Gravity actuated light socket and switch means

• US 4,104,492 A
• Filed: 09/23/1977
• Issued: 08/01/1978
• Est. Priority Date: 09/23/1977
• Status: Expired due to Term

• Current Assignee: Illinois Tool Works Inc.
• Original Assignee: Illinois Tool Works Inc.
• Inventors: Pliml, Frank V. Jr.
• Primary Examiner(s): Hall, George T.
• Application Number:
  US05/836,182
• Time in Patent Office: 312 Days
• Field of Search: 200/51.14, 200/61.52, 200/153 A, 200/150 A, 200/DIG. 29, 200/60
• US Class Current: 200/51.14
• CPC Class Codes: H01H 35/027 the inertia mass activating the switch mechanically, e.g. through a lever
• CPC Class Codes: Y10S 200/29 Ball

Abstract

A combined gravity operated light socket and switch including a base, fastening means extending from one side thereof and a dielectric housing extending from the other side, the housing being divided into two adjacent chambers. The first chamber is open-ended forming a light socket and the second chamber houses a switching mechanism. The switch includes a headed co-axial shaft extending between the chambers with the head acting as a contact in the base of the socket and the opposite end carrying a flat centrally flanged teeter-totter element supporting a rolling ball and arranged for predetermined angular movement upon angular shifting of the housing. The angular movement of the flat element is limited by stop means, one of which is a contact, thereby producing an on-off status depending on the angular placement of the unit.

Claims

1. A gravity actuated light socket and switch means including a dielectric light socket having a horizontal axis, means adapted for retaining said socket in mounted relation to an apertured panel fixed on a support member angularly moveable about a horizontal axis, multiple socket contact means for connection to and conveying a source of power to and from said socket, moveable switch contact means teeter-totter fashion intermediate its extremities on a horizontal shaft connected to one of said socket contact means, moveable weight means shiftable along said contact means in response to angular movement of said support member, stop means for controlling the angular shifting of said moveable switch contact means between a first angular disposition of said light socket and a second angular disposition, the second one of said stop means being a fixed contact connected to a power source and adapted to be touched by said moveable switch contact means when said light socket is placed in said second disposition by shifting of said moveable weight means, whereby power is supplied to said socket contacts.

2. A socket of the type claimed in claim 1 wherein said socket and switch are housed in a common plastic member of mating halves formed about a common axis, including an open ended socket chamber and an axially adjacent closed switch chamber, and snap engaging means for retention of said socket and switch to said panel.

3. A socket of the type claimed in claim 2 wherein one of said socket contacts is directly connected to one lead of a power source, the second socket contact being connected to said switch means, said second socket contact including a horizontally co-axially disposed shaft element passing between said two chambers and enlarged at one end within said socket to form said second socket contact and the other end portion forming said horizontal shaft.

4. A socket of the type claimed in claim 3 wherein said moveable switch contact includes a substantially flat centrally flanged metallic element mounted for rotation about said shaft between predetermined angular limits, one of said limits being defined by said fixed contact connected to a second lead to a power source.

5. A socket of the type claimed in claim 4 wherein said shiftable weight is a metallic ball rolling on said flat metallic element and adapted to act as an over-center action device as said socket is moved from one angular disposition to a second disposition to thereby insure pressure between said flat metallic element and said limits.

6. A socket of the type claimed in claim 5 wherein said switch chamber is cylindrical, said ball having a predetermined diameter and the spacing between the cylindrical wall of said switch chamber and said flat metallic element as it rotates on said shaft is sufficient to permit movement of said ball along a substantial portion of the length of said metallic element.

7. A socket of the type claimed in claim 6 wherein said socket-switch includes a base supporting said two chambers in a horizontal attitude, shroud means extending outwardly from said base from the opposite side of said chambers, lead means located within said shroud for connection to said power source.

8. A socket of the type claimed in claim 7 wherein said shroud means carries resilient and shouldered arm means extending toward said base for engagement with the rear side surface of said apertured panel engaged on the front side by said base.

9. A light socket and gravity operated switch member combination including a dielectric housing having a base, resilient snap fastening means extending outwardly from said base in one direction and a pair of adjacent horizontally disposed chambers extending outwardly in the opposite direction from said base, one of said chambers being an open ended socket and adapted to accept a light bulb base therein through said open end, fixed first and second socket contact means being disposed in the side wall and co-axially with the base of said socket chamber respectively, said second base socket contact means including a head conductive shaft extending between said first and second chambers with the head portion thereof being located in said socket chamber, a substantially flat teeter-totter type conductive member mounted on said shaft in said second chamber and carrying contact means at one end thereof, limit stops positioned within said second chamber for limiting the rotation of said flat member about said shaft, one of said limit stops being a fixed switch contact connected to one lead of a power source, a metallic ball riding on said flat member within said second switch chamber to ensure rotational movement of said member about said shaft during angular movement of said entire socket-switch combination to move the contact carried by said flat member into engagement with said fixed switch contact to supply power to said second base contact means, and a second lead of said power source connected to said first side wall socket contact means.

10. A socket-switch means of the type claimed in claim 9 wherein said housing base includes shroud means surrounding the connectors adapted to be associated with the power source leads.

11. A socket-switch member of the type claimed in claim 9 wherein the said second switch chamber is substantially cylindrical internally thereof, said ball has a predetermined diameter, the surface of said flat member at a predetermined angular relationship dependent on the relative position of the ball along the length thereof being positioned a distance from said cylindrical wall substantially identical to said predetermined diameter.