Caulking gun adapter for electric hand drill

Claim 2

A caulking gun attachment for an electric hand drill including in combination securing means for fastening said gun to the body of said drill, a receptacle fastened to said securing means for receiving therein a caulking cartridge having a caulking dispensing nozzle thereon, a threaded piston movable when driven through said cartridge to force the caulking within said cartridge from said nozzle, driving means for said piston including a threaded nut disposed about the threaded surface of said piston and operative when rotated to drive said piston through said cartridge, a speed reducing drive train disposed for connecting said drill with said nut and operative when activated by operation of said drill to effect rotation of said nut, fixed means engaging said piston and operative upon rotation of said nut by said drill to prevent rotation of said piston with said nut and clutch means interposed in said speed reducing drive train between said drill and said nut and operative to interrupt rotation of said nut upon a predetermined arrested movement of said piston during operation of said drill.

Claim 3

A caulking gun attachment for an electric hand drill including in combination securing means for fastening said gun to the body of said drill, a receptacle fastened to said securing means for receiving therein a caulking cartridge having a caulking dispensing nozzle thereon, a threaded piston movable when driven through said cartridge to force the caulking from said cartridge by way of said nozzle, driving means for said piston including a threaded segmented nut, clamping means for releasably clamping the segments of said nut about the threaded surface of said piston with said nut being operative when clamped about the threaded surface of said piston and rotated, to effect movement of said piston through said cartridge, a speed reducing drive train disposed for connecting said drill with said nut and operative when activated by operation of said drill to effect rotation of said nut, fixed means engaging said piston and operative upon rotation of said nut by said drill to prevent rotation of said piston with said nut and clutch means interposed in said speed reducing drive train between said drill and nut and operative upon a predetermined arrested pressure upon said piston during operation of said drill to drivably disengage said drill from said nut.

Claim 4

A caulking gun attachment for an electric hand drill including in combination securing means for fastening said gun to the body of said drill, a receptacle fastened to said securing means for receiving therein a caulking cartridge having a caulking dispensing nozzle thereon, a threaded piston movable when driven through said cartridge to force the caulking from said cartridge by way of said nozzle, driving means for said piston including a threaded segmented nut, clamping means for releasably clamping the segments of said nut about the threaded surface of said piston with said nut being operative when clamped about the threaded surface of said piston and rotated, to effect movement of said piston through said cartridge, a speed reducing drive train disposed for connecting said drill with said nut and operative when activated by operation of said drill to effect rotation of said nut, fixed means engaging said piston and operative upon rotation of said nut by said drill to prevent rotation of said piston with said nut and clutch means interposed in said speed reducing drive train between said drill and nut and operative upon a predetermined arrested pressure upon said piston during operation of said drill to drivably disengage said drill from said nut.

Claim 5

A caulking gun as claimed in claim 2 wherein said clutching means include manual adjustment means for varying selectively the drill disengaging point of said driving train clutch.

Claim 6

A caulking gun as claimed in claim 2 wherein said segmented nut is conical-like in configuration and clamped about said piston by being driven by said clamping means into a similarly conical-like configurated recess included as a part of said driving train.

Claim 7

A caulking gun as claimed in claim 4 wherein the reduced end of said conical-like configurated nut is pointed in the direction the piston is driven by said driving train when forcing caulking from said receptacle.

Claim 8

A caulking gun as claimed in claim 4 wherein upon release of said clamping means for said conical-like configurated nut, the nut is free to be manually withdrawn by said piston from its clamped position within the said conical-like configurated recess.

Claim 9

A caulking gun as claimed in claim 4 wherein between said conical-like configurated nut and said conical-like configurated recess are disposed interlocking drive communicating surfaces.

Claim 10

A caulking gun as claimed in claim 2 wherein said segmented nut is comprised of at least three segments.

Claim 11

A caulking gun attachment for an electric hand drill including in combination, fastening means for securing said gun to the body of the drill, a receptacle secured to said fastening means for receiving therein a caulking cartridge having a caulking dispensing nozzle thereon, a threaded piston movable when driven through said cartridge to force caulking within said cartridge from said nozzle, drive means for said piston including a drive train to be driven by said drill, a tapered segmented nut threadedly engaging the threads of said piston with the decreasing tapered end of said nut directed toward the caulk driving end of said piston, a conical recess forming a part of said driving train and disposed about said tapered nut, drive communicating surfaces disposed between said tapered nut and said conical recess, clamping means for forcing said tapered nut in the driven direction of said piston and into said conical recess to effect driving communication between said nut and said driving train by means of said drive communicating surfaces, means for separating said clamping means from said nut to permit manual withdrawal of said nut from said conical recess and separation of said nut segments from the threads of said piston for manual withdrawal of said piston from said recepticle and clutch means interposed in said driving train and operable upon a predetermined arrested movement of said piston during operation of said drill to drivably disengage said drill from said nut.

Claim 12

A caulking gun attachment for an electric hand drill including in combination, fastening means for securing said gun to the body of the drill, a receptacle secured to said fastening means for receiving therein a caulking cartridge having a caulking dispensing nozzle thereon, a threaded piston movable when driven through said cartridge to force caulking within said cartridge from said nozzle, drive means for said piston including a drive train to be driven by said drill, a tapered segmented nut threadedly engaging the threads of said piston with the decreasing tapered end of said nut directed toward the caulk driving end of said piston, a conical recess forming a part of said driving train and disposed about said tapered nut, drive communicating surfaces disposed between said tapered nut and said conical recess, clamping means for forcing said tapered nut in the driven direction of said piston and into said conical recess to effect driving communication between said nut and said driving train by means of said drive communicating surfaces, means for separating said clamping means from said nut to permit manual withdrawal of said nut from said conical recess and separation of said nut segments from the threads of said piston for manual withdrawal of said piston from said recepticle and clutch means interposed in said driving train and operable upon a predetermined arrested movement of said piston during operation of said drill to drivably disengage said drill from said nut.