Combination key
OwnerRafael U. Bordainventor
Life of this patent
Estimating the term…
Abstract
A combination key includes a hollow head, a hollow stem connected to the head and a plurality of teeth mounted on racks longitudinally movable in the head and stem. The racks are in meshed engagement with toothed control wheels which are mounted in the head and emerge partially to the outside. The control wheels are located in the head next adjacent the stem. The length of the head is at least equal to the length of the stem so that the racks can be accommodated in the head when the teeth are in a position of maximum retraction.
Claims5
A combination key comprising a hollow head, a hollow stem connected to said head, a plurality of teeth mounted in said stem movable in longitudinal direction thereof, toothed control wheels mounted in said head so as to partially emerge to the outside, transmission means for transmitting the movement of said control wheels to said teeth, so that said teeth can be positioned to achieve the desired combination, said transmission means including racks extending in the longitudinal direction of said stem and longitudinally slidable in said stem and said head, said teeth attached to said racks, said racks being in meshed engagement with said toothed control wheels, guide members for guiding said racks within said stem, wherein said wheels are located in said head next adjacent said stem, and wherein the length of said head is at least equal to the length of said stem, so that said racks can be accommodated in said head when said teeth are in a position of maximum retraction.
A combination key comprising a hollow head, a hollow stem connected to said head, a plurality of teeth mounted in said stem movable in longitudinal direction thereof, toothed control wheels mounted in said head so as to partially emerge to the outside, transmission means for transmitting the movement of said control wheels to said teeth, so that said teeth can be positioned to achieve the desired combination, said transmission means including racks extending in the longitudinal direction of said stem and longitudinally slidable in said stem and said head, said teeth attached to said racks, said racks being in meshed engagement with said toothed control wheels, guide members for guiding said racks within said stem, wherein said wheels are located in said head next adjacent to said stem, and wherein the length of said head is smaller than the length of said stem, said head defining holes in alignment with said racks, so that said racks can be moved through said holes outside of said head when said teeth are in a position of maximum retraction.
Dependencies are inferred from the claim text.