Patent US3679772A successfully refreshed from Google Patents.
US3836293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary piston internal combustion engine of trochoidal construction
Assignee: Daimler Benz AG
•
Filing: 1973-02-02
•
Granted: 1974-09-17
•
Expires: 1993-02-02
Abstract
Abstract A rotary piston internal combustion engine of trochoidal construction which consists essentially of lateral parts and at least of one housing casing, in case of multi-disk internal combustion engines, of one or several intermediate parts, provided with hollow spaces for the accommodation of the cooling medium in each housing part and with ribs arranged in the hollow spaces; the ribs and/or the inner walls of the housing parts, particularly of the housing casing are provided with turbulenceproducing projections, preferably within the area of the minor axis in the hot arc.
Inventors
- 👤 H Lamm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:28
CPC Classifications
F; F02; F02B; F02B55/00; F02B55/08; F02B55/10
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
104 words
An arrangement for a rotary piston internal combustion engine including at least one housing casing and lateral housing parts, the housing casing being provided with hollow spaces for the accommodation of a cooling medium the arrangement comprising: at least one first rib means disposed in the hollow space arranged parallel to the flow direction of the cooling medium, at least one second rib means disposed in the hollow space arranged at a predetermined angle to the flow direction of the cooling medium, and projection means provided on at least one of said first and second rib means for producing turbulence of the cooling medium.
Claim 2
Dependent Claim
104 words
An arrangement for a rotary piston internal combustion engine including at least one housing casing and lateral housing parts, the housing casing being provided with hollow spaces for the accommodation of a cooling medium the arrangement comprising: at least one first rib means disposed in the hollow space arranged parallel to the flow direction of the cooling medium, at least one second rib means disposed in the hollow space arranged at a predetermined angle to the flow direction of the cooling medium, and projection means provided on at least one of said first and second rib means for producing turbulence of the cooling medium.
Claim 3
Dependent Claim
32 words
A rotary piston internal combustion engine arrangement according to claim 1, wherein the housing casing includes inner walls, and wherein at least one of said inner walls is provided with projection means.
Claim 4
Dependent Claim
39 words
A rotary piston internal combustion engine arrangement according to claim 1, including a spark plug boss means projecting into a respective hollow space and wherein projection means are provided about the entire circumference of said spark plug boss means
Claim 5
Dependent Claim
55 words
A rotary piston internal combustion engine arrangement according to claim 1, wherein said housing casing includes a running surface and inner wall, and wherein at least one of said inner walls adjoins said running surface, projection means being disposed on said last-mentioned inner wall and extending in a direction facing away from said running surface.
Claim 6
Dependent Claim
19 words
A rotary piston internal combustion engine arrangement according to claim 1, wherein said projection means are of noselike construction.
Claim 7
Dependent Claim
34 words
A rotary piston internal combustion engine arrangement according to claim 5, wherein said turbulence-producing projection means are arranged at least within the area of the minor axis in the hot arc of the engine.
Claim 8
Dependent Claim
32 words
A rotary piston internal combustion engine arrangement according to claim 1, wherein said first and second rib means are of elongated configuration, said projection means being provided along the longitudinal sides thereof.
Claim 9
Dependent Claim
26 words
A rotary piston internal combustion engine arrangement according to claim 7, wherein said first rib means extends in the longitudinal direction of a respective hollow space.
Claim 10
Dependent Claim
40 words
A rotary piston internal combustion engine arrangement according to claim 8, wherein said first rib means are disposed substantially centrally in the hollow space said second rib means being disposed laterally of the center longitudinal plane of the hollow space.
Claim 11
Dependent Claim
32 words
A rotary piston internal combustion engine arrangement according to claim 1, wherein said projection means includes a plurality of spaced noselike projections provided on both of said first and second rib means.
Claim 12
Dependent Claim
39 words
A rotary piston internal combustion engine arrangement according to claim 10, wherein said housing casing includes a pair of spaced lateral inner walls, and wherein spaced projection means are disposed on at least one of said lateral inner walls.
Claim 13
Dependent Claim
38 words
A rotary piston internal combustion engine arrangement according to claim 1, wherein said housing casing includes a pair of spaced lateral inner walls, and wherein projection means are disposed on at least one of said lateral inner walls.
Claim 14
Dependent Claim
23 words
A rotary piston internal combustion engine arrangement according to claim 12, wherein projection means are disposed on both of said lateral inner walls.
Claim 15
Dependent Claim
38 words
A rotary piston internal combustion engine arrangement according to claim 13, wherein said housing casing includes a running surface and an inner wall adjoining said running surface, and wherein projection means are disposed on said last-mentioned inner wall.
Claim 16
Dependent Claim
23 words
A rotary piston internal combustIon engine arrangement according to claim 13, wherein projection means are disposed on both of said lateral inner walls.
Claim 17
Dependent Claim
38 words
A rotary piston internal combustion engine arrangement according to claim 15, wherein said housing casing includes a running surface and an inner wall adjoining said running surface, and wherein projection means are disposed on said last-mentioned inner wall.
Claim 18
Dependent Claim
34 words
A rotary piston internal combustion engine arrangement according to claim 1, wherein said turbulence-producing projection means are arranged at least within the area of the minor axis in the hot arc of the engine.
Claim 19
Dependent Claim
18 words
A rotary piston internal combustion engine arrangement according to claim 17, wherein the engine is of trochoidal construction.
Claim 20
Dependent Claim
51 words
A rotary piston internal combustion engine arrangement according to claim 17, wherein the internal combustion engine is of multi-disk construction, and wherein at least one intermediate housing part is disposed between two adjoining housing casing, each of said housing casings including a hollow space for the accommodation of a cooling medium.
Claim 21
Dependent Claim
32 words
A rotary piston internal combustion engine according to claim 17, wherein the housing casing includes inner walls, and wherein at least one of said inner walls is provided with turbulence-producing projection means.
Claim 22
Dependent Claim
19 words
A rotary piston internal combustion engine arrangement according to claim 20, wherein said projection means are of nose-like construction.
Claim 23
Dependent Claim
39 words
A rotary piston internal combustion engine arrangement according to claim 21, including a spark plug boss means projecting into a respective hollow space, and wherein projection means are provided about the entire circumference of said spark plug boss means.
Claim 24
Dependent Claim
32 words
A rotary piston internal combustion engine arrangement according to claim 22, wherein said first and second rib means are of elongated configuration, said projection means being provided along the longitudinal sides thereof.
Claim 25
Dependent Claim
26 words
A rotary piston internal combustion engine arrangement according to claim 23, wherein said first rib means extends in the longitudinal direction of a respective hollow space.
Claim 26
Dependent Claim
40 words
A rotary piston internal combustion engine arrangement according to claim 24, wherein said first rib means are disposed substantially centrally in the hollow space, said second rib means being disposed laterally of the center longitudinal plane of the hollow space.
Claim 27
Dependent Claim
57 words
A rotary piston internal combustion engine arrangement according to claim 25, wherein said housing casing includes a running surface, and wherein said at least one of said inner walls of said housing casing adjoins said running surface, projection means being disposed on said last mentioned inner wall and extending in a direction away from said running surface.
Claim 28
Dependent Claim
38 words
A rotary piston internal combustion engine arrangement according to claim 26, wherein said housing casing includes a pair of spaced lateral inner walls, and wherein projection means are disposed on at least one of said lateral inner walls.
Claim 29
Dependent Claim
23 words
A rotary piston internal combustion engine arrangement according to claim 27, wherein projection means are disposed on both of said lateral inner walls.
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) | 1977-09-16 | 1978-03-18 | 1978-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-16 | 1982-03-18 | 1982-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-16 | 1986-03-18 | 1986-09-17 | $7700.00 | Window Closed / Lapsed |