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US 3,994,065 AGranted
Foam rubber cutting device
OwnerLyle G. Pluminventor
Life of this patent
Estimating the term…
Abstract
A reciprocating saw for cutting foam rubber having a blade with a pattern of no-set teeth interrupted at intervals by toothless arcuate grooves, and a guide member having a slotted, elongated, wedge-shaped section enclosing the portion of the blade rearward of the blade cutting section, and a base section connected to the slotted section for confining the material to be cut above the base and in the cutting region of the blade during the cutting operation.
Claims11
A device for cutting foam rubber-like material comprising
- a. motor means having a reciprocatingly moving member:
- b. blade means consisting of a single blade connected for reciprocating movement to said reciprocatingly moving member, said blade having a longitudinal cutting edge section comprising a pattern of toothed sections and toothless sections each having an axis aligned with the central axis of said blade;
- said toothed sections consisting of downwardly directed teeth and
- c. a guide member comprising a longitudinally extending slotted section and a transverse base section, said slotted section having opposing walls defining a longitudinal slot therebetween, said blade being partially located within said slot with said longitudinal cutting section of said blade extending from said slot, said base section having an opening in opposing relationship to said slot sufficient to allow said blade to pass therethrough during reciprocal movement of said blade, said base section comprising a bottom plate and a top plate joined at a forward point to said bottom plate, said top plate having a forward portion inclining from said forward point and a rearward portion extending from said forward portion, said rearward portion being located in a plane perpendicular to said slotted section whereby said rearward portion provides a platform for supporting said foam rubber-like material normal to said blade during the cutting operation.
1 more element
A method for cutting foam rubber-like material comprising:
- 1. providing reciprocating blade means, said blade means consisting of a single blade having a longitudinal cutting edge section comprising a pattern of toothed sections and toothless sections, said toothed and toothless sections being substantially equal in length and depth, said toothed sections consisting of downwardly directed teeth,
- 2. providing a guide member operatively associated with said blade means, said guide member comprising a slotted section having opposing walls defining a slot therebetween, said blade means being partially located within said slot with said longitudinal cutting edge section extending from said slot, said opposing walls of said slotted section diverging from said slot such that said slotted section presents a wedge-shape to said material being cut, said guide member further comprising a base section having an opening in opposing relationship to said slot sufficient to allow said blade to pass therethrough during reciprocal movement of said blade, said base section comprising a bottom plate and a top plate joined at a forward point to said bottom plate, said top plate having a forward portion inclining from said forward point and a rearward portion extending from said forward portion, said rearward portion including said opening and being disposed at a right angle to the longitudinal axis of said blade to provide a platform for presenting said foam-rubber like material to said blade at a right angle to said blade,
- 3. locating said foam-rubber like material on said rearward portion of said guide section, and
- 4. feeding said foam-rubber like material into said blade whereby said material is compressed between said teeth and said rearward portion by said downwardly directed teeth as said material is cut by said teeth.
1 more element
Dependencies are inferred from the claim text.