US5642932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combat-oriented flashlight
Assignee: Laser Products Corp
•
Filing: 1994-12-22
•
Granted: 1997-07-01
•
Expires: 2014-12-22
Abstract
Abstract Flashlights are provided with a mode of operation enabling switching at a thumb area of a human hand while retaining that flashlight with fingers of that human hand during switching of that flashlight at that thumb area. The flashlight has a battery barrel provided with a tail-end switch. That battery barrel is also provided with a reduced diameter portion spaced from that tail-end switch, and with a retention element projecting from that reduced diameter portion for engagement by at least one of the fingers of the human hand during switching of the flashlight at the thumb area.
Inventors
- 👤 John Wallace Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:33
CPC Classifications
F; F21; F21V; F21V23/00; F21V23/04; F21V23/0414; F21V23/0421; F21L; F21L4/00; F21L4/005
Claims Analysis
Total Claims: 58
Claim 1
Independent Claim
170 words
In a method of providing a flashlight including an elongate battery barrel having a front end and a tail end opposite said front end, with a mode of operation enabling switching of said flashlight at a thumb area of a human hand while retaining said flashlight with fingers of said human hand during switching of said flashlight at said thumb area, the improvement comprising in combination: locating at said front end of said elongate battery barrel a lamp assembly including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; providing said battery barrel at said tail end with a tail-end switch for said flashlight; providing said battery barrel with a reduced diameter portion spaced from said tail-end switch; and providing said battery barrel with a retention element projecting from said reduced diameter portion beyond a maximum lateral dimension of said barrel for retention of the flashlight between two adjacent ones of said fingers of the human hand during switching of said flashlight at said thumb area.
Claim 2
Dependent Claim
170 words
In a method of providing a flashlight including an elongate battery barrel having a front end and a tail end opposite said front end, with a mode of operation enabling switching of said flashlight at a thumb area of a human hand while retaining said flashlight with fingers of said human hand during switching of said flashlight at said thumb area, the improvement comprising in combination: locating at said front end of said elongate battery barrel a lamp assembly including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; providing said battery barrel at said tail end with a tail-end switch for said flashlight; providing said battery barrel with a reduced diameter portion spaced from said tail-end switch; and providing said battery barrel with a retention element projecting from said reduced diameter portion beyond a maximum lateral dimension of said barrel for retention of the flashlight between two adjacent ones of said fingers of the human hand during switching of said flashlight at said thumb area.
Claim 3
Dependent Claim
35 words
A method as in claim 1, wherein: said flashlight is made adaptable to various human hand sizes by rendering said retention element adjustable in position on said reduced diameter portion relative to said tail-end switch.
Claim 4
Dependent Claim
38 words
A method as in claim 1, wherein: said flashlight is made adaptable to typical human hand sizes by rendering said retention element adjustable in position on said reduced diameter portion in discrete steps relative to said tail-end switch.
Claim 5
Dependent Claim
25 words
A method as in claim 1, wherein: said battery barrel is provided with a retention shoulder between said reduced diameter portion and said tail-end switch.
Claim 6
Dependent Claim
15 words
A method as in claim 4, wherein: said retention element is retained with said shoulder.
Claim 7
Dependent Claim
25 words
A method as in claim 4, wherein: said retention element extends around said reduced diameter portion and is axially retained in place with said shoulder.
Claim 8
Dependent Claim
38 words
A method as in claim 4, wherein: said flashlight is rendered adaptable to typical human hand sizes by providing said reduced diameter portion with removable spacer elements between said retention element and said shoulder of the battery barrel.
Claim 9
Dependent Claim
38 words
A method as in claim 4, wherein: said flashlight is made adaptable to typical human hand sizes by rendering said retention element adjustable in position on said reduced diameter portion in discrete steps relative to said tail-end switch.
Claim 10
Dependent Claim
46 words
A method as in claim 1, wherein: said reduced diameter portion is adapted to be held between two adjacent fingers of said human hand; and said retention element is adapted to be engaged by said two fingers during switching of said flashlight at said thumb area.
Claim 11
Dependent Claim
31 words
A method as in claim 1, wherein: handling of said flashlight is improved by means of a lanyard attached to said barrel between said reduced diameter portion and said tail-end switch.
Claim 12
Dependent Claim
135 words
In a flashlight, the improvement comprising in combination: an elongate battery barrel having a front end and a tail end opposite said front end; a lamp assembly located at said front end of said elongate battery barrel and including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; a tail-end switch for said flashlight on said battery barrel at said tail end and electrically connectible to said lamp; a reduced diameter portion on said battery barrel spaced from said tail-end switch; and a retention element projecting from said reduced diameter portion beyond a maximum lateral dimension of said barrel and adapted for retention of the flashlight between two adjacent fingers of a human hand during switching of said flashlight with said tail-end switch at a thumb area of said human hand.
Claim 13
Dependent Claim
135 words
In a flashlight, the improvement comprising in combination: an elongate battery barrel having a front end and a tail end opposite said front end; a lamp assembly located at said front end of said elongate battery barrel and including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; a tail-end switch for said flashlight on said battery barrel at said tail end and electrically connectible to said lamp; a reduced diameter portion on said battery barrel spaced from said tail-end switch; and a retention element projecting from said reduced diameter portion beyond a maximum lateral dimension of said barrel and adapted for retention of the flashlight between two adjacent fingers of a human hand during switching of said flashlight with said tail-end switch at a thumb area of said human hand.
Claim 14
Dependent Claim
27 words
A flashlight as in claim 11, wherein: said retention element is adapted to be adjustable in position on said reduced diameter portion relative to said tail-end switch.
Claim 15
Dependent Claim
30 words
A flashlight as in claim 11, wherein: said retention element is adapted to be adjustable in position on said reduced diameter portion in discrete steps relative to said tail-end switch.
Claim 16
Dependent Claim
22 words
A flashlight as in claim 11, wherein: said battery barrel has a shoulder between said reduced diameter portion and said tail-end switch.
Claim 17
Dependent Claim
17 words
A flashlight as in claim 14, wherein: said retention element is adapted for retention by said shoulder.
Claim 18
Dependent Claim
25 words
A flashlight as in claim 14, wherein: said retention element extends around said reduced diameter portion and is adapted for axial retention by said shoulder.
Claim 19
Dependent Claim
21 words
A flashlight as in claim 14, including: removable spacer elements between said retention element and said shoulder of the battery barrel.
Claim 20
Dependent Claim
30 words
A flashlight as in claim 14, wherein: said retention element is adapted to be adjustable in position on said reduced diameter portion in discrete steps relative to said tail-end switch.
Claim 21
Dependent Claim
45 words
A flashlight as in claim 11, wherein: said reduced diameter portion is dimensioned for retention between two adjacent fingers of said human hand; and said retention element is adapted to be engaged by said two fingers during switching of said flashlight at said thumb area.
Claim 22
Dependent Claim
22 words
A flashlight as in claim 11, including: a lanyard attached to said barrel between said reduced diameter portion and said tail-end switch.
Claim 23
Dependent Claim
197 words
In a method of providing a flashlight including an elongate battery barrel having a front end and a tail end opposite said front end, with a mode of operation enabling switching of said flashlight at a thumb area of a human hand while retaining said flashlight with fingers of said human hand during switching of said flashlight at said thumb area, the improvement comprising in combination: locating at said front end of said elongate battery barrel a lamp assembly including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; providing said battery barrel at said tail end with a tail-end switch for said flashlight; providing said battery barrel with a reduced diameter portion spaced from said tail-end switch; providing said battery barrel with a retention element projecting from said reduced diameter portion beyond a maximum lateral dimension of said barrel for retention of the flashlight between two adjacent ones of said fingers of the human hand during switching of said flashlight at said thumb area; and making said flashlight adaptable to various human hand sizes by rendering said retention element adjustable in position on said reduced diameter portion relative to said tail-end switch.
Claim 24
Dependent Claim
197 words
In a method of providing a flashlight including an elongate battery barrel having a front end and a tail end opposite said front end, with a mode of operation enabling switching of said flashlight at a thumb area of a human hand while retaining said flashlight with fingers of said human hand during switching of said flashlight at said thumb area, the improvement comprising in combination: locating at said front end of said elongate battery barrel a lamp assembly including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; providing said battery barrel at said tail end with a tail-end switch for said flashlight; providing said battery barrel with a reduced diameter portion spaced from said tail-end switch; providing said battery barrel with a retention element projecting from said reduced diameter portion beyond a maximum lateral dimension of said barrel for retention of the flashlight between two adjacent ones of said fingers of the human hand during switching of said flashlight at said thumb area; and making said flashlight adaptable to various human hand sizes by rendering said retention element adjustable in position on said reduced diameter portion relative to said tail-end switch.
Claim 25
Dependent Claim
38 words
A method as in claim 21, wherein: said flashlight is made adaptable to typical human hand sizes by rendering said retention element adjustable in position on said reduced diameter portion in discrete steps relative to said tail-end switch.
Claim 26
Dependent Claim
25 words
A method as in claim 21, wherein: said battery barrel is provided with a retention shoulder between said reduced diameter portion and said tail-end switch.
Claim 27
Dependent Claim
15 words
A method as in claim 23, wherein: said retention element is retained with said shoulder.
Claim 28
Dependent Claim
25 words
A method as in claim 23, wherein: said retention element extends around said reduced diameter portion and is axially retained in place with said shoulder.
Claim 29
Dependent Claim
38 words
A method as in claim 23, wherein: said flashlight is rendered adaptable to typical human hand sizes by providing said reduced diameter portion with removable spacer elements between said retention element and said shoulder of the battery barrel.
Claim 30
Dependent Claim
20 words
A method as in claim 21, wherein: said retention element is projected beyond a maximum lateral dimension of said barrel.
Claim 31
Dependent Claim
46 words
A method as in claim 21, wherein: said reduced diameter portion is adapted to be held between two adjacent fingers of said human hand; and said retention element is adapted to be engaged by said two fingers during switching of said flashlight at said thumb area.
Claim 32
Dependent Claim
31 words
A method as in claim 21, wherein: handling of said flashlight is improved by means of a lanyard attached to said barrel between said reduced diameter portion and said tail-end switch.
Claim 33
Dependent Claim
186 words
In a method of providing a flashlight including an elongate battery barrel having a front end and a tail end opposite said front end, with a mode of operation enabling switching of said flashlight at a thumb area of a human hand while retaining said flashlight with fingers of said human hand during switching of said flashlight at said thumb area, the improvement comprising in combination: locating at said front end of said elongate battery barrel a lamp assembly including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; providing said battery barrel at said tail end with a tail-end switch for said flashlight; providing said battery barrel with a reduced diameter portion spaced from said tail-end switch; providing said battery barrel with a retention shoulder between said reduced diameter portion and said tail-end switch; providing said battery barrel with a retention element projecting from said reduced diameter portion for retention of the flashlight between two adjacent ones of said fingers of the human hand during switching of said flashlight at said thumb area; and retaining said retention element with said shoulder.
Claim 34
Dependent Claim
186 words
In a method of providing a flashlight including an elongate battery barrel having a front end and a tail end opposite said front end, with a mode of operation enabling switching of said flashlight at a thumb area of a human hand while retaining said flashlight with fingers of said human hand during switching of said flashlight at said thumb area, the improvement comprising in combination: locating at said front end of said elongate battery barrel a lamp assembly including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; providing said battery barrel at said tail end with a tail-end switch for said flashlight; providing said battery barrel with a reduced diameter portion spaced from said tail-end switch; providing said battery barrel with a retention shoulder between said reduced diameter portion and said tail-end switch; providing said battery barrel with a retention element projecting from said reduced diameter portion for retention of the flashlight between two adjacent ones of said fingers of the human hand during switching of said flashlight at said thumb area; and retaining said retention element with said shoulder.
Claim 35
Dependent Claim
25 words
A method as in claim 30, wherein: said retention element extends around said reduced diameter portion and is axially retained in place with said shoulder.
Claim 36
Dependent Claim
38 words
A method as in claim 30, wherein: said flashlight is rendered adaptable to typical human hand sizes by providing said reduced diameter portion with removable spacer elements between said retention element and said shoulder of the battery barrel.
Claim 37
Dependent Claim
20 words
A method as in claim 30, wherein: said retention element is projected beyond a maximum lateral dimension of said barrel.
Claim 38
Dependent Claim
46 words
A method as in claim 30, wherein: said reduced diameter portion is adapted to be held between two adjacent fingers of said human hand; and said retention element is adapted to be engaged by said two fingers during switching of said flashlight at said thumb area.
Claim 39
Dependent Claim
146 words
In a flashlight, the improvement comprising in combination: an elongate battery barrel having a front end and a tail end opposite said front end; a lamp assembly located at said front end of said elongate battery barrel and including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; a tail-end switch for said flashlight on said battery barrel at said tail end and electrically connectible to said lamp; a reduced diameter portion on said battery barrel spaced from said tail-end switch; and a retention element projecting from said reduced diameter portion and adapted for retention of the flashlight between two adjacent fingers of a human hand during switching of said flashlight with said tail-end switch at a thumb area of said human hand; said retention element adapted to be adjustable in position on said reduced diameter portion relative to said tail-end switch.
Claim 40
Dependent Claim
146 words
In a flashlight, the improvement comprising in combination: an elongate battery barrel having a front end and a tail end opposite said front end; a lamp assembly located at said front end of said elongate battery barrel and including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; a tail-end switch for said flashlight on said battery barrel at said tail end and electrically connectible to said lamp; a reduced diameter portion on said battery barrel spaced from said tail-end switch; and a retention element projecting from said reduced diameter portion and adapted for retention of the flashlight between two adjacent fingers of a human hand during switching of said flashlight with said tail-end switch at a thumb area of said human hand; said retention element adapted to be adjustable in position on said reduced diameter portion relative to said tail-end switch.
Claim 41
Dependent Claim
30 words
A flashlight as in claim 35, wherein: said retention element is adapted to be adjustable in position on said reduced diameter portion in discrete steps relative to said tail-end switch.
Claim 42
Dependent Claim
22 words
A flashlight as in claim 35, wherein: said battery barrel has a shoulder between said reduced diameter portion and said tail-end switch.
Claim 43
Dependent Claim
17 words
A flashlight as in claim 37, wherein: said retention element is adapted for retention by said shoulder.
Claim 44
Dependent Claim
25 words
A flashlight as in claim 37, wherein: said retention element extends around said reduced diameter portion and is adapted for axial retention by said shoulder.
Claim 45
Dependent Claim
21 words
A flashlight as in claim 37, including: removable spacer elements between said retention element and said shoulder of the battery barrel.
Claim 46
Dependent Claim
19 words
A flashlight as in claim 35, wherein: said retention element projects beyond a maximum lateral dimension of said barrel.
Claim 47
Dependent Claim
45 words
A flashlight as in claim 35, wherein: said reduced diameter portion is dimensioned for retention between two adjacent fingers of said human hand; and said retention element is adapted to be engaged by said two fingers during switching of said flashlight at said thumb area.
Claim 48
Dependent Claim
22 words
A flashlight as in claim 35, including: a lanyard attached to said barrel between said reduced diameter portion and said tail-end switch.
Claim 49
Dependent Claim
151 words
In a flashlight, the improvement comprising in combination: an elongate battery barrel having a front end and a tail end opposite said front end; a lamp assembly located at said front end of said elongate battery barrel and including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; a tail-end switch for said flashlight on said battery barrel at said tail end and electrically connectible to said lamp; a reduced diameter portion on said battery barrel spaced from said tail-end switch; a shoulder on said battery barrel between said reduced diameter portion and said tail-end switch; and a retention element projecting from said reduced diameter portion and adapted for retention of the flashlight between two adjacent fingers of a human hand during switching of said flashlight with said tail-end switch at a thumb area of said human hand; said retention element adapted for retention by said shoulder.
Claim 50
Dependent Claim
151 words
In a flashlight, the improvement comprising in combination: an elongate battery barrel having a front end and a tail end opposite said front end; a lamp assembly located at said front end of said elongate battery barrel and including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; a tail-end switch for said flashlight on said battery barrel at said tail end and electrically connectible to said lamp; a reduced diameter portion on said battery barrel spaced from said tail-end switch; a shoulder on said battery barrel between said reduced diameter portion and said tail-end switch; and a retention element projecting from said reduced diameter portion and adapted for retention of the flashlight between two adjacent fingers of a human hand during switching of said flashlight with said tail-end switch at a thumb area of said human hand; said retention element adapted for retention by said shoulder.
Claim 51
Dependent Claim
25 words
A flashlight as in claim 44, wherein: said retention element extends around said reduced diameter portion and is adapted for axial retention by said shoulder.
Claim 52
Dependent Claim
21 words
A flashlight as in claim 44, including: removable spacer elements between said retention element and said shoulder of the battery barrel.
Claim 53
Dependent Claim
19 words
A flashlight as in claim 44, wherein: said retention element projects beyond a maximum lateral dimension of said barrel.
Claim 54
Dependent Claim
45 words
A flashlight as in claim 44, wherein: said reduced diameter portion is dimensioned for retention between two adjacent fingers of said human hand; and said retention element is adapted to be engaged by said two fingers during switching of said flashlight at said thumb area.
Claim 55
Dependent Claim
22 words
A flashlight as in claim 44, including: a lanyard attached to said barrel between said reduced diameter portion and said tail-end switch.
Claim 56
Dependent Claim
162 words
In a flashlight, the improvement comprising in combination: an elongate battery barrel having a front end and a tail end opposite said front end; a lamp assembly located at said front end of said elongate battery barrel and including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; a tail-end switch for said flashlight on said battery barrel at said tail end and electrically connectible to said lamp; a reduced diameter portion on said battery barrel spaced from said tail-end switch and having in an axial direction of said barrel a length at least equal to the width of a finger of a human hand, for retention of said reduced diameter portion between two adjacent fingers of said human hand; and a retention element projecting from said reduced diameter portion and adapted for retention of the flashlight between said two fingers during switching of said flashlight with said tail-end switch at a thumb area of said human hand.
Claim 57
Dependent Claim
162 words
In a flashlight, the improvement comprising in combination: an elongate battery barrel having a front end and a tail end opposite said front end; a lamp assembly located at said front end of said elongate battery barrel and including a lamp and lamp reflector pointing longitudinally away from said elongate battery barrel; a tail-end switch for said flashlight on said battery barrel at said tail end and electrically connectible to said lamp; a reduced diameter portion on said battery barrel spaced from said tail-end switch and having in an axial direction of said barrel a length at least equal to the width of a finger of a human hand, for retention of said reduced diameter portion between two adjacent fingers of said human hand; and a retention element projecting from said reduced diameter portion and adapted for retention of the flashlight between said two fingers during switching of said flashlight with said tail-end switch at a thumb area of said human hand.
Claim 58
Dependent Claim
27 words
A flashlight as in claim 50, wherein: said retention element extends substantially perpendicularly to said reduced diameter portion between said reduced diameter portion and said tail-end switch.
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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) | 2000-06-30 | 2000-12-30 | 2001-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-30 | 2004-12-30 | 2005-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-30 | 2008-12-30 | 2009-07-01 | $7700.00 | Window Closed / Lapsed |