Claims
- 1. A side-knock mechanical pencil comprising:
- a generally cylindrical shell extending from approximately the front end of the pencil to the rear end of the pencil;
- a generally elongated slide member disposed within said shell, said slide member being axially movable within said shell, said slide member having a lead passageway extending through it and a slanted portion having a surface that is angled relative to a longitudinal axis of said slide member;
- a chuck member connected to a front end of said slide member and configured and disposed to advance a pencil lead out of the front end of the pencil upon knocking operation;
- a first biasing member disposed within said cylindrical shell to bias an assembly comprising said chuck member and said slide member backward;
- a knock lever disposed within a side of said shell in position to abut said angled surface so that side-knock operation is effected when said knock lever is depressed;
- a retaining sleeve disposed within said cylindrical shell axially behind said slide member, said retaining sleeve axially secured relative to said cylindrical shell;
- a generally cylindrical end cap coaxially disposed within the rear end of the pencil behind said slide member, said end cap having a helical guide groove extending along an inner surface thereof;
- a generally cylindrical guide cylinder coaxially disposed within and extending through said end cap, said guide cylinder having at least one slot extending axially along a side thereof, said end cap being axially fixed relative to said guide cylinder and free to rotate relative to said guide cylinder, a front end of said guide cylinder extending forward and received within the retaining sleeve, the front end of said guide cylinder being secured in releasable fashion within said retaining sleeve; and
- a rod-like-article support member generally coaxially disposed within said guide cylinder with a lug extending through said slot and engaging said helical guide groove;
- whereby rotating said end cap relative to said guide cylinder and within the rear end of said shell causes said rod-like-article support member to advance or retract within said guide cylinder, and said guide cylinder and said end cap can be removed, as a unit, from the rear end of said pencil by pulling the front end of said guide cylinder out of the retaining sleeve, thereby to load pencil lead within said pencil.
- 2. The mechanical pencil of claim 1, wherein the retaining sleeve comprises guide means for receiving and guiding pencil lead into the lead passageway extending through said slide member.
- 3. The mechanical pencil of claim 2, wherein said guide means comprises a funnel-shaped surface formed on the inner periphery of said retaining sleeve at a rearmost end thereof.
- 4. The mechanical pencil of claim 1, further comprising means for preventing rotation of said slide member relative to said cylindrical shell.
- 5. The mechanical pencil of claim 4, wherein said means for preventing rotation of said slide member comprises one or more longitudinally extending ribs on an inner surface of said cylindrical shell and one or more longitudinally extending grooves in said slide member, said grooves engaging said ribs.
- 6. The mechanical pencil of claim 4, wherein said means for preventing rotation of said slide member comprises one or more longitudinally extending ribs on said slide member and one or more longitudinally extending grooves along an inner surface of said cylindrical shell, said grooves engaging said ribs.
- 7. The mechanical pencil of claim 1, wherein said cylindrical shell has a grip portion and said knock lever is located longitudinally behind said grip portion.
- 8. The mechanical pencil of claim 7, further comprising a grip member mounted on said cylindrical shell at said grip portion.
- 9. The mechanical pencil of claim 1, wherein said chuck member includes a coupling member attached to a rear end thereof, and said slide member is connected to said coupling member in a manner to be axially movable relative to said coupling member.
- 10. The mechanical pencil of claim 9, wherein a gap is provided between a rearmost end of said coupling member and an abutting portion of said slide member to allow limited axial movement of said coupling member relative to slide member, said pencil further comprising a second biasing member arranged to bias said coupling member and said slide member axially apart.
- 11. The mechanical pencil of claim 9, wherein said lead passageway and said coupling member are sized to permit a plurality of pencil leads to be disposed therein simultaneously.
- 12. The mechanical pencil of claim 1, wherein said lead passageway is sized to permit a plurality of pencil leads to be disposed therein simultaneously.
Priority Claims (2)
Number |
Date |
Country |
Kind |
5-191293 |
Jul 1994 |
JPX |
|
5-267965 |
Sep 1994 |
JPX |
|
Parent Case Info
This is a divisional of application Ser. No. 08/327,549, filed Oct. 24, 1994 now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (3)
Number |
Date |
Country |
294823 |
Dec 1988 |
EPX |
802797 |
Jan 1951 |
DEX |
10899 |
Jan 1991 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
327549 |
Oct 1994 |
|