Variants
The United States produced a massive array of slipjoint knife models from the mid-19th century to the present day. The following is a list of representative models and their defining features: *''Peanut''—a very small (3" or less) pocketknife, with a slightly irregular ovaloid shape resembling an elongated peanut. Generally has two blades of different sizes/profiles opening from the same end. *''Barlow''—a medium-sized pocketknife of tapered oval construction, with one or two blades of different sizes/profiles opening from the same end. *''Sunfish'' or ''Elephant's Toenail''—a small pocket knife with a very wide body. Usually has two blades, one of which has the same wide body as the handle. The blades usually open from either end. *''Congress''—a small pocket knife with a shallow concave back and shallow convex top. Usually carries four blades opening at opposite ends. *''Sowbelly'' or ''Stockman knife''—a medium-sized pocket knife of 3" to 4", with a bend in the body. Three blades with one clip point, one sheepsfoot, and a spey blade is a common configuration. Blades usually open from both ends. *''Canoe''—a medium-sized knife 3" to 4", rather wide with a slight curve. Generally with one large and one small blade at opposite ends. *''Trapper''—a medium-sized pocket knife with a rounded end which tapers slightly towards the knife end. Two blades with a clip point and a spey blade is a common configuration. Both blades open from the same end.Legal status
In several countries, such as the United Kingdom, slipjoints are used over locking folders due to laws regarding carrying knives for general use. In Germany, because the use of locking one handed opening (OHO) knives is restricted, slipjoint knives are a viable alternative.References
Pocket knives {{Knife-stub