A special purpose-designed combat knife to provide for passive retention of the knife without having the gripping hand fully closed. The essence of the disclosure is a handle which allows for passive retention in the user's hand. The knife uses a finger slot shape which allows retention of the handle without closing the user's hand around the handle of the knife. The user of the knife can also operate a handgun or other instrument in the same hand with the palm of the user relaxed about the handle without dropping the knife. A preferred embodiment includes a blade which protrudes from the lower end of the knife handle. An alternate embodiment includes a folding blade and locking design in which the knife blade protrudes from the top end of the handle.

A light emitting fire knife device includes a blade structure, a first planar light emitting component, a second planar light emitting component, a handle structure, and a first cylindrical light emitting component. The blade structure includes a first distal end and a second distal end opposite the first distal end. The first planar light emitting component is disposed on a first planar surface of the blade structure and the second planar light emitting component is disposed on a second planar surface of the blade structure, where the second planar surface is opposite the first planar surface. The handle structure includes a third distal end and a fourth distal end opposite the third distal end, where the third distal end is configured to removably secure to the second distal end of the blade structure. The first cylindrical light emitting component is secured around the handle structure proximate the fourth distal end of the handle structure.

A light emitting fire knife device includes a blade structure, a first planar light emitting component, a second planar light emitting component, a handle structure, and a first cylindrical light emitting component. The blade structure includes a first distal end and a second distal end opposite the first distal end. The first planar light emitting component is disposed on a first planar surface of the blade structure and the second planar light emitting component is disposed on a second planar surface of the blade structure, where the second planar surface is opposite the first planar surface. The handle structure includes a third distal end and a fourth distal end opposite the third distal end, where the third distal end is configured to removably secure to the second distal end of the blade structure. The first cylindrical light emitting component is secured around the handle structure proximate the fourth distal end of the handle structure.

A self-defense device generally comprises a wearable piece of jewelry, such as a ring, that comprises an integrated blade element. The ring comprises an inner diameter sized to accommodate a user's finger or the ring may receive size inserts to effectively reduce the ring's inner diameter so as to accommodate a size of the user's finger. The blade may be serrated, barbed, hooked, and the like to provide for a more effective device. The blade may comprise various supports to add rigidity; may be contoured to accommodate the form of the user's finger; and may comprise a sheath to secure the blade during non-use. The self-defense device may also comprise multiple rings secured together to provide for multiple blades.

A self-defense device generally comprises a wearable piece of jewelry, such as a ring, that comprises an integrated blade element. The ring comprises an inner diameter sized to accommodate a user's finger or the ring may receive size inserts to effectively reduce the ring's inner diameter so as to accommodate a size of the user's finger. The blade may be serrated, barbed, hooked, and the like to provide for a more effective device. The blade may comprise various supports to add rigidity; may be contoured to accommodate the form of the user's finger; and may comprise a sheath to secure the blade during non-use. The self-defense device may also comprise multiple rings secured together to provide for multiple blades.

A self-defense pocket knife with handle of suitable proportion to be grasped in closed fist and a conveyance system configured for the emergency manual conveyance of a blade from a position for storage to a position for use without requiring the user to appreciably alter or compromise grip upon the handle during the course of such conveyance.

A self-defense pocket knife with handle of suitable proportion to be grasped in closed fist and a conveyance system configured for the emergency manual conveyance of a blade from a position for storage to a position for use without requiring the user to appreciably alter or compromise grip upon the handle during the course of such conveyance.

A tool. A firearm, a blade and an ancillary device are disposed within or on the tool. The firearm comprises a barrel through which a bullet passes to exit the firearm, a firing pin moveable to a firing position by operation of a firing pin control, a firing pin lock retaining the firing pin in the firing position when in the locked position, a biasing member for applying a force to the firing pin with the firing pin restrained against the force by the locked position of the firing pin lock. A trigger releases the firing pin lock from the locked position, such that the force causes the firing pin to strike the charge proximate the bullet. The bullet then exits the barrel.

A tool. A firearm, a blade and an ancillary device are disposed within or on the tool. The firearm comprises a barrel through which a bullet passes to exit the firearm, a firing pin moveable to a firing position by operation of a firing pin control, a firing pin lock retaining the firing pin in the firing position when in the locked position, a biasing member for applying a force to the firing pin with the firing pin restrained against the force by the locked position of the firing pin lock. A trigger releases the firing pin lock from the locked position, such that the force causes the firing pin to strike the charge proximate the bullet. The bullet then exits the barrel.

Ballistic shields having a convex configuration including a middle section and forward angled left side and right side wings. The shields may also include at least three manual or electro-mechanical roller units, transparent windows or display devices with cameras or other motions sensors, and spikes, electro-shock devices, or non-lethal incapacitating devices.