Safety tack
OwnerAlbert Cecchiniinventor
Life of this patent
Estimating the term…
Abstract
A safety tack has a pin that is extended from a head of the tack in one state and retracted into the head in another state. The pin retracts and extends into and from the head by using a turning mechanism similar to the mechanism that allows a bolt to turn into and out of a complementary component (e.g. a nut). By having the retracted state, the tack can be handled without injury; and by having the extended configuration, the tack can be used to tack one object to another.
Claims4
A tack comprising a head having a first member and a second member and a pin having a point, where an end of the pin opposite the point is fixed to the first member, the point of the pin extending out of the head and retracting into the head by a turning mechanism, and the turning mechanism being enabled by a thread of the pin complementing a thread of the second member where the second member has a hole extending completely through the second member to an opposite end of the second member, said second member having a perimeter and said opposite end having a substantially flat surface extending to said perimeter, the hole including the thread of the second member and enabling the point of the pin to extend through the second member and out said opposite end and to be retracted into the second member when one of the first member and second member is turned through mating with the thread of the pin, further comprising a mechanical stop that allows the pin to retract fully into the head without the first member and the second member disconnecting.
Dependencies are inferred from the claim text.