US5343213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap-in antenna assembly
Assignee: Motorola Solutions Inc
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Filing: 1991-10-22
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Granted: 1994-08-30
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Expires: 2011-10-22
Abstract
Abstract An extendable antenna assembly allows for snap-in assembly and quick disconnection thereby saving both time and money in antenna assembly and replacement. The extendable antenna assembly includes an extendable radiating half-wavelength antenna (108) and a helical quarter wavelength antenna (300). The helical antenna (300) includes an antenna section (112) and a support section which includes a number of resilient leg members (116). Some of the leg members (116) include snaps (118) which engage with retention areas (122) which are found in the radio housing (120). A guide tube (102) having a flared top section (124) is found inside the radio (100) and provides for a way of compressing the individual leg members (116) thereby, releasing the extendable antenna assembly from the radio housing (120) when the antenna assembly requires removal.
Inventors
- 👤 Wilfried E. Kottke
- 👤 Jill C. Olkoski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:46
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/241; H01Q1/242; H01Q1/243; H01Q1/244; H01Q1/08; H01Q1/088
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
169 words
An extendable antenna assembly, for a communication device enclosed in a housing, the housing including an antenna housing portion having an antenna retention area, the extendable antenna assembly comprising: a helical antenna, the helical antenna including an antenna section having a helical winding and antenna input terminal, the helical antenna further including an antenna support coupled to the antenna section, said antenna support including a resilient leg member having a snap which engages to the antenna retention area; an extendable antenna extending through the helical winding, the extendable antenna being capacitively coupled to the helical antenna when extended from the antenna housing section; and an antenna guide tube residing inside of the housing for collecting the extendable antenna when the extendable antenna is retracted into the antenna housing section; and the resilient leg member has a chamfered end portion and the antenna guide tube has a flared top portion for gathering and compressing the resilient leg member when the antenna guide tube is pressed against the resilient leg member.
Claim 2
Dependent Claim
169 words
An extendable antenna assembly, for a communication device enclosed in a housing, the housing including an antenna housing portion having an antenna retention area, the extendable antenna assembly comprising: a helical antenna, the helical antenna including an antenna section having a helical winding and antenna input terminal, the helical antenna further including an antenna support coupled to the antenna section, said antenna support including a resilient leg member having a snap which engages to the antenna retention area; an extendable antenna extending through the helical winding, the extendable antenna being capacitively coupled to the helical antenna when extended from the antenna housing section; and an antenna guide tube residing inside of the housing for collecting the extendable antenna when the extendable antenna is retracted into the antenna housing section; and the resilient leg member has a chamfered end portion and the antenna guide tube has a flared top portion for gathering and compressing the resilient leg member when the antenna guide tube is pressed against the resilient leg member.
Claim 3
Dependent Claim
40 words
The extendable antenna assembly of claim 1, wherein the extendable antenna has top and bottom portions and the bottom portion includes a stop member for stopping the extendable antenna when the extendable antenna has reached the point of furthest extension.
Claim 4
Dependent Claim
19 words
An extendable antenna assembly as defined in claim 1, wherein the helical antenna comprises a quarter-wave length helical antenna.
Claim 5
Dependent Claim
206 words
A radio having a housing which includes an antenna housing section having a retention area, the radio comprising: transmitter means; receiver means; an extendable antenna assembly, comprising: a helical antenna, the helical antenna including an antenna section having a helical winding including an antenna input terminal, the helical antenna further including an antenna support coupled to the antenna section, said antenna support including a plurality of resilient leg members and at least one of the plurality of resilient leg members having a snap which engages to the antenna housing section's retention area; and an extendable antenna extending through the helical winding, the extendable antenna being capacitively coupled to the helical antenna when extended from the antenna housing section; antenna switch means for coupling said transmitter and receiver means selectively to the antenna input terminal; and an antenna guide tube residing inside of the antenna housing section for collecting the extendable antenna when the extendable antenna is retracted into the housing section; and the plurality of resilient leg members have chamfered end portions and the antenna guide tube has a flared top portion for gathering and compressing the plurality of resilient leg members when the antenna guide tube is pressed against the plurality of resilient leg members.
Claim 6
Dependent Claim
206 words
A radio having a housing which includes an antenna housing section having a retention area, the radio comprising: transmitter means; receiver means; an extendable antenna assembly, comprising: a helical antenna, the helical antenna including an antenna section having a helical winding including an antenna input terminal, the helical antenna further including an antenna support coupled to the antenna section, said antenna support including a plurality of resilient leg members and at least one of the plurality of resilient leg members having a snap which engages to the antenna housing section's retention area; and an extendable antenna extending through the helical winding, the extendable antenna being capacitively coupled to the helical antenna when extended from the antenna housing section; antenna switch means for coupling said transmitter and receiver means selectively to the antenna input terminal; and an antenna guide tube residing inside of the antenna housing section for collecting the extendable antenna when the extendable antenna is retracted into the housing section; and the plurality of resilient leg members have chamfered end portions and the antenna guide tube has a flared top portion for gathering and compressing the plurality of resilient leg members when the antenna guide tube is pressed against the plurality of resilient leg members.
Claim 7
Dependent Claim
39 words
The radio of claim 4, wherein the extendable antenna has top and bottom portions and the bottom portion includes a stop member for stopping the extendable antenna when the extendable antenna is fully extended from the antenna housing section.
Claim 8
Dependent Claim
41 words
The radio of claim 5, wherein the antenna stop member has a diameter which causes the plurality of resilient leg members to expand outwardly and provide for a pressure fit between the stop member and the plurality of individual leg members.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-08-29 | 1998-02-28 | 1998-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-29 | 2002-02-28 | 2002-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-29 | 2006-02-28 | 2006-08-30 | $7700.00 | Window Closed / Lapsed |