US3733139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual writing instrument
Assignee: Individual
•
Filing: 1971-11-05
•
Granted: 1973-05-15
•
Expires: 1991-11-05
Abstract
Abstract There is herein disclosed a dual-purpose writing device having a main, central body with opened ends therein, adapted to removably receive end bodies, one of the end bodies being provided with a bore in which is disposed a retractable ink cartridge, the second end body being provided with a cavity adapted to become a chamber for storing of writing fluid when a felt writing tip is disposed within the opened end thereof. The device is also provided with a cap member designed to fit as a cover over either end body.
Inventors
- 👤 J G Neidhardt
- 👤 J D Neidhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:40
CPC Classifications
B; B43; B43K; B43K27/00; B43K27/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
240 words
A dual-purpose writing instrument comprising: a main, central body having threaded, open ends and a bore disposed intermediate said ends, one end of said bore communicating with one of said open ends; a first end-body member adapted to be received in the open end communicating with said bore, said body member having a longitudinal bore therein, said longitudinal bore having an open end communicating with said bore of said main body, the free end of said body member being provided with an aperture communicating with said longitudinal bore, the opposite end thereof being provided with a threaded neck portion, whereby said first end body is removably secured to said main body; an ink cartridge disposed within said longitudinal bore of said first end body; a biasing means disposed within said longitudinal bore, whereby said cartridge is biased inwardly from said free end of said body; means for positioning said cartridge in an operating and nonoperating mode, said means disposed within said main, central body; a second end-body member having a cavity therein, the open end of said cavity being adjacent the free end of said body member, the opposite end thereof being provided with a threaded neck portion, whereby said second end body is removably secured to said main body; a writing fluid disposed within said cavity of said second endbody member; and a felt pen tip secured within said opening in said free end of said second end body.
Claim 2
Dependent Claim
240 words
A dual-purpose writing instrument comprising: a main, central body having threaded, open ends and a bore disposed intermediate said ends, one end of said bore communicating with one of said open ends; a first end-body member adapted to be received in the open end communicating with said bore, said body member having a longitudinal bore therein, said longitudinal bore having an open end communicating with said bore of said main body, the free end of said body member being provided with an aperture communicating with said longitudinal bore, the opposite end thereof being provided with a threaded neck portion, whereby said first end body is removably secured to said main body; an ink cartridge disposed within said longitudinal bore of said first end body; a biasing means disposed within said longitudinal bore, whereby said cartridge is biased inwardly from said free end of said body; means for positioning said cartridge in an operating and nonoperating mode, said means disposed within said main, central body; a second end-body member having a cavity therein, the open end of said cavity being adjacent the free end of said body member, the opposite end thereof being provided with a threaded neck portion, whereby said second end body is removably secured to said main body; a writing fluid disposed within said cavity of said second endbody member; and a felt pen tip secured within said opening in said free end of said second end body.
Claim 3
Dependent Claim
69 words
A dual-purpose writing instrument as recited in claim 1, wherein means for positioning said cartridge comprises: a lug slidably disposed within said bore of said central, main body; an adjusting pin attached to said lug; and a slot having a hooked end located within the wall of said central body, whereby said pin projects therethrough for manual adjustment of said cartridge in either an operating or a non-operating position.
Claim 4
Dependent Claim
47 words
A dual-purposE writing instrument as recited in claim 2, wherein said felt pen tip comprises: a plug member inserted within said free-end opening of said second end body, and having a passage therethrough; and a felt tip received and secured within said passage of said plug member.
Claim 5
Dependent Claim
22 words
A dual-purpose writing instrument as recited in claim 3, wherein said slot in said central body is formed in a ''''J'''' configuration.
Claim 6
Dependent Claim
35 words
A dual-purpose writing instrument as recited in claim 4, wherein said first and second end body members are identical in configuration, said instrument including a cap cover adapted to be positioned on either end-body member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |