Electric lamp replacement cord with delay action switch专利检索-螺旋灯丝灯丝白炽灯光源灯具灯光专利检索查询-专利查询网

Electric lamp replacement cord with delay action switch

阅读：1008发布：2021-06-24

专利汇可以提供Electric lamp replacement cord with delay action switch专利检索，专利查询，专利分析的服务。并且A quick replacement automatic slack takeup electric cord for small appliances such as lamps, radios and the like, comprising a length of two-conductor plastic lamp cord which is preferably coiled and semipermanently set in a helix, one end of the lamp cord having attached to it a convention two-prong electric plug adapted to be inserted in a wall receptacle. The other end of the two-conductor cord carries and extends into one end of a special elongate receptacle or housing having a socket or recess at its other end, opposite the entrance of the two-conductor cord. The special receptacle has a pushbutton switch and a flat base, the latter enabling it to be supported on a table surface. Within the special receptacle are two metal connector pieces having sharp prongs which are located at the inner end of the socket. The socket is of substantially oblong cross-sectional configuration whereby it is adapted to receive the freshly cut end portion of the original, somewhat flat electric cord from the lamp, which cord has been cut through with a scissors close to the lamp base. The receptacle also has a manually operable lever which is adapted to force the said cut end of the appliance cord laterally against the prongs, causing the latter to pierce the insulation of the appliance cord and to make electrical connections thereto. The switch of the special receptacle has a time delay device which delays the shutoff of the lamp. When the user switches off the lamp, a delay of several moments is experienced before circuit is opened.，下面是Electric lamp replacement cord with delay action switch专利的具体信息内容。

权利要求

1. A replacement electric cord for small lamps, comprising in combination: a. a length of two-conductor electric cord, b. a two-prong electric plug affixed to one end of said electric cord and having prong-type contacts electrically connected respectively to the conductors of the electric cord, c. an electric receptacle fitting attached to the other end of the electric cord, said receptacle fitting having a socket of substantially oblong cross-sectional configuration for receiving the cut end portion of a similar section cord of the lamp, d. said receptacle fitting having a pair of sharp prongs disposed at the inner end of the socket and electrically connected respectively to the conductors of said electric cord, and e. manually operable means carried by the receptacle fitting and adapted to force laterally against the sharp prongs the end portion of said cut electric cord of said lamp when said lamp cord is inserted in said socket, whereby the sharp prongs pierce the insulation of the inserted lamp cord and make electrical contact to the conductors thereof, f. switch means carried by said receptacle fitting, g. connections between said switch means and the electric cord and a prong of the receptacle fitting, for controlling the electrical circuit of the lamp, h. a delay device to effect delayed opEning of the electrical circuit of said switch means when the latter is actuated to open the lamp circuit.

2. A replacement electric cord as defined in claim 1, wherein: a. said switch means comprises an upstanding pushbutton and an electrical contact actuated by the pushbutton, and b. a base carried by the receptacle fitting, adapted to rest on a table surface adjacent the lamp, thereby to facilitate actuation of the pushbutton.

3. A replacement electric cord as defined in claim 2, and further including: a. cooperable releasable latch means on the pushbutton and receptacle fitting, for maintaining the pushbutton in a depressed position, b. means biasing the pushbutton to a raised, nondepressed position on the receptacle fitting, c. said switch means including a second electrical contact cooperable with the first-mentioned electrical contact, d. said delay device comprising a suction cup connected with said pushbutton and engageable with said second electrical contact to restrict opening movement of the pushbutton.

4. A replacement electric cord as defined in claim 3, wherein: a. said first- and second-mentioned electrical contacts being resilient and movable in like, opposite directions.

5. A replacement electric cord as defined in claim 4, wherein: a. the first-mentioned electrical contact is stiffer and stronger than the second-mentioned contact, b. said suction cup tying together and causing simultaneous movement of the resilient contacts in the same directions during opening movement of the pushbutton, c. said contacts being biased in opposite directions, d. said suction cup eventually effecting release of the second-mentioned contact to enable the latter to return to its initial position under its bias.

6. A replacement electric cord as defined in claim 3, and further including: a. an adjusting screw threaded into said pushbutton and adjustable axially with respect thereto, b. said screw changing the relative positions of the pushbutton and first-mentioned electrical contact, c. said suction cup being carried by said first-mentioned electrical contact.

7. A replacement electric cord as defined in claim 5, and further including: a. an adjusting screw threaded into said pushbutton and adjustable axially with respect thereto, b. said screw changing the relative positions of the pushbutton and first-mentioned electrical contact, c. said suction cup being carried by said first-mentioned electrical contact.

8. A delay-off electric switch comprising, in combination: a. a pair of movable cooperable electrically conducting leaf springs disposed in spaced parallel insulated relation and constituting switch parts adapted to close and open a circuit by respectively engaging and disengaging each other, and b. means causing simultaneous similar movements of said leaf springs when engaged, for delaying the disengagement thereof when one spring is moved in a direction away from the other, said means including a suction cup on one spring, acting on the other to hold the leaf springs together for a predetermined time after the application of a separating force thereto.

9. A delay-off electric switch as in claim 8, and further including: a. adjustment means for effecting initially either a greater or a lesser vacuum as produced by the suction cup, to cause either a greater or a lesser delay to be effected thereby.

10. A delay-off electric switch as in claim 9, wherein: a. the adjustment means comprises a turnable screw connected to cause either a greater or a lesser flattening of the suction cup when it is initially made operative.

11. An electric switch as in claim 8, in combination with: a. an electrical receptacle fitting in which the leaf springs are mounted and carried, b. said receptacle fitting having a socket of substantially oblong cross-sectional configuration for receiving the cut end portion of a similar section Cord of a lamp, c. said receptacle fitting having a pair of sharp prongs disposed at the inner end of the socket and one of said sharp prongs being electrically connected to one of said leaf springs, and d. manually operable means carried by the receptacle fitting and adapted to force laterally against the sharp prongs the end portion of said cut electric cord of said lamp when said lamp cord is inserted in said socket, whereby the sharp prongs pierce the insulation of the inserted lamp cord and make electrical contact to the conductors thereof.

12. An electric switch as in claim 8, in combination with: a. an electric fitting comprising a housing in which the leaf springs are mounted, b. said housing having a socket for receiving the cutoff end of a lamp cord, c. connection means connected to one of said leaf springs and adapted to be forced into contact with a conductor of the lamp cord when inserted in said socket, and d. manually operable means for rendering operative said connection means to effect said contact with said conductor.

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Electric lamp replacement cord with delay action switch

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