Rotatable knob controlled adhesive tape dispenser
AssigneeSDI Corporation
InventorChien-Lung Wu
Life of this patent
Estimating the term…
Abstract
An adhesive tape dispenser has a body, an adhesive tap dispensing unit, a knob, a pushing element and a resilient element. The adhesive tape dispensing unit is mounted in the body. The knob is mounted rotatably on the body and has a guiding structure formed obliquely on the knob and having two ends each having a limiting capability to restrict a rotating range of the knob relative to the body between the ends of the guiding structure. The pushing element is mounted slidably in the body, is connected between the knob and the adhesive tape dispensing unit and has a guided structure connected slidably to slide along the guiding structure on the knob when the knob is rotated. The resilient element is mounted in the body to provide a recoil force to the adhesive tape dispensing unit.
Claims18
An adhesive tape dispenser comprising:
- a hollow body having proximal and distal open ends;
- an adhesive tape dispensing unit removable from and slidably mounted within the body to retractably extend a tape dispensing head thereof from the distal open end of said body;
- a detachable housing element having a longitudinal central bore open at both ends and mounted at its proximal end to a rotatable control knob and detachably mounted at its distal end to said proximal open end of said hollow body facing said adhesive tape dispensing unit, said detachable housing element remaining fixed during operation of the dispenser;
- said control knob having a guiding element configured with a cam shaped surface oblique to an axis of said control knob and defined along a distal outer facing edge of said guiding element;
- a pushing element between said control knob and said adhesive tape dispensing unit, said pushing element traversing the central bore of said housing element and having a follower engaging said cam shaped surface, whereby when said control knob is turned in one direction said follower is directed to move toward the adhesive tape dispensing unit and to cause said adhesive tape dispensing head to extend from the distal open end of the body;
- and
- a resilient element mounted in the hollow body to provide a recoil force to the adhesive tape dispensing unit.
An adhesive tape dispenser comprising:
- a body consisting of a front housing having a chamber with front and rear open ends, said front housing chamber enclosing an adhesive tape dispensing unit and a tape dispensing head retractably extendable through the front open end;
- a rear housing having a chamber therein with front and rear open ends and detachably connected at its front open end with the rear open end of said front housing chamber, said rear housing chamber defining a hollow sleeve therein having an open end concentric with the rear open end of said front housing chamber and facing the adhesive tape dispensing unit;
- a knob mounted rotatably on said rear housing chamber and containing an integral guide tube extending concentrically with respect to the rear open end of said rear housing chamber, said guide tube having a distal opening, an edge of the distal opening being configured with a cam shaped guiding surface oblique to the axis of said guide tube, said guiding surface defining two ends each having a limiting capability to restrict a rotating range of the knob relative to the body between the ends of the guiding surface;
- a pushing element mounted for slidable engagement within said guide tube and said hollow sleeve, said pushing element having a guided structure connected slidably to slide along the guiding surface on said guide tube when the knob is rotated, whereby rotation of said knob back and forth moves said pushing element through the distal opening of said guide tube and the open end of said hollow sleeve to engage and cause said adhesive tape dispensing unit to move said tape dispensing head to an extended position and to withdraw to permit said tape dispensing head to return to a retracted position;
- and
- a resilient element mounted in said front housing chamber to provide a recoil force to bias the adhesive tape dispensing unit and tape dispensing head to a retracted position.
Dependencies are inferred from the claim text.