US3745630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preassembly and assembly of a multipartite seal
Assignee: Daimler Benz AG
•
Filing: 1971-12-14
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Granted: 1973-07-17
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Expires: 1991-12-14
Abstract
Abstract A method for preassembling and assembling a multi-partite sealing bar and associated spring for the piston of a rotary piston engine provided with a housing casing and lateral disks in which the parts of the sealing bar are preassembled, utilizing an adhesive dissolving under heat in such a manner that the over-all length of the sealing bar is slightly larger than the width of the housing casing; the sealing bar is then reduced in its length to the width of the housing casing when the lateral disks of the engine are assembled onto the housing casing which cause at least some of the bonded connections to be broken.
Inventors
- 👤 W Bensinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:04
CPC Classifications
F; F01; F01C; F01C19/00; F01C19/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49274; Y10T29/4981; Y10T29/49826; Y10T29/4984
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
113 words
A method for the preassembly and assembly of a multi-partite sealing bar and of an associated spring for the piston of a rotary piston engine provided with a housing casing and lateral disks, comprising the steps of adhesively bonding together the parts of the sealing bar by preassembling the same while forming an over-all length of the sealing bar which is larger than the width of the housing casing, and thereupon reducing the length of the sealing bar, during the assembly of the engine when mounting the lateral disks onto the housing casing which forcibly causes the sealing bar to be reduced to a dimension corresponding to the width of the housing casing.
Claim 2
Independent Claim
113 words
A method for the preassembly and assembly of a multi-partite sealing bar and of an associated spring for the piston of a rotary piston engine provided with a housing casing and lateral disks, comprising the steps of adhesively bonding together the parts of the sealing bar by preassembling the same while forming an over-all length of the sealing bar which is larger than the width of the housing casing, and thereupon reducing the length of the sealing bar, during the assembly of the engine when mounting the lateral disks onto the housing casing which forcibly causes the sealing bar to be reduced to a dimension corresponding to the width of the housing casing.
Claim 3
Dependent Claim
29 words
A method according to claim 1, characterized in that the spring during the preassembly is connected to the seAling bar offset to one side in relation to its length.
Claim 4
Dependent Claim
36 words
A method according to claim 2, characterized in that the parts of the sealing bar to be assembled include a center portion and two lateral portions adjoining the center portion by way of complementary inclined surfaces.
Claim 5
Dependent Claim
36 words
A method according to claim 1, characterized in that the parts of the sealing bar to be assembled include a center portion and two lateral portions adjoining the center portion by way of complementary inclined surfaces.
References Cited (Backward Citations)
US3180561A
Cited
US3173406A
Cited
US3268157A
Cited
US3263912A
Cited
US3286912A
Cited
US3400691A
Cited
US3685922A
Cited
US3556695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |