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Patent US4559588A successfully refreshed from Google Patents.
US4559588A
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Penlite and method of assembling the same
Assignee: ENGELSON STEVEN N
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Filing: 1984-01-03
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Granted: 1985-12-17
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Expires: 2004-01-03
Abstract
Abstract A penlite the body of which is made from two reinforced plastic half-bodies which are joined along one common edge by an integral web hinge.
Inventors
- 👤 Steven N. Engelson
- 👤 John McAnallan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:43
CPC Classifications
F; F21; F21L; F21L2/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
71 words
A penlite the body of which is comprised of two semi-cylindrical members of molded plastic material joined along a common edge by a web hinge which is integral therewith, said body being provided on its inner surface with a plurality of ribs adapted to maintain two cylindrical batteries and an incandescent lamp in operative alignment when said semi-cylindrical members are locked together in face-to-face relation to form a cylindrical body member.
Claim 2
Dependent Claim
71 words
A penlite the body of which is comprised of two semi-cylindrical members of molded plastic material joined along a common edge by a web hinge which is integral therewith, said body being provided on its inner surface with a plurality of ribs adapted to maintain two cylindrical batteries and an incandescent lamp in operative alignment when said semi-cylindrical members are locked together in face-to-face relation to form a cylindrical body member.
Claim 3
Dependent Claim
22 words
A penlite as claimed in claim 1, further comprising end caps for containing, and thus joining, the ends of said semi-cylindrical members.
Claim 4
Dependent Claim
37 words
A penlite as claimed in claim 2 in which said end caps are provided with internal channels adapted to receive ears projecting from said semi-cylindrical members and thus to lock said end caps to said semi-cylindrical members.
Claim 5
Dependent Claim
21 words
A penlite as claimed in claim 1, further comprising a pocket clip which is integral with one of said semi-cylindrical members.
Claim 6
Dependent Claim
38 words
A penlite as claimed in claim 4 in which the free end of said pocket clip is arranged to be depressed through an opening defined by said semi-cylindrical members and thus to close the switch of said penlite.
Claim 7
Independent Claim
60 words
The method of assembling a penlite comprising the step of molding two semi-cylindrical halves of the body thereof in side-by-side juxtaposition with an integral web hinge joining them, individually positioning the internal parts of the penlite in one of said semi-cylindrical members, and pivoting the other semi-cylindrical member about said hinge to bring said semi-cylindrical members into mutually confronting juxtaposition.
Claim 8
Independent Claim
60 words
The method of assembling a penlite comprising the step of molding two semi-cylindrical halves of the body thereof in side-by-side juxtaposition with an integral web hinge joining them, individually positioning the internal parts of the penlite in one of said semi-cylindrical members, and pivoting the other semi-cylindrical member about said hinge to bring said semi-cylindrical members into mutually confronting juxtaposition.
Claim 9
Dependent Claim
39 words
The method of assembling a penlite as claimed in claim 6, further comprising the steps of inserting a coil spring into one end of said semi-cylindrical members; and forcing end caps over the opposite ends of said semi-cylindrical members.
References Cited (Backward Citations)
US3359411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-16 | 1989-06-17 | 1989-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-16 | 1993-06-17 | 1993-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-16 | 1997-06-17 | 1997-12-17 | $7700.00 | Window Closed / Lapsed |