| 摘要 |
A convertible writing instrument can be put into either a compact capped configuration, 3 to 4 inches in length, or an extended writing configuration, 5 to 6 inches in length. A relatively elongated cap, which covers most of the relatively shortened pen member in the compact configuration, can be re-attached to the back of the pen, so as to lengthen the instrument in preparation for writing. Multiple interchangeable caps and rear modules can be coupled to the pen member to provide a variety of appearances and functions. |
| 主权项 |
1. A writing apparatus, comprising:
a pen member, comprising a proximal end and a distal end, and further comprising, between the proximal end and the distal end, a substantially tubular or tapered tubular pen barrel, containing a substantially tubular ink reservoir axially disposed within the pen barrel, wherein the ink reservoir fluidly communicates with a substantially conical writing tip at the proximal end of the pen member, and further comprising a first coupling means and a second coupling means proximate to the distal end of the pen member; wherein the pen member further comprises a longer forward stem, having a forward stem length and extending from the proximal end to the first coupling means, and a shorter rear stem, having a rear stem length and extending from the distal end to the second coupling means; multiple interchangeable cap members, each cap member comprising an open proximal end and closed distal end, and further comprising, between the proximal end and the distal end, a substantially tubular or tapered tubular cap body, wherein the cap body has a length that is approximately equal to the forward stem length; wherein the proximal end of each cap member contains a third coupling means, which is configured to removably and conjugately attach alternately to either the first coupling means or the second coupling means of the pen member; wherein each cap member is configured to receive axially within the cap body the entire forward stem of the pen member when the third coupling means is attached to the first coupling means, so that the writing apparatus is put into a compact capped configuration adapted to storage and/or transport; and wherein each cap member is configured to receive axially within the cap body the entire rear stem of the pen member when the third coupling means is attached to the second coupling means, so that the writing apparatus is put into an extended writing configuration adapted to manual manipulation for writing purposes. |
