Guide tube support for rotary impact hammer

A rotary hammer, comprising:

• a housing;
• a guide tube mounted in said housing and extending axially therein;
• a reciprocating member received in said guide tube and adapted to be reciprocated axially therein for transmitting impact energy to a drill bit when removably received in the rotary hammer;
• first mounting means, arranged in said housing, for laterally supporting said guide tube at a first axial location thereon;
• second mounting means, arranged with respect to said housing, for laterally supporting said guide tube at a second axial location thereon;
• seating means, receiving said guide tube in abutment axially thereagainst, for preventing movement of said guide tube in one axial direction;
• and
• resilient means, arranged in said housing, for resiliently urging said guide tube in said one axial direction against said seating means, whereby said guide tube is firmly located in axial position with respect to said first and second mounting means.

A portable power tool, comprising:

• a housing of the power tool;
• an electric motor mounted in said power tool housing;
• a guide tube housing in said power tool housing;
• a guide tube mounted in said guide tube housing and extending axially therein;
• a reciprocating member received in said guide tube and adapted to be reciprocated axially therein relative to said guide tube for transmitting energy to tool means for acting upon a workpiece;
• crank means, adapted to be driven by said motor, for reciprocating said reciprocating member;
• seating means, closing one end of said guide tube housing, for laterally supporting said guide tube at one end thereof and also preventing movement of said guide tube in one axial direction;
• a support wall surrounding said guide tube and laterally supporting said guide tube in said guide tube housing at a location spaced axially from said seating means;
• and
• a spring mounted in said guide tube housing and resiliently urging said guide tube in said one axial direction into abutment with said seating means, whereby said guide tube is firmly positioned axially with respect to said guide tube housing.

A rotary and percussive portable power tool, comprising:

• a housing;
• a guide tube mounted in said housing and extending axially therein;
• a reciprocating member received in said guide tube and adapted to be reciprocated axially therein relative to said guide tube for transmitting energy to tool means for acting upon a workpiece;
• seating means, closing one end of said housing, for laterally supporting said guide tube at one end thereof and also preventing movement of said guide tube in one axial direction;
• said seating means and said guide tube having cooperating abutting portions which prevent said guide tube from rotating;
• a support wall surrounding said guide tube and laterally supporting said guide tube in said housing at a location spaced axially from said seating means;
• and
• a spring mounted in said housing and resiliently urging said guide tube in said one axial direction into abutment with said seating means, whereby said guide tube is firmly positioned axially with respect to said housing.

A portable power tool, comprising:

• a housing;
• a guide tube mounted in said housing and extending axially therein;
• a reciprocating member received in said guide tube and adapted to be reciprocated axially therein relative to said guide tube for transmitting energy to tool means for acting upon a workpiece;
• seating means, closing one end of said housing, for laterally supporting said guide tube at one end thereof and also preventing movement of said guide tube in one axial direction;
• a support wall surrounding said guide tube and laterally supporting said guide tube in said housing at a location spaced axially from said seating means;
• a spring mounted in said housing and resiliently urging said guide tube in said one axial direction into abutment with said seating means, whereby said guide tube is firmly positioned axially with respect to said housing;
• said housing having an end opening whereby said guide tube and said spring can be removably inserted therein;
• and
• said seating means comprises a removable cap mountable over said opening, the inwardly facing portion of said cap being adapted to be an abutment for said one end of said guide tube.

A portable power tool, comprising:

• a housing;
• a guide tube mounted in said housing, said housing being in surrounding spaced relationship to said guide tube;
• a reciprocating member received in said guide tube and adapted to be reciprocated axially therein relative to said guide tube for transmitting energy to a tool member;
• a cap removably attached to said housing and having a socket formed therein, one end of said guide tube being positioned in said socket;
• a support plate in said housing and through which said guide tube is mounted;
• and
• a spring partially encircling said guide tube and having an end that reacts against said support plate, the other end thereof reacting with said guide tube thereby resiliently urging said guide tube against said cap and into said socket.