Stock material or miscellaneous articles – Structurally defined web or sheet – Fold at edge
Reexamination Certificate
2006-02-07
2006-02-07
Ryan, Patrick Joseph (Department: 1745)
Stock material or miscellaneous articles
Structurally defined web or sheet
Fold at edge
C428S068000, C428S071000, C428S074000, C428S075000, C428S174000, C428S192000, C428S920000, C428S921000, C029S513000, C029S462000
Reexamination Certificate
active
06994901
ABSTRACT:
An improved heat shield provides for reduced noise transmission of vehicular engine components is disclosed. The heat shield has three layers; a first sheet layer, a center insulation layer, and a second sheet layer. The insulation layer is positioned between the first and second sheet layers. The first sheet layer is defined by a variable shaped periphery that is folded over the periphery of the second sheet layer to form a hem having a variable length around the heat shield. The variable length serves to reduce uneven strain in the hem area experienced during crush forming the heat shield into the final shape. Further, the variable length of the hem also serves to alter the resonate frequency of the heat shield in specific areas to reduce vibration and improve acoustical properties.
REFERENCES:
patent: 4273836 (1981-06-01), Campbell et al.
patent: 4351292 (1982-09-01), Worthen et al.
patent: 5167060 (1992-12-01), Nawrocki et al.
patent: 5590524 (1997-01-01), Moore, III et al.
patent: 5958603 (1999-09-01), Ragland et al.
patent: 6052887 (2000-04-01), Dziadosz et al.
Boogemans Mark
Chen Colin C.
Matias Calin
Minkov Marsha A.
Moffat Ryan P.
Dana Corporation
Rhee Jane
Ryan Patrick Joseph
LandOfFree
Heat shield having a fold-over edge crimp with variable... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Heat shield having a fold-over edge crimp with variable..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heat shield having a fold-over edge crimp with variable... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3630966