Patent US4907135A successfully refreshed from Google Patents.
US4907135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental mirror flashlight
Assignee: Sunstar Americas Inc
•
Filing: 1988-05-11
•
Granted: 1990-03-06
•
Expires: 2008-05-11
Abstract
Abstract A pen light has a removable dental mirror positioned to be in the beam of the light. The flashlight has a barrel which is constricted on one end to capture and hold a pen light bulb dropped in the other end. The electrical circuit within the flashlight includes a strip spring with a bow or arched section which make contact with the base of a flashlight bulb of almost any type and with many different sizes, on a bulb drop-in basis. The electrical contacts are such that the batteries may be dropped either end first into the barrel of the flashlight. The off-on switch has a threaded screw so that the light is switched off and on by turning a screw.
Inventors
- 👤 Emanuel B. Tarrson
- 👤 Dane Maric
- 👤 Stevan Tisma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:32
CPC Classifications
F; F21; F21L; F21L2/00; F21W; F21W2131/00; F21W2131/20; F21W2131/202
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
134 words
A flashlight comprising an elongated insulative barrel wall with an unbroken surface terminating at one end in an opening surrounded by an internal annular step and terminating at the other end in a threaded section, a conductive strip spring extending internally along the length of said barrel and being embedded and totally enclosed within said barrel wall from an internally bowed section near said internal annular step to a projection at the threaded end of said barrel, an end cap having internal threads which are complentary to said threaded section, a washer contact within said end cap, and a screw extending through said end cap to extend or retract said washer contact, said washer contact having dimensions which enable it to make or break an electrical circuit responsive to a turning of said screw.
Claim 2
Dependent Claim
134 words
A flashlight comprising an elongated insulative barrel wall with an unbroken surface terminating at one end in an opening surrounded by an internal annular step and terminating at the other end in a threaded section, a conductive strip spring extending internally along the length of said barrel and being embedded and totally enclosed within said barrel wall from an internally bowed section near said internal annular step to a projection at the threaded end of said barrel, an end cap having internal threads which are complentary to said threaded section, a washer contact within said end cap, and a screw extending through said end cap to extend or retract said washer contact, said washer contact having dimensions which enable it to make or break an electrical circuit responsive to a turning of said screw.
Claim 3
Dependent Claim
47 words
The flashlight of claim 1 wherein said washer contact is a disc which has a central protrusion that extends inwardly into said barrel to make contact with a battery in said barrel simultaneously with a contact between said washer contact and said projection at said threaded end.
Claim 4
Dependent Claim
37 words
The flashlight of claim 2 wherein said protrusion has dimensions of a size and shape which limits its contact to the central terminal of a battery when said battery is inserted bottom end first into said barrel.
Claim 5
Dependent Claim
48 words
The flashlight of claim 3 wherein said opening has a size and shape which enables a small diameter end of a pen light bulb to pass therethrough and said internal annular step has dimensions which preclude a larger shoulder on said pen light bulb from a passing therethrough.
Claim 6
Dependent Claim
37 words
The flashlight of claim 4 wherein said bowed section of said conductive strip spring is positioned adjacent a base on said pen light bulb when it is in position with said larger shoulder at said annular step.
Claim 7
Dependent Claim
47 words
The flashlight of claim 5 and a dental mirror having a handle with said mirror on one end and a C-shaped clamp on the opposite end of said handle, said C-shaped handle having dimensions which snap on or off of and slidably and adjustably engage said barrel.
Claim 8
Dependent Claim
183 words
A dental mirror flashlight comprising an elongated insulative barrel wall with an unbroken surface terminating at one end in an opening surrounded by an internal annular step and terminating at the other end in a threaded section, a conductive strip spring extending internally along the length of said barrel and being embedded and totally enclosed within said barrel wall from an internally bowed section near said internal annular step to a projection at the threaded end of said barrel, an end cap having internal threads which are complementary to said threaded section, a washer contact within said end cap, and a screw extending through said end cap to extend or retract said washer contact, said washer contact having dimensions which enable it to make or break an electrical circuit responsive to a turning of said screw, and further comprising a dental mirror having a handle with said mirror at one end and a C-shaped clamp at an opposite end of said handle, said C-shaped clamp snapping onto and frictionally engaging said barrel, said mirror being thereby adjustably and removably attached to said barrel.
Claim 9
Dependent Claim
183 words
A dental mirror flashlight comprising an elongated insulative barrel wall with an unbroken surface terminating at one end in an opening surrounded by an internal annular step and terminating at the other end in a threaded section, a conductive strip spring extending internally along the length of said barrel and being embedded and totally enclosed within said barrel wall from an internally bowed section near said internal annular step to a projection at the threaded end of said barrel, an end cap having internal threads which are complementary to said threaded section, a washer contact within said end cap, and a screw extending through said end cap to extend or retract said washer contact, said washer contact having dimensions which enable it to make or break an electrical circuit responsive to a turning of said screw, and further comprising a dental mirror having a handle with said mirror at one end and a C-shaped clamp at an opposite end of said handle, said C-shaped clamp snapping onto and frictionally engaging said barrel, said mirror being thereby adjustably and removably attached to said barrel.
References Cited (Backward Citations)
US1955511A
Cited
US2107791A
Cited
US2302072A
Cited
FR1020623A
Cited
US2706769A
Cited
FR1109712A
Cited
US3592199A
Cited
US4515295A
Cited
US4559588A
Cited
US4516194A
Cited
US4722035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-05 | 1993-09-04 | 1994-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-05 | 1997-09-04 | 1998-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-05 | 2001-09-04 | 2002-03-06 | $7700.00 | Window Closed / Lapsed |