Caulk dispensing device with thumb-control lock
OwnerPeter J. Y. Changinventor
Life of this patent
Estimating the term…
Abstract
A caulk dispensing gun having a rotatable barrel and a barrel rotation lock which allows smooth and unencumbered 360.degree. bi-directional rotation, and convenient locking at any angular position during rotation of the barrel. The caulk dispensing gun also has a piston assembly which is especially suited for use in a rotatable barrel.
Claims15
An improvement in a caulk dispensing device having a housing with a downwardly extending handle, a trigger pivoted to said housing and compressible against said handle, a barrel extending from said housing, said barrel being rotatable with respect to said housing for convenient angular caulking, and a piston and rod assembly driven through said barrel by said trigger for dispensing a compound, the improvement comprising;
- an on/off thumb control lock for controlling rotation of said barrel, said thumb control lock further comprising,
- a rotatable collar in which said barrel is seated;
- gripping means compressible against said collar for preventing rotation of said collar and barrel,
- a thumb-switch for selectively compressing said gripping means against said collar, said thumb-switch being mounted proximate to said handle for allowing thumb-control of barrel rotation during operation of said trigger.
An improvement in a caulk dispensing device having a housing with a downwardly extending handle, a trigger pivoted to said housing and compressible with said handle, a barrel extending from said housing, and a piston rod driven through said barrel by said trigger for dispensing caulk material, the improvement comprising;
- a piston assembly mounted on an end of said piston rod for forcing caulk material from said barrel, said piston assembly having a unitary circular plunger mounted on said end of said piston rod, an ejector cone for depleting said barrel of caulking material, and a screw threaded into said piston rod through said ejector cone and plunger, respectively, for securing said ejector cone and plunger to said piston rod.
A caulk dispensing device, comprising:
- a housing with a downwardly extending handle;
- a trigger pivoted to said housing and compressible with said handle;
- a barrel extending from said housing, said barrel being rotatable with respect to said housing for convenient angular caulking;
- a piston rod driven through said barrel by said trigger for dispensing caulk material;
- a piston assembly mounted on an end of said piston rod for forcing caulk material through said barrel, said piston assembly having a unitary circular plunger;
- and
- an on/off thumb control lock for controlling rotation of said barrel, said thumb control lock further comprising,
- a rotatable collar in which said barrel is seated;
- gripping means coupled to said housing and compressible against said collar for preventing rotation of said collar and barrel,
- a thumb-switch for selectively compressing said gripping means against said collar, said thumb-switch being mounted proximate said handle for allowing selection by thumb during caulking.
Dependencies are inferred from the claim text.