Double-bladed vibrating concrete screed

• US 20090092444A1
• Filed: 12/03/2008
• Published: 04/09/2009
• Est. Priority Date: 12/03/2008
• Status: Abandoned Application

• Current Assignee: Richard A. Schoen
• Original Assignee: Richard A. Schoen
• Inventors: Schoen, Richard A.
• Application Number:
  US12/315,419
• Publication Number:
  US 20090092444A1
• Time in Patent Office: Days
• US Class Current: 404/118
• CPC Class Codes: E01C 19/405 with spreading-out, levelling or smoothing means other than the tamping or vibrating means for compacting or smoothing, e.g. with screws for spreading-out the previously dumped material, with non-vibratory lengthwise reciprocated smoothing beam E01C19/407 takes precedence

Abstract

A concrete screed includes an engaging frame for readily engaging the mounting fixture of a skid loader or the like, with a pair of spaced parallel frame arms long enough to keep the skid loader off the concrete form, with a screed blade attached to the distal ends of the two frame arms. A pre-screed screeding blade having a V-shape is fixed to the screed blade for knocking down high spots in poured concrete. The side frame arms are free to pivot up and down at both ends. A pair of pulling arms, each pivotally connected to the screed blade at one end and to a side frame arm at the other, exert the actual pulling force that pulls the screed blade across the poured concrete. A pair of hydraulic vibrators fixed to the screed blade vibrates the screed blade to puddle and settle the concrete for leveling.

Claims

1. A concrete screed comprising:

a. a proximal frame member for attaching to a pulling means,

b. a pair of elongated spaced apart parallel frame side arms, said frame side arms further comprising a right-hand side arm and a left-hand side arm, each said side arms having a proximal end pivotally connected to said proximal frame member;

c. a screed blade connected to a distal end of said right-hand side arm and to a distal end of said left-hand side arm, with said screed blade being perpendicular to said right-hand arm and to said left-hand arm; and

d. a pre-screed screeding blade connected to a front face of said screed blade.

2. A concrete screed in accordance with claim 1 further comprising a right-hand side pulling arm having a proximal end connected to said right-hand side arm intermediate its two ends and a distal end connected to said screed blade and a left-hand side pulling arm having a proximal end connected to a said left-hand side arm intermediate its two ends and having a distal end connected to said screed blade.

3. A concrete screed in accordance with claim 1 wherein said screed blade further comprises a vertical face and a horizontal face.

4. A concrete screed in accordance with claim 1 further comprising means for bending said screed blade whereby a crown can be formed in poured concrete.

5. A concrete screed in accordance with claim 1 further comprising means for vibrating said screed blade.

6. A concrete screed in accordance with claim 5 further comprising at least one hydraulic vibrator mounted on said screed blade.

7. A concrete screed in accordance with claim 5 wherein said means for vibrating further comprises means for isolating up and down vibration of said screed blade from said right-hand side arm and from said left-hand side arm.

8. A concrete screed in accordance with claim 7 wherein said means further comprises an upper compression spring and a lower compression spring mounted on a pin with said screed blade having a tongue mounted between said upper compression spring and said lower compression spring at the distal end of each of said right-hand side arm and said left-hand side arm.

9. A concrete screed in accordance with claim 1 wherein said proximal frame member further comprises a right-hand mounting pocket for pivotal attachment of said right-hand side member and a left-hand mounting pocket for pivotal attachment of said left-hand side member.

10. A concrete screed in accordance with claim 9 further comprising means for removably attaching said proximal frame member to the mounting fixtures of a skid loader.

11. A concrete screed in accordance with claim 10 wherein said attaching means further comprises a right-hand hooked sheet bracket member and a left-hand hooked sheet bracket member, both fixed to an upper horizontal frame member of the proximal frame member and a right-hand locator guide member and a left-hand guide member fixed to said proximal frame member.

12. A concrete screed in accordance with claim 1 wherein said pre-screed screeding blade further comprises a forward projecting V-shaped screed blade having a nose portion.

13. A concrete screed comprising:

a. a proximal frame member for attaching to a pulling means,

b. a pair of elongated spaced apart parallel frame side arms, said frame side arms further comprising a right-hand side arm and a left-hand side arm, each said side arms having a proximal end pivotally connected to said proximal frame member;

c. a screed blade connected to a distal end of said right-hand side arm and to a distal end of said left-hand side arm, with said screed blade being perpendicular to said right-hand arm and to said left-hand arm;

d. a pre-screed screeding blade connected to a front face of said screed blade; and

e. a right-hand side pulling arm having a proximal end connected to said right-hand side arm intermediate its two ends and a distal end connected to said screed blade and a left-hand side pulling arm having a proximal end connected to a said left-hand side arm intermediate its two ends and having a distal end connected to said screed blade.

14. A concrete screed in accordance with claim 13 further comprising means for vibrating said screed blade and said connected pre-screed screeding blade.

15. A concrete screed in accordance with claim 14 further comprising means for isolating said right-hand side arm and said left-hand side arm from vibration of said screed blade and said pre-screed screeding blade.

16. A concrete screed in accordance with claim 13 further comprising means for attaching said proximal frame member to the mounting fixtures of a skid loader.

17. A concrete screed comprising:

a. a proximal frame member for attaching to a pulling means,

b. a pair of elongated spaced apart parallel frame side arms, said frame side arms further comprising a right-hand side arm and a left-hand side arm, each said side arms having a proximal end pivotally connected to said proximal frame member;

c. a screed blade connected to a distal end of said right-hand side arm and to a distal end of said left-hand side arm, with said screed blade being perpendicular to said right-hand arm and to said left-hand arm;

d. a pre-screed screeding blade connected to a front face of said screed blade;

e. a right-hand side pulling arm having a proximal end connected to said right-hand side arm intermediate its two ends and a distal end connected to said screed blade and a left-hand side pulling arm having a proximal end connected to a said left-hand side arm intermediate its two ends and having a distal end connected to said screed blade;

f. means for vibrating said screed blade and said connected pre-screed screeding blade and means for isolating said right-hand side arm and said left-hand side arm from vibration of said screed blade and said pre-screed screeding blade.

18. A concrete screed in accordance with claim 17 further comprising means for attaching said proximal frame member to the mounting fixtures of a skid loader.

19. A concrete screed in accordance with claim 17 wherein said vibrating means further comprises at least one hydraulic vibrator.

20. A concrete screed in accordance with claim 17 wherein said screed blade further comprises a vertical face and a horizontal face and said pre-screed screeding blade further comprises a vertical face and a horizontal face and is V-shaped.