Document V75BV742EvQdB4ELRGK4zpNq
PLAINTIFF'S EXHIBIT MAR-412
:N i
M&B.
004574
RE-2397 REV. 1/65
MAREMONT PRODUCT ENGINEERING DEPARTMENT ENGINEERING BULLETIN
Product:
5ubi#et:
Reference:
Friction Materials MANUFACTURING AND INSPECTION DIMENSIONAL SPECIFICATIONS
Bulletin No.
Supplomont No,
T5te July 13,
Pobo
1 of
Suportodins No.
19b5
Rigid Lining
Flexible Rigid
Flexible
Lining
Segments Segments
1. Thickness range
of lining classification
.310 Max. .310 Max. .310 to .600
.310 to .600
2. Length
* 3/32
3/32
3/32 3/32
3. Width Note #1
+ .000 - 1/32
+ .020 -.030
+.015
+ 015
4. Thickness (After Grind)
+ .005
+ .006
+.005 -.015
+ .005 -.015
5. Radius-shoe
+ .000 - 1/8'
+ 1/8
6. Countersink depth Note #2
.065 to .080
.045 to .055
.090 to .090 to
.105
.105
7. Twist throughout .030 Max. .045 Max. length
8. Squareness of ends to sides
+ 1/32
+ 1/32
+ 1/32 + 1/32
9. Parallel of
+ 1/32
sides Note #3
+ 1/32
+.003
+ 1/32
10. Drill and
+ .005
countersink hole -.015
diameter Note #4
+.005 -.015
+ .005 -.015
11. Groove width
1^32 to
/ .^
12. Material between .125
inside arc and
+ .010
bottom of groove
^ -- --'*
v
,
V*"
O'
+.005 -.015
\ ." '^
Rigid Blocks .600 Min.
1/16 + 1/32
-.015 to -.030 + .000 - 1/32 \ 1/8 +.010
+ 1/32
+ .001
+.005 -.015
Distribution:
J. Kodv G. R. Miller D. Baxter
E. Dix R. Stahl A. 7.1 eIke
Approved By:
J. Vincent-----------------------R- Wvatt________________ _
MAR
004575
RE-2397 REV. t/SS
MAREMONT PRODUCT ENGINEERING DEPARTMENT ENGINEERING BULLETIN
Product: subject:
Reference:
Friction Materials MANUFACTURING AND INSPECTION DIMENSIONAL SPECIFICATIONS
Bulletin No.
.
6m
Supplement No.
Dot. July 13. 1965
.fW 2 of
3
Superset!}na No.
Rigid Lining
13. Rockwell hardness Min. 80 low friction-drill .Note #5
14. Rockwell
Min. 60
ha rdness-medium
and high friction
drill Note #5
Flexible Lining --------
--------
Rigid
Flexible Rigid
Segments Segments Blocks
____
15- Tensile-low friction drill Note #6
Min. 250 -------- - ..
pounds
,
.'- V
16. Tensile-high and medium
friction drill
Note #6
Min. 200 --pounds
17. Bevel
3/8 +.000 -1/16
1/8" thickness remaining stock
3/8 +.000 35-l/2 35-l/2
-1/16
thickness thickness
1/8"
thickness
remaining
stock
35-1/2 thickness
NOTES:
1. Medium friction rigid lining is 1/16" narrower than nominal with same tolerance.
2. Material left between inside arc and bottom of countersunk hole.
3. Tolerance for rigid block is +.001 per inch of width rigid segment .003 per inch of width.
4. 3/8" (.375) countersink -.015 to .005/
5. Material with very low Rockwell values should be recured or close structure evaluation be made.
Distribution:
Issued By:
Approved By:
MAR
004576
RE-2397 REV. 1/85
MAREMONT PRODUCT ENGINEERING DEPARTMENT ENGINEERING BULLETIN
product: Tubjeet:
Reference:
Friotibh Materials
MANUFACTURING ANITInspection
DIMENSIONAL SPECIFICATIONS
Bulletin No. gQj
Supplement No.
05S Julv313. 1065
Pape 3 of
3
Supersedina No.
$. Material vrith tensile 50 lbs. less than requirement for drilled stock Is to be used for bonding segments. 7. Countersink tip angle Is 1550 to 1650.
^\
^ V-*-
V
Distribution:
Issued By:
Approved By:
MAR
004577