US 5,350,101 A · Device for advancing a rotatable tube

Abstract

A stock feeder has a housing for supporting both the stock and an advancer which coaxially extends through the housing and is formed as a collet which, when clamped, grips the stock and holds the advancer in a fixed relationship with the stock. At the extreme distal end of the advancer the collet is formed with a radially extending lip, and proximal to the collet the advancer is formed with a radially extending ring. A chuck which is formed with a radial groove slidingly surrounds the collet and is movable relative to the advancer. Specifically, the chuck can be moved on the collet between a first position wherein the chuck clamps the collet onto the stock and a second position wherein the collet is released to allow a sliding movement of the stock through the advancer. In either collet configuration, the stock may be rotated. An actuator is engaged with the groove on the chuck and is manipulable to move the chuck between the first and second positions. An abutment formed with a hole for receiving the tube therethrough is held at a distance distal or forward from the housing by an extension arm which interconnects the housing and the abutment. Additionally, a cylindrical-shaped spacer is positioned around the stock between the chuck and the abutment.

Claims11

Dependent claims

A device for advancing an elongated piece of stock, which comprises:

a housing;
a collet for radially surrounding a portion of said stock, said collet being movable between a first configuration wherein said collet grips said stock for translation with said stock, and a second configuration wherein said collet releases said stock for independent movement of said collet relative to said stock;
a chuck slidingly surrounding said collet and movable relative thereto between a first position and a second position for respectively moving said collet into said first and second configurations, said chuck being formed with a radial groove;
an actuator having a projection formed perpendicularly thereon for engaging said groove of said chuck;
an elongated advancer having first and second ends, wherein said collet is formed as said first end of said advancer, said second end of said advancer being slidably attached to said housing and said advancer being formed with a ring extending radially outward from said advancer intermediate said first and second ends, said stock slidably and rotatably extending coaxially through said advancer and said housing;
first means attached to said device for limiting the advancing translation of said collet to cause said chuck to move into said second position;
and
second means distanced from said first means and attached to said device for limiting independent movement of said collet to move said chuck into said first position.

5 more elements

A device for advancing stock which comprises:

first means for slidably supporting said stock at a first location on said stock;
second means for slidably supporting said stock at a second location on said stock, said second means being fixedly connected with said first means;
a collet radially disposed around a portion of said stock between said first and second supporting means, said collet being transformable between a first configuration wherein said collet grips said stock and a second configuration wherein said collet releases said stock;
a chuck having a radial groove formed thereon, said chuck slidingly surrounding said collet for movement between a first position and second position for transforming said collet into said first and second configurations;
and
an elongated actuator having a protection formed perpendicularly thereon for engaging said groove of said chuck for translating said chuck for selectively contacting said first and second supporting means, to transform said collect into said second and first configurations, respectively.

3 more elements

Dependencies are inferred from the claim text.

Device for advancing a rotatable tube

Life of this patent

Device for advancing a rotatable tube

Life of this patent

Abstract

Claims11