Abstract

A power tool (10) having an operational axis (12). The power tool (10) comprises a tool carrier (100) for mounting an impact tool (102), the tool carrier (100) comprising a base member (104) aligned with the operational axis (12), and operable to move along the operational axis (12) in a first direction (D1) to an extended position; and operable to move along the operational axis (12) in a second direction (D2) towards a tool carrier retracted position to receive impact energy. The base member (104) has : a head end (110) for receiving the impact energy from the second direction along the operational axis (12); a foot end (112) at an opposite end of the tool carrier (100) to the head end (110), the foot end (112) being provided with a tool mount (114) configured to hold a tool (102). A first damper (200) is provided to decelerate the tool carrier (100) in the first direction (D1) along the operational axis (12) to bring it to a stop in the tool carrier extended position; and a second damper (300) provided to decelerate the tool carrier (100) in the second direction (D2) along the operational axis (12) to bring it to a stop at the tool carrier retracted position.

IPC Classes  ?

• B25D 17/24 - Damping the reaction force
• B25D 9/02 - Portable percussive tools with fluid-pressure drive, e.g. having several percussive tool bits operated simultaneously of the tool-carrier piston type, i.e. in which the tool is connected to an impulse member

Abstract

A power tool (10) having an operational axis (12). The power tool (10) comprises: a tool carrier (100) for mounting an impact tool (102), the tool carrier (100) having a head end (110) and a foot end (112) at an opposite end of the tool carrier (100) to the head end (110). A body (700) is constrained to move along the operational axis (12) from an impact position at which the body (700) is operable to transfer impact energy to the head end (110) of the tool carrier (100) to a body retracted position spaced apart from the impact position along the operational axis (12). There is also provided a housing assembly (600) which defines a cavity (602) in which the body (700) and tool carrier (100) are located. There is also provided an elastic rope (1000), a first end (1002) of the elastic rope (1000) being coupled to the body (700), and a second end (1004) of each of the elastic rope (1000) being coupled to the housing assembly (600) via an anchor system (900). The tension in the elastic rope (1000) has a first value (T1) when the body is in the body retracted position and having a second value (T2) with the body (700) is in the impact position. The anchor system (900) is operable to alter the position of the second end (1004) of the rope (1000) relative to the first end (1002) in a direction along the operational axis (12) to thereby adjust the first tension value (T1) at the body retracted position and thereby adjust the second tension value (T2) at the impact position.

IPC Classes  ?

• B25D 9/06 - Means for driving the impulse member
• B25D 9/02 - Portable percussive tools with fluid-pressure drive, e.g. having several percussive tool bits operated simultaneously of the tool-carrier piston type, i.e. in which the tool is connected to an impulse member

Abstract

A power tool (10) having an operational axis (12). The power tool (10) comprises a tool carrier (100) for mounting an impact tool (102), the tool carrier (100) having a head end (110) and a foot end (112) at an opposite end of the tool carrier (100) to the head end (110). There is also provided a body (700) constrained to move along the operational axis (12) from an impact position at which the body (700) is operable to transfer impact energy to the head end (110) of the tool carrier (100) to a body retracted position spaced apart from the impact position along the operational axis (12). There is also provided a monitoring system (1100) configured to determine the blow energy of the body (700), wherein the blow energy is the energy transferred from the body (700) to the head end (110) of the tool carrier (100).

IPC Classes  ?

• B25D 9/02 - Portable percussive tools with fluid-pressure drive, e.g. having several percussive tool bits operated simultaneously of the tool-carrier piston type, i.e. in which the tool is connected to an impulse member
• B25D 9/26 - Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
• B25D 11/00 - Portable percussive tools with electromotor drive

Abstract

A power tool is provided that includes a tool carrier for mounting an impact tool. The tool carrier has a base member aligned with an operational axis. The base member has a head end for receiving impact energy, a foot end provided with a tool mount configured to transmit the impact energy to the impact tool, and a casing engagement feature between the head end and foot end. A first casing module is provided with a tool carrier engagement feature complementary in shape to, and for interlocking engagement with, the tool carrier casing engagement feature to prevent rotation of the tool carrier relative to the first casing module around the operational axis, and permits relative movement between the tool carrier and the first casing module along the operational axis.

IPC Classes  ?

• B25D 17/06 - Hammer pistonsAnvils
• B25D 17/24 - Damping the reaction force

Abstract

A power tool including an impact tool, a body and an actuator. The actuator is operable to move the body along an operational axis from an impact position, at which the body is operable to transfer impact energy to a head end of the impact tool, to a retracted position spaced apart from the impact position along the operational axis.

IPC Classes  ?

• B25D 9/12 - Means for driving the impulse member comprising a built-in liquid motor
• B25D 17/24 - Damping the reaction force
• B25D 9/06 - Means for driving the impulse member

Abstract

A power tool (30) comprising an impact tool (42), a body (70) and an actuator (46). The actuator (46) is operable to move the body (70) along an operational axis (38) from an impact position,at which the body (70) is operable to transfer impact energy to ahead end (60) of the impact tool (42), to a retracted position spaced apart from the impact position along the operational axis (38).

IPC Classes  ?

• E01C 23/12 - Devices or arrangements for working the finished surfaceDevices for repairing the surface of damaged paving for taking-up, tearing-up, or breaking-up paving
• B25D 11/10 - Means for driving the impulse member comprising a cam mechanism
• B25D 9/06 - Means for driving the impulse member

Abstract

A power tool (30) comprising a tool carrier (34) for mounting an impact tool (36). The tool carrier has a base member (38) aligned with an operational axis. The base member has a head end (40) for receiving impact energy, a foot end (42) at an opposite end of the tool carrier, the foot end being provided with a tool mount (44) configured to transmit the impact energy to the impact tool, and a casing engagement feature (46) provided between the head end and foot end. There is also provided a first casing module (50), at least part of the tool carrier being located within the first casing module. The casing module is provided with a tool carrier engagement feature (52) complementary in shape to, and for interlocking engagement with, the tool carrier casing engagement feature. This prevents rotation of the tool carrier relative to the first casing module around the operational axis, and permits relative movement between the tool carrier and the first casing module along the operational axis.

IPC Classes  ?

• B25D 17/06 - Hammer pistonsAnvils
• B25D 17/24 - Damping the reaction force
• E02D 7/10 - Power-driven drivers with pressure-operated hammer
• B25D 17/00 - Details of, or accessories for, portable power-driven percussive tools