The In-Line Pocket Clip is inherently uncomplicated, requiring no increase in the number of parts in the knife compared with a typical folding knife with pocket clip. In fact, since the clip doubles as the knife’s ‘back-spacer’ when retracted, there is actually a net reduction in part-count compared with a typical folding knife featuring both a clip and back spacer. This means less weight and complication, fewer fasteners -- an eloquent and robust assembly.

The In-Line Pocket Clip assembly consists of two parts. The retractable clip/back-spacer and a rectangular ‘guide pin’/bearing which constrains the clip’s linear movement to and from the open/closed positions. These parts are made of 17-4 stainless spring steel, a precipitation- hardening alloy popular in aerospace and medical machinery and specialized industrial applications. It hardens to approximately 45 Rc, and is prized for its toughness and tremendous wear characteristics. 

The clip locates into its open and closed positions with a ‘click’ and resists initial movement from either position thanks to a unique ball-detent system. While any number of detent arrangements could be developed to best suit  the requirements of a particular knife design, this iteration is comprised of a simple flexure/cutout in one of the liners. This cutout is fitted with a small press-fit ball bearing. This  hardened steel ball drops into one of two corresponding holes in the clip as it’s deployed and retracted.

The clip features a small textured area that, when assembled into the knife, is located at the knife’s back or ‘heel.’ This  assists the operator to locate the proper place to push/slide up and deploy the clip, and provides a grippy surface that aids in the clip’s deployment. The liners are also cut in relief around this textured area to allow easy  actuation for those with larger fingers.

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