Spring clip

• US 6,925,689 B2
• Filed: 07/15/2003
• Issued: 08/09/2005
• Est. Priority Date: 07/15/2003
• Status: Expired due to Fees

• Current Assignee: Jan Folkmar
• Original Assignee: Jan Folkmar
• Inventors: Folkmar, Jan
• Primary Examiner(s): SANDY, ROBERT JOHN
• Application Number:
  US10/619,320
• Publication Number:
  US 20050011053A1
• Time in Patent Office: 756 Days
• Field of Search: 24/305.R, 244/99, 245/00, 245/11, 24/677, 243/27, 245/35, 245/45, 244/95, 244/97, 24D/IG.27
• US Class Current: 24/499
• CPC Class Codes: F16B 2/10 using pivoting jaws
• CPC Class Codes: Y10T 24/15 Bag fasteners
• CPC Class Codes: Y10T 24/3428 having pivoted members
• CPC Class Codes: Y10T 24/44299 Pivoted member also slides
• CPC Class Codes: Y10T 24/44376 Spring or resiliently biased about pivot
• CPC Class Codes: Y10T 24/44479 Flat or leaf spring

Abstract

A clip comprising a pair of jaws connected by a fulcrum for pivotal movement between opposed positions and an arched spring associated with each jaw for biasing the jaws to one position. Each jaw may be molded unitarily with its associated spring and a part of the fulcrum, the fulcrum parts snap fitting together. The arched springs are mounted in back to back relation, and are suitably connected to the jaws by a living hinge. Actuation of the jaws deflects the springs, causing a rolling contact therebetween, with little frictional loss.

Claims

1. A manual tool comprising a pair of jaws, each said jaw having an object engaging portion and an actuating portion;

fulcrum means disposed in spaced apart relation from said object engaging portion and said actuating portion for retaining said jaws in pivoting relationship for movement between a first position and a second position; and

spring means for biasing said jaws to said first position;

wherein said spring means comprises an arched leaf spring associated with each said jaw, each said leaf spring having a proximal end and a distal end;

hinge means anchoring the proximal end of each said leaf spring to an associated jaw with said distal end of each said spring in contact with an associated jaw with said springs in symmetrical, contiguous back to back relationship;

whereby the application of a manual force to said actuating portion of said jaws to move said jaws to their second position will serve to deflect said leaf springs and cause a rolling contact therebetween.

2. A spring clip as defined in claim 1 wherein each said jaw is provided with a guide track for its associated leaf spring.

3. A tool as defined in claim 2 wherein said leaf springs and said jaws are molded from a thermoplastic material.

4. A tool as defined in claim 2 wherein said leaf springs and associated jaws are unitarily molded from a thermoplastic material.

5. A tool as defined in claim 4 wherein said hinge means comprises a living hinge.

6. A tool as defined in claim 4 wherein said fulcrum means is unitarily formed with said jaws.

7. A tool as defined in claim 6 wherein said fulcrum means comprises a plurality of tabs depending from each said jaw, and wherein said tabs are provided with cooperating, snap together gudgeons and gudgeon openings.

8. A tool as defined in claim 7 wherein said jaws are substantially identical.

9. A tool as defined in claim 7 wherein said object-engaging portion is a clamping element biased closed when said jaws are in their first position.

10. A tool as defined in claim 9 wherein said fulcrum means is disposed between said clamping element and said actuating portion.

11. A thermoplastic spring clip comprising a pair of jaws having opposed ends, each having a functional portion adjacent one end thereof and an actuating portion adjacent the opposed end, and a fulcrum therebetween;

spring means biasing said jaws to a position in which said functional portion of one said jaw is in a first desired relationship relative to that of the other jaw;

wherein said spring means comprises an arched leaf spring anchored to each respective one of said pair of jaws by a hinge in symmetrical back to back, contiguous relationship;

and wherein each one of said pair of jaws is provided with a guide track for its associated leaf spring;

application of a manual pressure on said actuating portions to move said functional portions to a second relationship serving to compress said leaf springs resulting in a rolling contact therebetween.

12. A spring clip as defined in claim 11 wherein each said leaf spring is anchored to an associated jaw by a hinge.

13. A spring clip as defined in claim 12 wherein said hinge is a living hinge.

14. A spring clip as defined in claim 11 wherein each said jaw is unitarily formed with its associated leaf spring.

15. A spring clip as defined in claim 11 wherein said fulcrum comprises a plurality of tabs depending from each said jaw, and wherein said tabs are provided with cooperating, snap together gudgeons and gudgeon openings.

16. A spring clip as defined in claim 15 wherein ones of said tabs serve at least in part to define an aperture in said jaws to permit the entry of a post therein.

17. A manual tool comprising a pair of jaws, each said jaw having an object engaging portion and an actuating portion;

fulcrum means disposed in spaced apart relation from said object engaging portion and said actuating portion for retaining said jaws in pivoting relationship for movement between a first position and a second position; and

spring means comprising an arched leaf spring associated with each said jaw, each said leaf spring having a proximal end secured to a said jaw by a hinge and a distal end with said springs in symmetrical, contiguous back to back relationship, the application of a manual force to said actuating portion of said jaws to move said jaws to their second position will acting to deflect said leaf springs and cause a rolling contact therebetween;

wherein each said jaw is unitarily formed together with its associated hinge, leaf spring and also a plurality of tabs provided with cooperating snap together gudgeons and gudgeon openings forming said fulcrum means.

18. A spring clip as defined in claim 17 wherein each said jaw is provided with a guide track for its associated leaf spring.

19. A tool as defined in claim 17 wherein said jaws are substantially identical.

20. A tool as defined in claim 17 wherein said object-engaging portion is a clamping element biased closed when said jaws are in their first position.