US4246455A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chain pull sockets
Assignee: Individual
•
Filing: 1979-06-21
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Granted: 1981-01-20
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Expires: 1999-06-21
Abstract
Abstract An electric light chain pull socket has an insulator body having two side members supporting an insulator wheel, one flange of which has a contact plate with alternate conductor portion and insulator portion spaced thereon, removable contact conductor members to selectively make or break the circuit by contact with the conductor portion or insulator portion of the contact plate on the flange of the chain pull insulator wheel; and, a chain pull mechanism to rotate the insulator wheel to a predetermined position, and a removable return spring for said chain of said chain pull mechanism.
Inventors
- 👤 Richard L. Pillsbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:31
CPC Classifications
H; H01; H01H; H01H17/00; H01H17/16; H01H17/18; H01H17/22
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
147 words
In a pull switch for lamp sockets, the combination of an insulator body formed of two parts, a rotatable pulley wheel mounted between said two parts of said insulator body, said pulley wheel having a central portion and two side flanges, ratchet teeth provided on the central portion of said rotatable pulley wheel, a pull chain having an enlarged bead adapted to engage said ratchet teeth to rotate said pulley wheel, a return spring for retracting said chain, a contact plate mounted on one of said flanges of said rotatable pulley wheel, alternating insulator portions and contact portions on said contact plate, removable conductor points mounted to one of the two parts of said insulator body and positioned to contact the conductor plate and alternatively make and break the electric circuit upon the conductor points being to contact with said central portions and said insulator portions respectively.
Claim 2
Dependent Claim
147 words
In a pull switch for lamp sockets, the combination of an insulator body formed of two parts, a rotatable pulley wheel mounted between said two parts of said insulator body, said pulley wheel having a central portion and two side flanges, ratchet teeth provided on the central portion of said rotatable pulley wheel, a pull chain having an enlarged bead adapted to engage said ratchet teeth to rotate said pulley wheel, a return spring for retracting said chain, a contact plate mounted on one of said flanges of said rotatable pulley wheel, alternating insulator portions and contact portions on said contact plate, removable conductor points mounted to one of the two parts of said insulator body and positioned to contact the conductor plate and alternatively make and break the electric circuit upon the conductor points being to contact with said central portions and said insulator portions respectively.
Claim 3
Dependent Claim
26 words
The device of claim 1 together with a second conductor mounted to the other of said two parts of the insulator body to complete the circuit.
Claim 4
Dependent Claim
20 words
The device of claim 1 together with an insulated housing member to receive said insulator body and the attachments thereto.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-01-20 | 1984-07-21 | 1985-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-01-20 | 1988-07-21 | 1989-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-01-20 | 1992-07-21 | 1993-01-20 | $7700.00 | Window Closed / Lapsed |