Electrical connectors – With insulation other than conductor sheath – Plural-contact coupling part
Reexamination Certificate
2000-12-01
2001-09-11
Sircus, Brian (Department: 2839)
Electrical connectors
With insulation other than conductor sheath
Plural-contact coupling part
Reexamination Certificate
active
06287152
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to a rotatable holder for a halogen lamp, particularly to one that can be threadably connected with a conventional threaded lamp socket to fit a halogen lamp in order to increase its effectiveness and practicability, as well as ease of usage.
2. Description of the Related Art
A halogen lamp is quite different from the prior art threaded lamp. A halogen lamp is shown in FIG.
1
. The top of the bulb
101
of the halogen-lamp
10
is provided with a connector
102
having upwardly protruding plus and minus insert lugs
103
A,
103
B and the lamp
10
is insertable into a lamp socket
20
, which includes a cylindrical porcelain shell
201
having two arc-shaped insert grooves
202
for receiving the two insert lugs
103
A,
103
B of the lamp
10
and to engage therein by turning the lamp
10
, to complete the combination of the halogen lamp
10
with the lamp socket
20
, as shown in FIG.
3
.
More specifically, the cylindrical porcelain shell
201
of the lamp socket
20
, as shown in
FIG. 4
, is provided with two insert grooves
202
and two metal terminals
204
are positioned at outer sides of the two insert grooves
202
and connected with electric wires
203
. Two spring members
205
are respectively provided in the insert grooves
202
and elastically contact the metal terminals
204
to push the terminals
204
to face the insert grooves
202
. Then, an insulating disc
206
and a connecting frame
207
on the insulating disc
206
are combined with the upper end of the cylindrical porcelain shell
201
by means of rivets
207
A. Then, the halogen-lamp
10
is inserted in the lamp socket
20
, so that the insert lugs
103
of the halogen lamp
10
and the metal terminals
204
of the lamp socket
20
contact each other to make an electric connection for lighting. In addition, the elasticity of the spring members
205
pushes the metal terminals
204
to tightly clasp the insert lugs
103
A,
103
B of the halogen lamp
10
to maintain a smooth flow of electric current.
As can be understood from the description above, a special lamp socket
20
is needed for installing a halogen lamp
10
. Conventionally, common threaded lamp sockets are installed on a wall and electric wires are hidden inside the walls to maintain an orderly appearance. When a halogen lamp is to be used, the hidden wires have to be found and pulled out to connect with a special lamp socket after the conventional threaded lamp socket has been removed, which is very complicated and inconvenient.
SUMMARY OF THE INVENTION
The objective of the invention is to offer a rotatable socket for a halogen lamp that can be threadably combined with a conventional lamp socket to fit a halogen lamp, taking advantage of widely available conventional common lamp sockets.
The rotatable socket for a halogen lamp in the present invention includes a porcelain base having two arc-shaped insert grooves in its bottom and an H-shaped upright post upwardly protruding on the bottom and having a protruding lug on the top center. Two coil springs are positioned at two opposite sides of the post, and plus and minus contact members are positioned in each of the two opposite sides. An upper curved section of the plus contact member rests on the protruding lug of the H-shaped post, and an upper curved section of the minus contact member is positioned on top of the right side wing of the H-shaped post. In addition, the lower ends of the two contact members are formed into terminals respectively extending to the insert grooves of the porcelain base to be positioned oppositely and in parallel. Two coil springs are then separately positioned between the backside of each terminal member and the porcelain base to push the terminal members to bias on to the outer circumference of the inserting grooves.
A mica plate is then placed on the H-shaped post, which is surrounded by a metal threaded sleeve by means of rivets. The metal threaded sleeve presses both the mica plate and the plus and the minus contact members in place. The metal threaded sleeve includes an open top for the upper curved section of the plus contact member to protrude out, and a top annular rim protrudes inwardly to press the top curved section of the minus contact member on the right side wing of the H-shaped post. Thus the rotatable socket for a halogen-lamp is completed.
In connecting the rotatable socket for a halogen lamp with a conventional lamp socket, the threaded rotatable sleeve is threadably combined with the female threaded metal cylinder of the conventional lamp socket to let the plus and minus contact members and the rotatable sleeve to respectively and correspondingly contact with the plus connect point and the minus threaded cylinder of the conventional lamp socket. At the same time, the inserting lugs of the halogen lamp are inserted into the insert grooves at the bottom of the porcelain base to contact with the plus and minus terminal members.
REFERENCES:
patent: 1922394 (1933-08-01), Raney
patent: 2054497 (1936-09-01), Doherty
patent: 3023394 (1962-02-01), Hubbell
patent: 4199207 (1980-04-01), Lee
patent: 5234355 (1993-08-01), Sosinski et al.
patent: 5417594 (1995-05-01), Herman et al.
Bacon & Thomas
Dinh Phuong K T
Sircus Brian
Sun Lite Sockets Industry Inc.
LandOfFree
Rotatable socket for a halogen lamp does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rotatable socket for a halogen lamp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rotatable socket for a halogen lamp will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2467960