Shaping bodies
AssigneeCompany "A" (Foam) Limited
InventorsAldino Albertelli, Brian F. Pegg
Life of this patent
Estimating the term…
Abstract
A method of shaping a body, suitable for use in the building or furnishing industry, including: engaging a surface region of the body with a tool having a predetermined profile; effecting relative movement between the body and the tool in a direction generally parallel with a surface of said region, the body being formed of a material which is sufficiently friable as it is engaged by the tool during the relative movement to be removed but sufficiently rigid for adjacent material to remain attached, whereby said surface region is formed with a recess having a profile corresponding to the predetermined profile of the tool. The method is particularly suitable for profiling of plaster materials and rigid plastic foams such as phenolic foams.
Claims10
A method of shaping a body of rigid foamed friable material having individual cells suitable for use in the building or furnishing industry, said method comprising:
- engaging a surface region of the body with a tool having a working end with a predetermined profile corresponding to the profile to be formed in said surface region;
- and
- with said body in a rigid state, effecting relative movement between the body and the tool in a direction generally parallel with the surface of said region and generally normal to the working end of the tool, and thereby removing material from said surface region of said body by crumbling individual cells of said rigid foamed material which lie directly in the path of the tool and breaking or snapping off cells at the edge of the path;
- said body being of rigid foamed material which is sufficiently friable when engaged by the tool during the relative movement to be removed from the body but sufficiently rigid so that adjacent material not engaged by said tool remains;
- whereby said surface region is formed with a recess having a profile corresponding to the predetermined profile of the tool.
A method of shaping a body formed of rigid foamed friable plastic material having individual cells and suitable for use in construction, consisting essentially of:
- providing a tool having a working end with a predetermined profile corresponding to a profile to be formed along a generally planar surface of said body, said tool comprising a plurality of pin-like elements having distal ends arranged in said predetermined profile, said distal ends constituting means for fracturing and crumbling individual cells of said rigid foamed material;
- and
- effecting relative movement between said tool and body, while said body is in a rigid state, in a direction parallel with said surface of said body and in a direction perpendicular to said distal ends of said tool to thereby remove material from said surface of said body by crumbling individual cells of said rigid foamed material which lie directly in the path of said distal ends of said tool by fracturing cells from said body which come in contact with the distal ends of said tool, said body being formed of a material which is sufficiently friable when engaged by said tool during said relative movement to be removed from the body but sufficiently rigid so that adjacent material not engaged by said tool remains;
- whereby said profile is formed in said surface of said body in a single pass.
Dependencies are inferred from the claim text.