US4180851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilated lamp guard
Assignee: The Huntington Library, Art Museum, and Botanical Gardens
•
Filing: 1977-10-31
•
Granted: 1979-12-25
•
Expires: 1997-10-31
Abstract
Abstract There is provided an improved lamp bulb guard having a circular tubular body portion, an inwardly flared portion and a circular tubular neck portion. Circumferentially spaced ventilating towers are provided. Each tower has a top portion, a front wall portion, and side wall portions. Vertically extending slots are provided, and each slot is protected by a baffle located radially inwardly thereof.
Inventors
- 👤 John E. Ericson, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:58
CPC Classifications
F; F21; F21V; F21V29/00; F21V29/50; F21V29/502; F21V29/507; F21V15/00; F21V15/01; F21V17/00; F21V17/06; F21V29/70; F21V29/83; F21V3/00; F21V3/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
196 words
In a lamp bulb guard having a generally cylindrical, hollow body adapted to enshroud a lamp bulb therein to protect said bulb from contact with liquid and solid objects, said hollow body including an inwardly flared portion terminating in an axially extending generally circular tubular neck portion adapted to circumvallate an electrical socket for said lamp bulb, and means for attaching said neck portion to the electrical socket, the improvement which comprises a plurality of circumferentially spaced ventilating towers projecting from said flared portion, each of said towers including a generally radially extending top portion, a front wall portion extending between the top portion and said hollow body, and side wall portions extending between said top and portion and said inwardly flared portion, at least one axially extending slot in each of said towers to provide for ventilation of said lamp bulb guard when in use, and an axially extending baffle adjacent said at least one slot and positioned within said tower near but radially inwardly of said front wall portion, said baffle having an axial length greater than the axial length of said slot, and a width less than the circumferential width of said tower.
Claim 2
Dependent Claim
196 words
In a lamp bulb guard having a generally cylindrical, hollow body adapted to enshroud a lamp bulb therein to protect said bulb from contact with liquid and solid objects, said hollow body including an inwardly flared portion terminating in an axially extending generally circular tubular neck portion adapted to circumvallate an electrical socket for said lamp bulb, and means for attaching said neck portion to the electrical socket, the improvement which comprises a plurality of circumferentially spaced ventilating towers projecting from said flared portion, each of said towers including a generally radially extending top portion, a front wall portion extending between the top portion and said hollow body, and side wall portions extending between said top and portion and said inwardly flared portion, at least one axially extending slot in each of said towers to provide for ventilation of said lamp bulb guard when in use, and an axially extending baffle adjacent said at least one slot and positioned within said tower near but radially inwardly of said front wall portion, said baffle having an axial length greater than the axial length of said slot, and a width less than the circumferential width of said tower.
Claim 3
Dependent Claim
25 words
A lamp bulb guard in accordance with claim 1 wherein said baffle is axially tapered in a direction away from the top of said tower.
Claim 4
Dependent Claim
19 words
A lamp bulb guard in accordance with claim 1 wherein said ventilating towers are circumferentially spaced at 120° intervals.
Claim 5
Dependent Claim
22 words
A lamp bulb guard in accordance with claim 1 wherein each of said ventilating towers is provided with two axially extending slots.
Claim 6
Dependent Claim
39 words
A lamp bulb guard in accordance with claim 4 wherein said slots are located between the radially inner face of the front portion of said tower and the radially outer edge of each of said side wall portions, respectively.
Claim 7
Dependent Claim
31 words
A lamp bulb guard in accordance with claim 5 wherein said baffles adjacent each of said slots, respectively, in a given tower are circumferentially spaced for the entire axial extent thereof.
Claim 8
Dependent Claim
31 words
A lamp bulb guard in accordance with claim 1 in which the included angle between the top portion and the front portion of each of said towers is less than 90°.
Claim 9
Dependent Claim
39 words
A lamp bulb guard in accordance with claim 6 in which the baffles depend from the top of each of said towers and are joined respectively along one axially extending marginal edge thereof to the adjacent side wall portion.
References Cited (Backward Citations)
US1430354A
Cited
US2878371A
Cited
US2945946A
Cited
US3119567A
Cited
US3609348A
Cited
US3767913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-24 | 1983-06-25 | 1983-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-24 | 1987-06-25 | 1987-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-24 | 1991-06-25 | 1991-12-25 | $7700.00 | Window Closed / Lapsed |