|Publication number||USRE30346 E|
|Application number||US 06/042,069|
|Publication date||Jul 22, 1980|
|Filing date||May 24, 1979|
|Priority date||Sep 27, 1976|
|Publication number||042069, 06042069, US RE30346 E, US RE30346E, US-E-RE30346, USRE30346 E, USRE30346E|
|Inventors||Michael C. Klaber|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (2), Classifications (8)|
|External Links: USPTO, USPTO Assignment, Espacenet|
.Iadd.This is an application for reissue of U.S. Pat. No. 4,081,217 issued Mar. 28, 1978. .Iaddend.
The present invention relates to a foldable pens or like writing instruments.
Foldable pens are known in the prior art, but none of these were designed to form a carrying loop from the members comprising the pen when the pen is folded to the closed .[.position.]. .Iadd.positions.Iaddend.. Some of these prior art devices are disclosed in U.S. Pat. Nos. 1,561,262; 2,896,576; 3,257,991 and 3,407,021.
It is the principal object of this invention to provide a foldable pen that may be latched in an opened or closed position and, when closed, form a loop for carrying on a key ring or the like.
These and other objects are achieved by the preferred embodiment of the present invention which comprises two pivotally connected elongated members. A detent prong formed in the end of one member snaps into an aligned aperture in the other member to hold the pen open for writing. A manually releasable latch holds the pen in the closed position. When closed, the nib positioned at the free end of one member, is covered by a resilient member projecting from a free end of the other member to form a continuous loop for carrying.
Having in mind the above and other objects that will be obvious from an understanding of the disclosure, the present invention comprises a combination and arrangement of parts illustrated in the presently preferred embodiments of the invention which are hereinafter set forth in sufficient detail to enable those persons skilled in the art to clearly understand the function, operation, construction and advantages of it when read in conjunction with the accompanying drawing.
The invention will be described, by way of example, with reference to the accompanying drawing, in which:
FIG. 1 is a frontal view of the preferred embodiment utilizing the principles of the present invention and shown in the closed position;
FIG. 2 is a frontal view of the pen shown in an opened position; and
FIG. 3 is a sectional view taken along line 3--3 in FIG. 1.
Referring to FIGS. 1 and 2 of the drawing and in accordance with the principles of the invention, a foldable pen 10 is shown. The pen 10, made of plastic or steel, comprises a first elongated member 12 having a writing nib 14 extending from one end 16 thereof and a second elongated member 18 connected at one end 20 to the other end 22 of the first member with a pivot pin 24. The pivot pin 24 is positioned at corresponding the peripheral edges 26, 28 of the first and second members 12, 18, respectively.
Projecting from a second peripheral edge 30 of the second member 18 opposite the first edge 28 is an integral detenting prong 32 that will detent into an aperture 34 located in the first member 12 at a corresponding peripheral edge 36. The engagement of the prong 32 into the aperture 34 maintains the pen 10 in an opened writing position. Manual folding pressure can snap the prong 32 from the aperture 34 when closing the pen 10.
To maintain the pen 10 in the closed position, a latching member 36 comprising a hooking portion 38 and an integral plunger portion 40 disposed at right angles to each other is employed. The latching member 36 is located within a hollow portion 42 of the second member. The hooking portion 38 projects outwardly through a first aperture 44 and the plunger portion 40 projects outwardly through a second aperture 46 disposed at 90° with respect to the first aperture 44. Both apertures 44, 46, open into the hollow portion 42. A biasing spring 48 outwardly biases the plunger 40.
The first member 12 also has a hollow portion 50 located therein and an aperture 52 opens into the hollow portion 50 and is aligned with the hooking portion 38. When closing the pen 10, the hooking portion 38 enters the aperture 52 and hooks to an edge thereof. The direction of the force exerted by the biasing spring 48 urges the tapered tab 54 of the hooking portion over the wall 56 of the first member 12 to maintain the pen 10 in the closed position. By manual depression of the plunger 40, the tab 54 is released from the edge of the aperture 52 and the pen 10 may be opened.
Extending from the other end 58 of the second member 18 is and integral therewith a curved resilient member 60. The free end 62 of this member 60 has a depression 64 formed therein receptive of the nib 14 of the pen 10. The nib 14 engages the depression 64 by a detenting action to form a loop comprised of the elongated members 12, 18 and the resilient member 60. The opening 66 formed is receptive of a key ring 68 or the like.
While preferred and other exemplary embodiments of the invention are illustrated, it will be understood that the invention is in no way limited to these embodiments.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2456904 *||Aug 4, 1945||Dec 21, 1948||Harald Wahlstrom Nils||Stamp|
|US2896576 *||Nov 1, 1956||Jul 28, 1959||Imp Knife Ass Co||Combination pocket knife and pen|
|US3257991 *||Oct 26, 1964||Jun 28, 1966||Alfred Mosch||Pocket utility and writing device|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US6536973||Jul 10, 2001||Mar 25, 2003||Bic Corporation||Writing instrument|
|US6746168||Jan 27, 2003||Jun 8, 2004||Bic Corporation||Writing instrument|
|U.S. Classification||401/131, 401/195|
|International Classification||B43K23/00, B43K29/00|
|Cooperative Classification||B43K23/00, B43K29/00|
|European Classification||B43K29/00, B43K23/00|