US4435713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Whip antenna construction
Assignee: Motorola Solutions Inc
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Filing: 1981-11-20
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Granted: 1984-03-06
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Expires: 2001-11-20
Abstract
Abstract A whip antenna assembly of conductive cable, conductive base section, conductive protection knob and a environmental cover. The conductive antenna cable is constructed of multiple layers of brass plated stainless steel wire wound in a helix about a single wire strand which serves as a central core. The conductive base section and conductive protection knob consist of a zinc alloy and are injection cast onto opposite ends of the conductive antenna cable. An environmental cover made from polyurethane is injection molded over the subassembly of conductive antenna cable, conductive base section and conductive protection knob.
Inventors
- 👤 Bernard Gasparaitis
- 👤 Thomas W. Long, Jr.
- 👤 Charles P. Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:40
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q9/00; H01Q9/04; H01Q9/30
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
79 words
A whip antenna assembly for attachment to a receptacle in a communications device comprising: a highly flexible conductive antenna cable having a first and second end, a conductive metal base section injection cast onto said antenna cable first end, a knob injection cast onto said cable second end, and an environmental cover injection molded over said antenna cable and base section to provide protection and support for said whip antenna assembly without substantially reducing the flexibility of said assembly.
Claim 2
Dependent Claim
79 words
A whip antenna assembly for attachment to a receptacle in a communications device comprising: a highly flexible conductive antenna cable having a first and second end, a conductive metal base section injection cast onto said antenna cable first end, a knob injection cast onto said cable second end, and an environmental cover injection molded over said antenna cable and base section to provide protection and support for said whip antenna assembly without substantially reducing the flexibility of said assembly.
Claim 3
Dependent Claim
28 words
A whip antenna assembly according to claim 1, wherein said knob has a spherical shape and said metal base section has a threaded portion to engage said receptacle.
Claim 4
Dependent Claim
119 words
A whip antenna assembly for attachment to a receptacle in a communications device comprising; wire wound in a helix to form a highly flexible cable construction having a first and second end, a conductive metal base section injection cast onto said cable first end and having a threaded portion to engage the receptacle; an environmental cover injection molded over said cable and base piece to provide protection and support for said whip antenna assembly without substantially reducing the flexibility of said assembly, wherein said environmental cover includes a skirt portion proximate to said threaded portion, said skirt portion acting as a gasket to seal and frictionally secure said whip antenna assembly when said threaded portion fully engages said receptacle.
Claim 5
Dependent Claim
119 words
A whip antenna assembly for attachment to a receptacle in a communications device comprising; wire wound in a helix to form a highly flexible cable construction having a first and second end, a conductive metal base section injection cast onto said cable first end and having a threaded portion to engage the receptacle; an environmental cover injection molded over said cable and base piece to provide protection and support for said whip antenna assembly without substantially reducing the flexibility of said assembly, wherein said environmental cover includes a skirt portion proximate to said threaded portion, said skirt portion acting as a gasket to seal and frictionally secure said whip antenna assembly when said threaded portion fully engages said receptacle.
Claim 6
Dependent Claim
35 words
A whip antenna assembly according to claim 3, wherein said environmental cover includes both finger grip flutes on the surface of said skirt portion and strain relief grooves immediately adjacent to said finger grip flutes.
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) | 1987-03-06 | 1987-09-05 | 1988-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-06 | 1991-09-05 | 1992-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-06 | 1995-09-05 | 1996-03-06 | $7700.00 | Window Closed / Lapsed |