The scariest moment in on-orbit servicing is contact. Two objects moving at orbital velocity, one trying to grab the other, with no second chance if the grab goes wrong. US10414053B2, "Robotic gripper for autonomous rendezvous and capture of satellites" (assigned to NASA), claims the mechanism that makes that contact survivable.
The mechanism the claim protects is a gripper designed for capture under uncertainty. A servicing or debris-removal target often has no handle, no docking port, no cooperative markers — it was built to operate, not to be caught. The claimed gripper addresses grabbing such an object autonomously, which means tolerating misalignment and relative motion at the instant of contact. The CPC is precise: B25J 15/0028 and B25J 15/0052 (robotic gripping mechanisms) joined to B64G 1/1078 (devices for use in spacecraft), with B64G 2004/005 marking the on-orbit-servicing context.
Here is the dependent-claim-is-the-moat point in concrete form. Anyone can claim "a gripper that catches a satellite." The asset is in the specifics of how it accommodates the capture dynamics — compliance, contact sequencing, the geometry that turns a near-miss into a secure grab. That is where prosecution narrows a broad idea into a defensible mechanism, and it is where this kind of grant earns its value.
Why NASA on the assignee line matters: this is foundational, government-developed IP in a field — on-orbit servicing, assembly, and manufacturing — that commercial players are now racing into. Government-origin capture mechanisms tend to become the reference art that the MacDonald Dettwiler and Northrop-class servicers build around or design past. The related MacDonald Dettwiler capture-mechanism grant US9764478B2 shows the commercial side of the same problem.
The honest limit: a granted gripper claim is a method, not a demonstrated catch. Reduction to practice in orbit is a separate, expensive thing. But as a map marker, this grant tells you that the enabling step for the entire servicing economy — secure capture of an uncooperative target — has been worked, claimed, and is now contested IP. Everything downstream of servicing, from life-extension to active debris removal, depends on solving exactly this grab.