Rail-mounting assembly
View Patent ↗A rail-mounting assembly has a generally rectangular base frame formed with a window and having a pair of diagonally opposite abutments at respective ends of the window and having downwardly and inwardly inclined faces. A top plate in the window has a lower face above a lower face of the frame, a pair of bosses projecting upward from the top plate and each juxtaposed with a respective one of the abutments and each having a downwardly and inwardly inclined face spacedly juxtaposed with the downwardly and inwardly inclined face of the respective abutment. A one-piece elastomeric body is bonded to and interposed between the inclined faces of the frame and of the top plate.
1. A rail-mounting assembly comprising:
a generally rectangular base frame with one pair of corners truncated at respective bevels and provided with openings enabling the frame to be affixed on a support, the frame being formed with a window bounded by a pair of parallel sides of the base frame, the frame having a pair of diagonally opposite abutments each disposed adjacent a respective one of the truncated corners and at a respective end of the window, the abutments having downwardly and inwardly inclined faces;
a top plate received in the window and having a lower face above a lower face of the frame, a pair of bosses projecting upward from the top plate and each juxtaposed with a respective one of the abutments and each having a downwardly and inwardly inclined face spacedly juxtaposed with a respective one of the downwardly and inwardly inclined faces of the respective abutment; and
a one-piece body of an elastomeric material bonded to and interposed between the inclined faces of the frame and of the top plate, the body extending down into the window and forming at least one downwardly projecting pad in the window and between the lower face of the frame and the lower face of the top plate.
2. The rail-mounting assembly defined in claim 1 wherein the downwardly and inwardly inclined faces include an angle of 42°±25° with the vertical.
3. The rail-mounting assembly defined in claim 2 wherein the elastomeric body extends unitarily over the sides of the frame.
4. The rail-mounting assembly defined in claim 2 wherein the elastomeric body extends unitarily over the abutments.
5. The rail-mounting assembly defined in claim 2 wherein the elastomeric body extends over a respective end of the top plate.
6. The rail-mounting assembly defined in claim 1 wherein the pad is received with all-around space in the window.
7. The rail-mounting assembly defined in claim 1 wherein the pad has a lower face substantially coplanar with the lower face of the frame.
8. The rail-mounting assembly defined in claim 1 wherein the elastomeric body forms a plurality of downwardly projecting pads in the window.
9. The rail-mounting assembly defined in claim 8 wherein the pads are circular, oval, rectangular or triangular.
10. The rail-mounting assembly defined in claim 1 wherein the elastomeric body forms a single pad of polygonal outline received all-around space in the window and having a lower pad face substantially coplanar with the lower face of the frame.
11. The rail-mounting assembly defined in claim 10 wherein the pad is generally parallelogrammatic.
12. The rail-mounting assembly defined in claim 2 wherein the angle is 42°±10°.
13. The rail-mounting assembly defined in claim 2 wherein the angle is 42°±5°.
14. The rail-mounting assembly defined in claim 2 wherein the angle is 42°±2°.