthetic covers for exposed wiring or components on collaborative robots ## Why it matters This type of removable cap design is important for the practical use of robots in industrial settings. It allows robot components to be protected from environmental factors like dust or debris, which can extend the lifespan of the machinery. The easy-to-remove design also simplifies maintenance and repair, reducing the time robots are out of service and improving overall operational efficiency. ## Frequently asked questions ### What does Removable Protective Cap for Robot Arm Parts cover? This patent describes a cap designed to be easily attached and removed from a robot arm element, using a clever system of interlocking shapes and a flexible part to hold it securely. ### When does this patent expire? This patent is expected to expire on September 15, 2046, when the invention enters the public domain. ### What problem does this patent solve? This type of removable cap design is important for the practical use of robots in industrial settings. It allows robot components to be protected from environmental factors like dust or debris, which can extend the lifespan of the machinery. The easy-to-remove design also simplifies maintenance and repair, reducing the time robots are out of service and improving overall operational efficiency. ### What does this patent NOT cover? Does not cover caps that are permanently attached, such as by welding or strong adhesives. **Full plain-English explainer:** https://patentbrief.org/patent/us/12736122/cap-for-a-robot-arm **Original patent:** https://patents.google.com/patent/US12736122 --- _Source: PatentBrief — https://patentbrief.org. Patent facts are from public records; the plain-English explanation is PatentBrief's._ ## Related patents Semantically similar inventions in the PatentBrief corpus: - [Robot Design for Carrying Objects While Walking](https://patentbrief.org/patent/us/12246441/torso-protrusion-for-robotic-manipulation-of-objects-and-related-technology) — This patent describes a robot with a torso, legs, arms, and a special forward-extending protrusion designed to help it carry objects while it walks. - [Exoskeleton Shoulder Joint That Adapts to Your Arm's Movement](https://patentbrief.org/patent/us/10814473/mechanism-for-alleviating-the-effects-of-joint-misalignment-between-users-and-we) — This patent describes a shoulder exoskeleton that uses a special slip mechanism to prevent the robot's joints from getting out of sync with a user's natural arm movements, making it more comfortable and effective. - [How Humanoid Robot Actuators Connect with a Smart Wire Assembly](https://patentbrief.org/patent/us/12734717/humanoid-robot-with-advanced-wiring-assembly) — This patent describes a specific way to connect two moving parts (actuators) in a humanoid robot using a wire bundle that routes through openings and connects to circuit boards with different numbers of pins. - [How a Robotic Exoskeleton Helps Your Shoulder Move](https://patentbrief.org/patent/us/10800031/spherical-parallel-manipulator-architecture-for-shoulder-robotic-exoskeleton) — This patent describes a robotic shoulder exoskeleton using multiple straight-moving actuators arranged in a "spherical parallel manipulator" to assist or rehabilitate arm movements while preventing joint misalignment. - [How a Refillable Capsule Plug Seals Cleaning Concentrates](https://patentbrief.org/patent/us/11958662/starlink-gen-3) — A specialized plug design for refillable cleaning product capsules that ensures a secure, leak-proof seal when the capsule is attached to a bottle.