Abstract: A muzzle-loading rifle for use with a primer of the type having a shell and a piston fitted within the shell and adapted for igniting gunpowder in the rifle to fire a bullet. The rifle includes a barrel and a breech plug having an opening for receiving the primer and connected to the barrel. A movable bolt is fitted within the rifle for movement toward the breech plug and adjacent the primer. A spring-loaded primer sealing device is mounted to the movable bolt for engaging the shell of the primer and for pressing against it to help seal the end of the movable bolt to the shell of the primer to control the travel of gases and residue. The spring-loaded primer sealing device is mounted to the movable bolt for engaging the shell of the primer only and does not engage against the piston portion of the primer.

Abstract: A muzzle-loading rifle for use with a primer of the type having a shell and a piston fitted within the shell and adapted for igniting gunpowder in the rifle to fire a bullet. The rifle includes a barrel and a breech plug having an opening for receiving the primer and connected to the barrel. A movable bolt is fitted within the rifle for movement toward the breech plug and adjacent the primer. A spring-loaded primer sealing device is mounted to the movable bolt for engaging the shell of the primer and for pressing against it to help seal the end of the movable bolt to the shell of the primer to control the travel of gases and residue. The spring-loaded primer sealing device is mounted to the movable bolt for engaging the shell of the primer only and does not engage against the piston portion of the primer.

Abstract: A bolt assembly for a firearm, wherein the bolt assembly is intended to move inside an inner cavity of a receiver of the firearm and comprises a body, a removable bolt head, at least one protruding element that tends to protrude elastically from the body, so that when allowed to protrude elastically unhindered, the bolt assembly cannot be inserted inside the inner cavity of the receiver. The connection of the bolt head to the body causes the protruding element to elastically contract, enough to allow the bolt assembly to be inserted inside the inner cavity of the receiver. Thus, a single elastic protruding element enables the user to be warned if trying to assemble the body without the bolt head into the receiver.

Abstract: A breech plug for removable engagement with a muzzle-loading firearm barrel having a seating surface that forms an oblique angle with the longitudinal axis of the barrel. The breech plug includes a circumferential tightening mechanism. The circumferential tightening mechanism is configured to move the breech plug along the longitudinal axis within the firearm barrel. The breech plug also includes a continuous flange with a circumferential distal edge. The distal edge is configured to form a seal with the firearm barrel oblique angle seating surface upon movement of the breech plug by the circumferential tightening mechanism.

Abstract: Muzzle-loading rifle, which comprises a breech plug (1) and a barrel (2), both fixed in a connection area (3), characterized in that the breech plug (1) is provided with a continuous flange (11) that presses from inside against a seating surface (12) of the barrel (2) when the breech plug (1) is fitted in the interior of the barrel (2), so that said pressure increases when the powder (7) explodes on the second end (5) of the breech plug (1). As a result, the seal between the breech plug (1) and the barrel (2) is strengthened and the gunpowder is prevented from reaching the connection area (3), thereby making it easier to detach the breech plug (1).

Abstract: Muzzle-loading rifle, which comprises a breech plug (1) and a barrel (2), both fixed in a connection area (3), characterised in that the breech plug (1) is provided with a continuous flange (11) that presses from inside against a seating surface (12) of the barrel (2) when the breech plug (1) is fitted in the interior of the barrel (2), so that said pressure increases when the powder (7) explodes on the second end (5) of the breech plug (1). As a result, the seal between the breech plug (1) and the barrel (2) is strengthened and the gunpowder is prevented from reaching the connection area (3), thereby making it easier to detach the breech plug (1).

Abstract: A firearm having a frame and a barrel pivotally mounted to the frame, and further including a locking block pivotally mounted to the frame and movable between a first position and a second position, wherein in the first position the locking block engages the barrel to prevent pivotal motion thereof; and a trigger mechanism for a firearm having a neutral center of gravity, the trigger member having a geometry that results in an equal and/or symmetric distribution of its mass relative to the pivot point of the trigger, wherein impact caused by dropping the firearm will result in substantially equal application of forces on opposed sides of the trigger member, thereby reducing the likelihood of unintended discharge of the firearm.

Abstract: Static pedalling fitness apparatus (1) that, with great accuracy, simulates the real excercise of pedalling on a conventional road biclycle while standing up and swinging the bicycle sideways. For this purpose, the fitness apparatus (1) comprises a fixed part (2) which is basically unmovable with respect to the floor, a movable part (3) which is capable of swinging laterally with respect to the fixed part (2) and which includes the set of pedals (4) and the seat (5), and another tilting part that is the handlebar (6) of the apparatus (1). The handlebar (6) is capable of oscillating separately from the oscillation of the movable part (3), i.e. the handlebar (6) presents a relative swinging movement with respect to the set of pedals (4) and the seat (5).

Abstract: Static pedalling fitness apparatus (1) that, with great accuracy, simulates the real excercise of pedalling on a conventional road biclycle while standing up and swinging the bicycle sideways. For this purpose, the fitness apparatus (1) comprises a fixed part (2) which is basically unmovable with respect to the floor, a movable part (3) which is capable of swinging laterally with respect to the fixed part (2) and which includes the set of pedals (4) and the seat (5), and another tilting part that is the handlebar (6) of the apparatus (1). The handlebar (6) is capable of oscillating separately from the oscillation of the movable part (3), i.e. the handlebar (6) presents a relative swinging movement with respect to the set of pedals (4) and the seat (5).