Sélection de la langue

Search

Sommaire du brevet 1132673 

Énoncé de désistement de responsabilité concernant l'information provenant de tiers

Une partie des informations de ce site Web a été fournie par des sources externes. Le gouvernement du Canada n'assume aucune responsabilité concernant la précision, l'actualité ou la fiabilité des informations fournies par les sources externes. Les utilisateurs qui désirent employer cette information devraient consulter directement la source des informations. Le contenu fourni par les sources externes n'est pas assujetti aux exigences sur les langues officielles, la protection des renseignements personnels et l'accessibilité.

Disponibilité de l'Abrégé et des Revendications

L'apparition de différences dans le texte et l'image des Revendications et de l'Abrégé dépend du moment auquel le document est publié. Les textes des Revendications et de l'Abrégé sont affichés :

  • lorsque la demande peut être examinée par le public;
  • lorsque le brevet est émis (délivrance).
(12) Brevet: (11) CA 1132673
(21) Numéro de la demande: 1132673
(54) Titre français: DISPOSITIF DE CONNEXION DES CONDUCTEURS D'UNE LAMPE AU FILAMENT
(54) Titre anglais: LAMP LEAD TO WIRE ATTACHMENT FOR INTEGRAL STRING SETS
Statut: Durée expirée - après l'octroi
Données bibliographiques
(51) Classification internationale des brevets (CIB):
  • F21S 4/10 (2016.01)
  • F21V 23/00 (2015.01)
(72) Inventeurs :
  • BOWERS, HARRY J. (Etats-Unis d'Amérique)
(73) Titulaires :
  • GENERAL ELECTRIC COMPANY
(71) Demandeurs :
  • GENERAL ELECTRIC COMPANY (Etats-Unis d'Amérique)
(74) Agent: RAYMOND A. ECKERSLEYECKERSLEY, RAYMOND A.
(74) Co-agent:
(45) Délivré: 1982-09-28
(22) Date de dépôt: 1980-03-21
Licence disponible: S.O.
Cédé au domaine public: S.O.
(25) Langue des documents déposés: Anglais

Traité de coopération en matière de brevets (PCT): Non

(30) Données de priorité de la demande: S.O.

Abrégés

Abrégé anglais


LD-7467
ABSTRACT OF THE DISCLOSURE
A string set construction is disclosed in which the
leads from a wire lamp are mechanically joined to wire in the
power cord by a plastic sandwich including the insulation on
the power cord.

Revendications

Note : Les revendications sont présentées dans la langue officielle dans laquelle elles ont été soumises.


The embodiments of the invention in which an exclu-
sive property or privilege is claimed are defined as follows:
1. In a decorative string set having incandescent
lamps permanently connected to segments of insulated wire to form
a series circuit, the improvement comprising:
each lamp having lead wires in contact with and trans-
verse to respective ends of said segments of insulated wire;
and
a pair of thermoplastic sheets disposed in an
approximately parallel relationship with one on each side of
said lead wires and said ends;
said sheets being thermoplastically bonded to each
other and to the insulation on said ends, and said lead wires
and said ends being embedded between said bonded sheets and
held in electrical contact with a continuous pressure.
2. The string set of claim 1, wherein each of said
segments has insulator plastic over the entire length thereof,
and wherein some of said insulator plastic is included in the
bond of said lead wires to said ends.
3. The string set of claim 1, wherein said lead
wires of each lamp are doubled back on themselves for multiple
contact with said respective ends.
4. The string set of claim 3, further comprising
a plurality of translucent ornaments, each ornament at least
partially enclosing a lamp and overlying said thermoplastic
sheets.
5. The string set of claim 3, further comprising
a plurality of translucent ornaments, each ornament having tabs
on one end thereof and at least partially enclosing a lamp,
wherein said tabs comprise said thermoplastic sheets.
6. The string set of claim 5, wherein said
thermoplastic comprises polyvinylchloride.

7. The string set of claim 2, wherein said lead
wires of each lamp are doubled back on themselves for multiple
contact with said respective ends.
8. The string set of claim 7, further comprising
a plurality of translucent ornaments, each ornament at least
partially enclosing a lamp and overlying said thermoplastic
sheets.
9. The string set of claim 7, further comprising
a plurality of translucent ornaments, each ornament having
tabs on one end thereof and at least partially enclosing a lamp,
wherein said tabs comprise said thermoplastic sheets.

Description

Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.


326~3
This invention relates to the connection between an
electrical device and an insulated cable or cord or, more
particularly, to lamp and cord construction in integral
string sets.
In the past, a variety of constructions have been
used to electrically connect an electrical device, e.g., a
lamp or socket, to a cable or power cord. Considering prior
art decorative strirg sets as one, but not the only
example, the lamp is connected to the cord by way of a
socket. The socket generally comprises conductive tabs
which are crimped, twisted, soldered, or welded to the stripped
ends of the wires in the cord. The stripping, crimping, etc. all
involve complex assembly procedures which add to the cost of
the string set. Further, however, reliably the socket is
connected, a lamp must be inserted and make good contact
with the socket, a condition not necessarily obtained in the
hands of the consumer. Also, the string set must be
mechanically strong at the connections to withstand handling,
particularly the stress due to pulling in the direction of
the wire.
If the string set is intended for outdoor use, the
connections must be further protected from the environment
to avoid deterioration of the connections or possible short
circuits due to moisture. In the prior art, string sets
designated as suitable for outdoor use are noticeably heavier
in construction and generally costlier to make. Further,
whatever the recommendations of the manufacturer, there is
a problem in that some consumers will use an indoor set
outdoors, despite the attendant risks.
In view of the foregoing, it is therefore an object
of the present invention to provide an improved connection
between an electrical device and insulated wire.
Another object of the present invention is to

provide a superior integral string set.
A further object of the present invention is to
provide a string set suitable for use either indoors or
outdoors.
Another object of the present invention is to
provide a mechanically strong string set.
A further object of the present invention is to
simplify the construction of integral string sets.
The foregoing objects are achieved in the present
f 10 invention wherein the lead wires from each lamp are mechanically
clamped to the wires ina power cord by a plastic sandwich
which is thermally or ultrasonically softened temporarily. -~
In one embodiment of the present invention, the insulation
is not removed from the free ends of the power cord to which
the lamp is joined. In another embodiment, the insulation
is removed.
A more complete understanding of the present
invention can be obtained by considering the following
detailed description in conjunction with the accompanying
drawings, in which:
FIGURE 1 illustrates a partially assembled lamp and
wire sandwich.
FIGURE 2 illustrates a bottom view of the assembled
sandwich prior to softening the plastic.
FIGURE 3 illustrates the sandwich after softening.
FIGU~E 4 illustrates an integral string set in
accordance with the present invention.
FIGURE 1 illustrates a side view of a preferred
embodiment of the present invention as used in fastening wire
lamps to the wire of a string set. Specifically, a series
connected string set as used for decorative lighting during
holidays may be considered as a plurality of lamps interconnected

32~3
by a plurality of wire segments, the lamps and segments
together combining to form the series circuit which is
connected to a plug. In FIGURE 1, wire lamp 11, that is,
a lamp having lead wires extending from the sealed end -
thereof but lacking any base or base structure, is connected
to insulated wire segments 12 and 13 by way of lead wires 14
and 15. In a preferred embodiment of the present invention
lead wires 14 and 15 are doubled back on themselves to
increase the number of contacts with segments 12 and 13. It is
also preferred, although not necessary for the present
invention, that segments 12 and 13 comprise what is knowrl as
stranded wire, i.e. a plurality of strands of wire twisted
together as opposed to a single solid conductor. Wire segments
12 and 13 are interconnected by lead wires 14 and 15 and
filament 16. Also illustrated in the embodiment of
FIGURE 1 iS a shunt 17 such as disclosed in Canadian
application Serial No.3~ , filed concurrently herewith
and assigned to the assignee of the present invention.
Shunt 17 provides the dual functions of supporting and
positioning lead wires 14 and 15 within lamp 11 as well
as continuing the circuit in the event filament 16 opens.
Located from behind segments 12 and 13 is a plastic
sheet 18 which encloses the contact area between segments 12
and 13 and lead wires 14 and 15 respectively. The function
of plastic sheet 18 can be better understood by considering
FIGURES 2 and 3 which comprise end views of a preferred
embodiment of the present invention, before and after sealing
respectively.
As illustrated in FIGURE 2, overlying the other side
of a contact area is a second plastic sheet 19 of the same
general proportions as sheet 18 and approximately parallel
thereto. Lead wires 14 and 15 respectively touch conductors
21 and 22 from segments 12 and 13. The lead wires are not

2~
soldered, welded, or otherwise electrically bonded to
conductors 21 and 22. In assembling a string set in
accordance with the present invention, plastic sheets 18 and
19 are deformed, e.g. by thermal or ultrasonic means, to bond
to each other and the insulation on segments 12 and 13,
thereby sealing the region of contact between lead wires
14 and 15 and wires 21 and 22 respectively.
Unlike prior art contacts formed in deformed
plastic, it has been found that one conductor, e.g. wire 14,
need not rest on an anvil for the other conductor, e.g. lead
wire 12, to make reliable contact therewith. During the
bonding or deformation, the conductors are surrounded by
plastic in a liquid state and, upon cooling, are brought
into electrical contact. As should be apparent, this simplifies
manufacture since an exposed conductor does not have to be
covered in subsequent operations: a totally enclosed,
mechanically and electrically secure connection is made in
a single operation.
While illustrated for the sake of clarity in
FIGURES 1 and 2 as having the ends thereof stripped, wire
segments 12 and 13 preferably comprise a core conductor
surrounded over its entire length by an insulating jacket. It
has been found that during the deformation this insulation
does not interfere with the contact between lead wires 1~ and
15 and conductors 21 and 22. It appears that the lead wires
simply penetrate through the plastic in the fluid state and
make mechanical contact with the conductors. In this
manner, the construction of string sets in accordance with
the present invention is even more simplified, requiring
only the severance of the insulated wire into segments.
As illustrated in FIGURE 3, the deformation of
sheets 18 and 19 causes the plastic, which may comprise any
suitable thermoplastic such as polyvinylchloride (PVC), to

~3'~3
flow into the regions and force lead wires 14 and 15 into
mechanical contact with wires 21 and 22 respectively. It
; is a characteristic of most thermoplastics that upon going
from the liquid state to the solid state, some shrinkage
occurs. This shrinkage causes a continuous pressure to be
applied to the contact thereby assuring a reliable
electrical connection despite the absence of solder or welds.
Further, since the plastic sheets are bonded to each other as
well as to the plastic insulation around segments 12 and 13, the
entire contact area is sealed against hostile environments
as well as being mechanically strong, as strong as wire
segments 12 and 13 themselves.
FIG~RE 4 illustrates a string set in accordance
with the present invention wherein a plug 31 has connected
thereto a plurality of wire segments, such as segments 33
and 34 which in turn are interconnected by a plurality of
lamps 11. Surrounding lamps 11 are ornamental structures
such as disclosed in Canadian application Serial No. 3 ~ P,J~G
filed concurrently herewith and assigned to the assignee of
the present invention. As described in that application,
ornamental structures 35 preferably comprise a unitary
plastic part haviny tabs on the lower portion thereof which
fit around the contact area of the lamp as well as a portion
of the wire segment connected thereto. In accordance with the
present invention, these tabs may be substituted for plastic
sheets 18 and 19 or may be provided in addition to plastic
sheets 18 and 19 and further sealed to each other and to the
insulation of the wire segments. In the latter form, the
connections between the wire segments and lamps 11 are thus
doubly sealed against the environment, thereby providing a
lightweight, easily constructed string set which may be
used either indoors or outdoors.
-- 5 --

t~3
Having thus described the invention it will be
apparent to those of ordinary skill in the art that various
modifications can be made within the spirit and scope of the
present invention. For example, the choice of a particular
thermoplastic depends on considerations external to the
present invention, e.g. cost and government regulations.
Further, while illustrated as connected to segmented wire,
wire lamps may also be connected across continuous, parallel
conductors in accordance with the present invention. For
this connection, the thermal or ultrasonic source is suitably
shaped to contact the sheets at the appropriate locations.
The resultant string set then comprises parallel connections -
of the lamps.
-- 6 --
, : ~ . ,

Dessin représentatif

Désolé, le dessin représentatif concernant le document de brevet no 1132673 est introuvable.

États administratifs

2024-08-01 : Dans le cadre de la transition vers les Brevets de nouvelle génération (BNG), la base de données sur les brevets canadiens (BDBC) contient désormais un Historique d'événement plus détaillé, qui reproduit le Journal des événements de notre nouvelle solution interne.

Veuillez noter que les événements débutant par « Inactive : » se réfèrent à des événements qui ne sont plus utilisés dans notre nouvelle solution interne.

Pour une meilleure compréhension de l'état de la demande ou brevet qui figure sur cette page, la rubrique Mise en garde , et les descriptions de Brevet , Historique d'événement , Taxes périodiques et Historique des paiements devraient être consultées.

Historique d'événement

Description Date
Inactive : CIB désactivée 2019-01-19
Inactive : CIB attribuée 2018-04-25
Inactive : CIB attribuée 2018-04-25
Inactive : CIB en 1re position 2018-04-25
Inactive : Périmé (brevet sous l'ancienne loi) date de péremption possible la plus tardive 1999-09-28
Accordé par délivrance 1982-09-28

Historique d'abandonnement

Il n'y a pas d'historique d'abandonnement

Titulaires au dossier

Les titulaires actuels et antérieures au dossier sont affichés en ordre alphabétique.

Titulaires actuels au dossier
GENERAL ELECTRIC COMPANY
Titulaires antérieures au dossier
HARRY J. BOWERS
Les propriétaires antérieurs qui ne figurent pas dans la liste des « Propriétaires au dossier » apparaîtront dans d'autres documents au dossier.
Documents

Pour visionner les fichiers sélectionnés, entrer le code reCAPTCHA :



Pour visualiser une image, cliquer sur un lien dans la colonne description du document. Pour télécharger l'image (les images), cliquer l'une ou plusieurs cases à cocher dans la première colonne et ensuite cliquer sur le bouton "Télécharger sélection en format PDF (archive Zip)" ou le bouton "Télécharger sélection (en un fichier PDF fusionné)".

Liste des documents de brevet publiés et non publiés sur la BDBC .

Si vous avez des difficultés à accéder au contenu, veuillez communiquer avec le Centre de services à la clientèle au 1-866-997-1936, ou envoyer un courriel au Centre de service à la clientèle de l'OPIC.


Description du
Document 
Date
(aaaa-mm-jj) 
Nombre de pages   Taille de l'image (Ko) 
Revendications 1994-02-25 2 56
Dessins 1994-02-25 2 41
Page couverture 1994-02-25 1 18
Abrégé 1994-02-25 1 8
Description 1994-02-25 6 223