Writing instrument with inflatable bladders
A writing instrument with inflatable bladders built into the barrel of the writing instrument to facilitate better and more comfortable gripping of the writing instrument by a user. The built in bladders are inflated by pumping air into them. The writing instrument further includes a release mechanism for releasing excess air in the bladders.
1. Field of the Invention
The present invention relates to a writing instrument with inflatable bladders built into the barrel of the writing instrument to facilitate different sizes for a better and more comfortable gripping by a user. In particular, the present invention relates to a writing instrument where the built in bladders are inflated by pumping air into them. The writing instrument further includes a release mechanism for releasing excess air in the bladders.
2. The Prior Art
U.S. Patent Publication 2004/0136769 to Ferra relates to a cushioning element with a deformable bladder having a filling chamber of a particulate matter that is mounted on an article. The bladder is not however pumped with air.
U.S. Pat. No. 4,035,089 to Schwartz et al. relates a grip whose size is varied with an expander element carried by sleeve upon rotation of the sleeve. The bladder is mechanically increased rather than by pumping air.
SUMMARY OF THE INVENTIONIt is therefore a principle object of the invention to provide a writing instrument having bladders built into the barrel of a writing instrument which can be inflated by pumping air. In one embodiment the bladders can be inflated by clicking do on top of the writing instrument to inflate the bladders while placing one's finger over the top of the writing instrument. In another embodiment the bladders can be pumped themselves. A release button on the side of the writing instrument can be pressed to release excess air from the bladder.
Other objects of the invention will become clear and apparent from the foregoing description and accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Referring now to the drawings of
The clicker and pump handle apparatus 11 can be pressed down by a user's finger to compress the spring 12 and pump air from the air way into the writing instrument's bladders 16 through the one way air valve 18 shown in
In an alternate embodiment of the invention (not shown) the pump handle is separate from the clicker for the writing instrument 10 but otherwise operates in the same fashion described
The bladders 16 can have various confirmations as shown in FIGS. 6A-D showing these different bladder embodiments in their inflated states.
I do not limit myself to any particular details of construction set forth in the specification and illustrated in the accompanying drawings, as the same refers to and sets forth only certain embodiments of the invention, and it is observed that the same may be modified without departing from the spirit and scope of the claimed invention.
Claims
1-7. (canceled)
8. A writing instrument, comprising:
- a barrel; said barrel having bladders built in to said barrel; and
- a pumping mechanism for pumping air into said bladders, said pumping mechanism including an airway passage and a one way air valve for air to enter from said pumping mechanism into said bladders.
9. The writing instrument of claim 8 wherein said pumping mechanism includes an integrated clicker and a pump handle.
10. The writing instrument of claim 8 wherein said pumping mechanism includes a pump handle that is separate from a clicker for said writing instrument.
11. The writing instrument of claim 8 wherein said bladders are formed of rubber-like material.
12. The writing instrument of claim 8 wherein said bladders are formed of rubber material.
13. The writing instrument of claim 8 further comprising a release mechanism located on the side of the writing instrument for releasing excess air.
14. The writing instrument of claim 13 wherein said release mechanism includes a clip that when pressed and held into place against the side of the writing instrument presses a release button at the side of the writing instrument to release said excess air from said bladders.
15. The writing instrument of claim 8 wherein said bladders can be manually pumped by a user pressing and releasing said bladders to inflate said bladders with air.
16. The writing instrument of claim 11 wherein said bladders can be manually pumped by a user pressing and releasing said bladders to inflate said bladders with air.
Type: Application
Filed: Mar 14, 2005
Publication Date: May 17, 2007
Inventor: Stephen Berman (Malibu, CA)
Application Number: 10/563,902
International Classification: A46B 5/02 (20060101);