Advance causing or controlling means
Driven flexible member causes advance
Motor causes or controls advance
Advance means includes relatively movable transmission element
Advance motor control in tool drive manipulating handle
Advance motor exhaust is motive fluid for drive motor
Common control element for advance and drive motors
With relatively movable advance motor control element
Common energy supply for advance and drive motors
Drive motor exhaust is motive fluid for advance motor
Drive motor generates advance motor motive energy
With lock or brake operable during advance
Operated solely by vibrations from reciprocating element in tool drive
Intermittent unidirectional rotation of advance element
Reciprocatory drive and advance originate from same mechanical element
Rotary drive and advance originate from same mechanical element
Friction clutch or torque yielding couple in connecting train
Tool advances relative to drive
Advance means engageable with tool shaft at any point
Advance motor working member coaxial with tool shaft
Cable means controls advance
Automatic control of power operated means
Drive means responsive to condition of advance causing or controlling means
Drive means responsive to torque or speed condition
Fluid pressure change controls drive
Having torque responsive clutch
Having torque sensor
Proximity angle detector
Strain gauge
With speed responsive governor
With torque indicator
Responsive to condition of cleansing means
Tool advance causing or controlling means
Responsive to length of stroke of means reciprocating hammer head or tool
Responsive to torque or speed condition of drive
Drive motor motivating energy condition initiates control
Motive fluid flow or pressure condition of drive motor
Fluid flow or pressure operated advance means
With additional control by means sensing condition of advance means
Combined
Convertible
Drive adjustable to completely change kind of drive
Adjustable to impacting device
Drive by means reacting to rotating eccentric mass
Drive control operable by hand engaging manipulating handle
Drive controlled by relative axial movement of tool
Drive motor controlled
Modified internal motor operation
Motor piston movement modified relative to motive fluid port
Reciprocating drive member connected to pulsing fluid column
Drive controlled by relative movement of advance causing or controlling means or manipulating handle
Drive gearing advances relative to source or power
Hammer or tool shaft reciprocated by gripping means which release or yield to permit advance
Means concurrently moving shaft about an axis
With fixed means cyclically contacted by grip structure
Contact moves grips out of shaft engagement
Impacting devices (e.g., hammers)
Hammer head comprises plural parts or diverse materials
Piston of drive motor
Hammer head constitutes or fixed to drive motor cylinder
Hammer head constitutes piston of drive motor
Driven by internal combustion engine
Having valve not directly associated with motive fluid for piston
With accumulator
Motive fluid applied to striking face
Reduced area striking face
Supplied through passage in striking face
With means to conduct motive fluid to or from striking face
Hammer head driven by electric motor
Hammer head driven by pulsating fluid pressure
Pulsation caused by mechanical movement
Hammer head driven by relatively moving motion transmitting element
Cyclically disconnected from motion transmitting element
Rotary cam
Hammer head driven by spring
Fluid spring
Having cam to compress spring
Spring retracts hammer head
With means to adjust spring force
Hammer head moves in arcuate path or rotates
Hammer head movement is oscillatory
Hammer head moves out of arcuate or rotary path
Movement out of path is about rotating pivot
Hammer head reciprocates along fixed transverse axis
Arcuate or rotary movement selectively releasable or variable independent of reciprocation
Arcuate or rotary movement transmitted to tool
Impact transmitting anvil
Adapted to fit tool noncircular in cross section
Anvil retained for limited movement
Attachable at plurality of points along tool
Formed of plural transmitting part or separate layers
With means to directly connect anvil to tool
Length of cyclic travel of hammer head selectively adjustable
Plural relatively moved hammer heads
Concentric
One impacts another
Selective axial direction of impact
Spring bodily cyclically moved with hammer head
With anvil arranged to transmit torsional impact to tool
Rotary tool drive having torque responsive impact
Hammer head reciprocates along rotary axis
Torque transmitted from hammer head traveling axially only
With impact cushioning means
Mechanical spring
With means for rotating tool
Rotated by hammer head or drive for hammer head
Rotation is intermittent or oscillatory
Rotary drive path is directly through hammer head
Rotated by separate motor
Motive fluid supplied to rotation motor is hammer motor exhaust
Reciprocating type separate motor
Rotation motor exhaust is motive fluid for hammer motor
With means to cause or control advance of hammer head
Advance operated by hammer drive or actuated in response to hammer vibration
With means to grip and release tool in timed relation to impact
With means to reciprocate tool
Including means to vibrationally isolate a drive means from its holder
Handle type holder
Liquid operated
Lubrication
Means to control advance and cyclically reciprocate a cable-operated hammer or tool
Advance means bodily reciprocated
Hammer or tool cyclically disconnected from cable
Relatively elevated guide engaging cable between drive and hammer or tool
Drive is oscillating cable drum
Drive is oscillating cable engaging means
Drive permits hammer or tool to freely drop
With means to synchronize advance with reciprocating drive
With plural cable drums
Means to drive tool about an axis
Electric motor
Endless flexible drive means
Fluid motor
Having sound attenuator
Plural motors
With manual means to control motor
With means to rotate reciprocating piston
Gear drive
Means to hold and relatively rotate sections of tool shaft
Plural tools
Relatively fixed drive for an advancing tool
With advance stopping means adapted to grip tool shaft at any point
With advance stopping means having selectively operable actuating mechanism
Miscellaneous
Operable submerged in liquid
Passage in manipulating handle for drive motor motive fluid
Motive fluid control valve in handle passage
Power paths to plural tools from single drive
Drive plural means to reciprocate hammer heads or tools
Processes
Self-acting advance and retraction cycle
Single advance causing or controlling means or manipulating for plural drives
Sound muffling
Swinging arm causes advance with means to guide rectilinear tool advance
With indicating or signaling means
Distance of advance
With means engaged by part of human other than hand
With means to adjust position of axis of tool advance
Adjustment powered by motor or mechanism
Drive gearing displaced relative to source of power
With plural relatively displaced gearing sections
Plural adjustments
Powered by motor or mechanism
Having flexible endless member
Having fluid motor
With mechanical movement
With flexible endless member
Having screw threads
Having turntable
With means to space axis of tool advance relative to prior position
With vehicle support for drive
Drive structure moved to nonuse position for transport
Movement of vehicle causes tool advance
Nontransporting means to support vehicle during tool operation
Adjustable nontransporting means
Having fluid cylinder
Pivoted
Vehicle motor and drive motor powered by same energy source
Vehicle motor mechanically coupled to drive tool
With work engaging means supporting drive
Anchored to work
Balanced with respect to axis of tool advance
Relatively adjustable work engaging elements
Structure engages work at point diametrically opposed to tool
Structure extends between opposed points
Tool advanced laterally of structure
Work cleansing
By motive fluid for drive motor or advance causing or controlling motor
Additional cleansing fluid source
Motive fluid for cleansing bypasses motor chamber
With means providing for independent use of either fluid
Directed into passage in tool
Fluid supplied through chamber of advance causing or controlling motor
Fluid supplied through working chamber of idled cyclically operable drive motor
Supplied through distributor maintained in fixed position
Mechanically maintained in fixed position
Motor exhaust throttled
Motor inlet throttle valve maintains distributor fixed
Motive fluid does not contact work but induces flow of another fluid
Supply for cleansing bypasses motor chamber
Controlled by motor inlet throttle valve
With means to inhibit return of detritus into cleansing passage
Cleansing fluid controlled by control for drive or advance causing or controlling means
Cleansing fluid passage in impact transmitting anvil
Cleansing fluid passage through hammer head
Cleansing fluid pump operated by drive
Pump comprises hammer head or impact transmitting anvil
Controlled by relative movement between drive and tool, advance causing or controlling means or manipulating means
Drive motor or advance causing or controlling motor provided with passage for cleansing fluid
Having outside conduit to supply cleansing fluid
Plural cleansing fluid sources
Using vacuum or reverse circulation
