Seal for a joint or juncture – Seal between fixed parts or static contact against... – Contact seal for other than internal combustion engine – or...
Reexamination Certificate
1999-03-15
2001-03-20
Knight, Anthony (Department: 3626)
Seal for a joint or juncture
Seal between fixed parts or static contact against...
Contact seal for other than internal combustion engine, or...
C277S637000, C277S906000
Reexamination Certificate
active
06203025
ABSTRACT:
The invention relates to a seal member and, in particular, it concerns a longitudinal seal in the form of a strip member for sealing a gap between adjacent elongate structures.
The embodiment of the invention, which will be described hereinafter, was conceived as a solution to a problem of providing a seal between jet pipe liner segments of an afterburning gas turbine propulsion engine. However, the invention may be found useful in any situation where a seal is required to seal an elongate gap between adjacent structures which may be subject to a degree of limited relative movement.
According to the present invention there is provided a longitudinal seal in the form of a strip member having two longitudinal edge portions either side of a long compliant section comprising at least one lengthwise extending corrugation of sufficient flexibility to permit a degree of limited relative movement between the edge portions.
According to the preferred form of the invention the strip member is pleated in a lengthwise direction to form the two edge with the corrugated section lying between them. Preferably the pleat is of the kind known as a box pleat.
The invention will now be described in more detail with reference, by way of example, to the accompanying drawings of a preferred form of the invention, in which:
FIG. 1
is a detail of a perspective view, partly sectioned, of two adjacent jet pipe liner segments and the inter-segment seal under cold assembly conditions, and
FIG. 2
is a similar view of the arrangement of
FIG. 1
under typical operating conditions in which the adjacent segments are mutually offset.
REFERENCES:
patent: 3285615 (1966-11-01), Trbovich
patent: 3713660 (1973-01-01), Luthe
patent: 5738490 (1998-04-01), Pizza
patent: 1 600 966 (1981-10-01), None
patent: 2 153 030 (1985-08-01), None
patent: 2 240 822 (1991-08-01), None
Knight Anthony
Oliff & Berridg,e PLC
Peavey Enoch E.
Rolls-Royce plc
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