US4448185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air cooled door handle for heaters
Assignee: BUCK STOVE Corp A CORP OF
•
Filing: 1979-01-04
•
Granted: 1984-05-15
•
Expires: 1999-01-04
Abstract
Abstract The door handle of a heating unit is cooled by providing a duct traversing the interior of the handle from exterior of the firebox of the heating unit to the interior of the firebox. The induced flow cools the handle and provides cool air in the firebox to trap and maintain the hot gasses closer to the fire for a more complete combustion. An open, ellipsoid, spiral coil surrounds the grip of the handle.
Inventors
- 👤 Carrol E. Buckner
- 👤 C. Glenn Cook
- 👤 Thomas J. Kane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:31
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/191; F24C; F24C15/00; F24C15/02; F24C15/024
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
83 words
In a heating unit having a firebox, a flue port, an access opening in a front, closure means for covering said access opening and a handle mounted to said closure means for manipulating said closure means to cover and uncover said access opening, the improvement being said handle comprising a duct means interior to said handle for supplying air from the exterior of said firebox to the interior of said firebox, through said duct means, when said closure means covers said access opening.
Claim 2
Dependent Claim
83 words
In a heating unit having a firebox, a flue port, an access opening in a front, closure means for covering said access opening and a handle mounted to said closure means for manipulating said closure means to cover and uncover said access opening, the improvement being said handle comprising a duct means interior to said handle for supplying air from the exterior of said firebox to the interior of said firebox, through said duct means, when said closure means covers said access opening.
Claim 3
Dependent Claim
28 words
The heating unit according to claim 1 wherein said handle is L-shaped and has a circular crossection and said duct means is a central bore of said handle.
Claim 4
Dependent Claim
28 words
The heating unit according to claim 2 wherein said handle includes a wire coiled around the portion of the L-shape parallel to the plane of said closure means.
Claim 5
Dependent Claim
16 words
The heating unit according to claim 3 wherein said wire is coiled into substantially an ellipsoid.
Claim 6
Dependent Claim
26 words
The heating unit according to claim 1 wherein said closure means includes a pair of doors and each door includes a handle having a duct means.
Claim 7
Dependent Claim
60 words
The heating unit according to claim 1, including a bushing having an internal threaded portion traversing an aperture in said closure means, said handle including a threaded portion mating with the bushing's thread portion and extending beyond the bushing, and a latch secured to the extended portion of said handle for preventing said handle from being unscrewed from said bushing.
Claim 8
Dependent Claim
20 words
The heating unit according to claim 6 wherein said bushing includes a collar engaging the exterior of said closure means.
Claim 9
Dependent Claim
31 words
The heating unit according to claim 1 wherein said handle is mounted substantially above a firebed in said firebox and said closure means includes adjustable opening at or below said firebed.
Claim 10
Dependent Claim
59 words
A door for a heating unit comprising: a body capable of covering an access opening of a heating unit; a handle mounted to said body; and a duct means interior to and traversing the length of said handle for providing fluid communication from one face of said body to the other face through said handle to cool said handle.
Claim 11
Dependent Claim
59 words
A door for a heating unit comprising: a body capable of covering an access opening of a heating unit; a handle mounted to said body; and a duct means interior to and traversing the length of said handle for providing fluid communication from one face of said body to the other face through said handle to cool said handle.
Claim 12
Dependent Claim
27 words
The door according to claim 9 wherein the handle is L-shaped and has a circular cross-section and said duct means is a central bore of said handle.
Claim 13
Dependent Claim
27 words
The door according to claim 10 wherein said handle includes a wire coiled around the portion of the L-shape parallel to the plane of said closure means.
Claim 14
Dependent Claim
15 words
The door according to claim 11 wherein said wire is coiled into substantially an ellipsoid.
Claim 15
Dependent Claim
23 words
The door according to claim 10 wherein said handle is rotatably mounted to said door and includes a latch secured to said handle.
Claim 16
Dependent Claim
15 words
The door according to claim 9 wherein said handle is fixedly mounted to said door.
Claim 17
Dependent Claim
18 words
The door according to claim 9 including an adjustable opening in said door adjacent to the bottom thereof.
Claim 18
Dependent Claim
21 words
The door according to claim 15 wherein a grip portion of said adjustable opening is coated with a silicon thermal insulator.
Claim 19
Dependent Claim
26 words
The door according to claim 9 including a wire coiled around the grip of said handle and said wire is coated with a silicon thermal insulator.
Claim 20
Independent Claim
44 words
The method of cooling a handle of a door covering the access opening to the fire box of a heating unit comprising providing a duct interior said handle fluidically communicating the exterior of said firebox with the interior of said firebox through said handle.
Claim 21
Independent Claim
44 words
The method of cooling a handle of a door covering the access opening to the fire box of a heating unit comprising providing a duct interior said handle fluidically communicating the exterior of said firebox with the interior of said firebox through said handle.
Claim 22
Dependent Claim
22 words
The method of cooling a handle according to claim 18 including providing an open spiral around and substantially spaced from said handle.
Claim 23
Dependent Claim
20 words
The method of cooling a handle according to claim 19 wherein said spiral is formed to have an ellipsoid configuration.
References Cited (Backward Citations)
US312940A
Cited
US373181A
Cited
US720626A
Cited
US1916848A
Cited
US2505312A
Cited
US2578230A
Cited
US3409003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-15 | 1987-11-14 | 1988-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-15 | 1991-11-14 | 1992-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-15 | 1995-11-14 | 1996-05-15 | $7700.00 | Window Closed / Lapsed |