US4379574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiator assembly (bayonet lock)
Assignee: MCCORD HEAT TRANSFER Corp A DE CORP
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Filing: 1980-12-22
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Granted: 1983-04-12
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Expires: 2000-12-22
Abstract
Abstract A tank assembly utilized in a heat exchanger such as a radiator and the method of connecting a cylindrical spout such as a filler tube in an opening in the tank wall. An opening is formed in the tank wall with a skirt extending inwardly from the tank wall. A plurality of cam/lock sections are formed at the lower extremity of the skirt with each cam/lock section having a cam surface leading from a receiving end to a locking recess, the opposite wall of which is extended to define a stop. A plurality of radial slots are formed in the tank wall to extend radially of the skirt adjacent the receiving ends of the cam surfaces. A spout is formed having a radially extending shoulder and a lower portion with a plurality of radially extending tabs. An annular seal recess is disposed in the tank wall for receiving a seal. The spout is inserted into the opening by passing the tabs through the slots to engage the tabs with the receiving end of the cam surfaces and the spout is rotated to move the tabs along the cam surfaces until they snap into position in the locking recesses to compress the seal between the shoulder in the spout and the seal recess.
Inventors
- 👤 Ludwig Leichtl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:58
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/0246; F28F9/0248; F16; F16L; F16L41/00; F16L41/08; F16L41/082; F01; F01M; F01M11/00; F01M11/04; F01M2011/0491; F28F2275/00; F28F2275/14; F28F2275/146
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
240 words
A tank assembly of the type utilized in a heat exchanger such as a radiator, said assembly comprising; a tank wall having an opening, a cylindrical spout extending from said opening in said tank wall, said spout having a lower portion extending into said opening, said lower portion having at least two radially extending tabs, said opening having a skirt extending inwardly from said tank wall, said skirt having at least two cam/lock sections with each cam/lock section including a cam surface leading from a receiving end to a locking recess, said cam surface increasing in distance from said tank wall in the direction from said receiving end thereof to said locking recess, said spout and said tank wall having radially extending overlying portions, and sealing means disposed between said overlying portions, said tabs being disposed in said locking recesses to compress said sealing means between said overlying portions and retaining said spout in said opening, said overlying portion of said tank wall defining an annular seal recess to define an annular shoulder for radially retaining said sealing means in said recess, said spout including an upper cylindrical portion of a greater diameter than said lower portion thereof, said overlying portion of said spout comprising a radially extending shoulder integrally interconnecting said upper and lower portions, the outer diameter of said upper portion of said spout being no greater than the diameter of said annular shoulder of said seal recess.
Claim 2
Dependent Claim
240 words
A tank assembly of the type utilized in a heat exchanger such as a radiator, said assembly comprising; a tank wall having an opening, a cylindrical spout extending from said opening in said tank wall, said spout having a lower portion extending into said opening, said lower portion having at least two radially extending tabs, said opening having a skirt extending inwardly from said tank wall, said skirt having at least two cam/lock sections with each cam/lock section including a cam surface leading from a receiving end to a locking recess, said cam surface increasing in distance from said tank wall in the direction from said receiving end thereof to said locking recess, said spout and said tank wall having radially extending overlying portions, and sealing means disposed between said overlying portions, said tabs being disposed in said locking recesses to compress said sealing means between said overlying portions and retaining said spout in said opening, said overlying portion of said tank wall defining an annular seal recess to define an annular shoulder for radially retaining said sealing means in said recess, said spout including an upper cylindrical portion of a greater diameter than said lower portion thereof, said overlying portion of said spout comprising a radially extending shoulder integrally interconnecting said upper and lower portions, the outer diameter of said upper portion of said spout being no greater than the diameter of said annular shoulder of said seal recess.
Claim 3
Dependent Claim
46 words
An assembly as set forth in claim 1 wherein said overlying portion of said tank wall includes at least two slots extending radially of said skirt adjacent said receiving ends of said cam surfaces for allowing said tabs to pass therethrough and engage said cam surfaces.
Claim 4
Dependent Claim
43 words
An assembly as set forth in claim 2 wherein each of said tabs are rectangular in cross section and each of said locking recesses has a bottom and parallel side edges which are perpendicular to the bottom for receiving and retaining said tabs.
Claim 5
Dependent Claim
30 words
An assembly as set forth in claim 3 including a stop adjacent each locking recess for preventing said tabs from moving over said cam surfaces and past said locking recesses.
Claim 6
Dependent Claim
24 words
An assembly as set forth in claim 1 including an annular sealing ridge extending upwardly in said seal recess and compressing said sealing means.
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) | 1986-04-11 | 1986-10-11 | 1987-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-11 | 1990-10-11 | 1991-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-11 | 1994-10-11 | 1995-04-12 | $7700.00 | Window Closed / Lapsed |