초록

The present invention relates generally to a fastener retaining system (FRS) and kit for securing a fastener (such as a screw) to a driver (such as a screwdriver) to facilitate one-handed use of the driver in both fastening and un-fastening operations.

대표청구항 ▼

The invention claimed is: 1. A system for retaining a fastener against a driver bit, the system comprising: a resiliently flexible sleeve having an inner surface, a longitudinal axis and at least one driver shaft engaging surface for frictional engagement against a driver shaft having at least one

The invention claimed is: 1. A system for retaining a fastener against a driver bit, the system comprising: a resiliently flexible sleeve having an inner surface, a longitudinal axis and at least one driver shaft engaging surface for frictional engagement against a driver shaft having at least one driver shaft surface, the sleeve including at least three of an odd number of evenly-sized generally arcuate leaflets, the generally arcuate leaflets each having a generally arcuate outer edge extending inwardly from the inner surface of the resiliently flexible sleeve for engagement over and around the head of a fastener wherein the inwardly projecting generally arcuate leaflets are sized to promote centering a fastener within the system. 2. A system as in claim l, wherein the generally arcuate outer edges of adjacent leaflets abut adjacent generally arcuate outer edges of an adjacent leaflet thereby defining an abutment region and wherein the abutment region extends greater than 50% of the distance between the sleeve and a central axis of the sleeve. 3. A system as in claim 1, wherein the first end of the sleeve includes a distal surface outwardly tapered thereby defining a volume radial to the leaflets for allowing the generally arcuate outer edges of a leaflet to fold into the volume during use. 4. A system as in claim 1, wherein the sleeve has a generally triangular cross-section having three shaft engaging surfaces and wherein each shaft engaging surface is inwardly convex to enable the sleeve to be engaged with different size shafts. 5. A system as in claim 1, wherein the sleeve is manufactured from a clear material. 6. A system as in claim 5, wherein the sleeve is clear silicone rubber. 7. A system as in claim 1, wherein the sleeve is manufactured from a luminescent material. 8. A system as in claim 1, wherein the resiliently flexible material has a durometer value of 60-80. 9. A system as in claim 1, wherein the sleeve has a circular cross section. 10. A system for retaining a fastener against a driver bit, the system comprising: a resiliently flexible sleeve for frictional engagement against a driver shaft, the sleeve having an inner surface, a longitudinal axis and a triangular cross section having three inwardly convex shaft engaging surfaces, the sleeve further including three evenly-sized generally arcuate leaflets each having a generally arcuate outer edge extending inwardly from the inner surface of the resiliently flexible sleeve for engagement over and around the head of a fastener and wherein each leaflet has a horizontal length from the inner surface of the sleeve to the longitudinal axis of the sleeve that is less than the vertical displacement of each leaflet from the first end of the sleeve. 11. A system for retaining a fastener against a driver bit, the system comprising: a resiliently flexible sleeve portion with an outer surface and a driver shaft engaging inner surface for frictional engagement with an outer surface of a driver shaft, said sleeve portion having an upper driver shaft opening; and a resiliently flexible fastener engagement sleeve lower section formed integrally with said resiliently flexible sleeve portion, said sleeve lower section having a sleeve lower section outer surface forming a continuation of said sleeve portion outer surface having a sleeve lower section inner surface forming a continuation of said sleeve portion inner surface, said sleeve lower section having a lower edge defining a fastener opening for receiving a head portion of a fastener through said fastener opening and said sleeve lower section having at least three evenly-sized generally arcuate leaflets comprising an odd number of said generally arcuate leaflets connected to said sleeve lower section inner surface adjacent to said fastener opening, each of said generally arcuate leaflets projecting radially inwardly from said sleeve lower section inner surface toward a central axis of said sleeve lower section and having a generally arcuate outer edge extending inwardly from the lower section inner surface of the sleeve defining fastener centering means for engagement over and around the head portion for centering the head portion within said sleeve lower section and relative to said inner driver shaft engaging surface. 12. A system as in claim 11, wherein said resiliently flexible sleeve portion has a generally triangular cross-section wherein said driver shaft engaging inner surface includes three shaft engaging surface portions, each of said engaging surface portions being connected to two adjacent engaging surface portions at connection regions and being inwardly convex to define a variable shaft size engagement means with each engaging surface portion flexing relative to said connection regions for engagement of said engaging surface portions with different size driver shafts. 13. A system as in claim 12, wherein each generally arcuate outer edge of each of said generally arcuate leaflets abuts a generally arcuate outer edge of a first side adjacent generally arcuate leaflet to define a first side abutment region and each generally arcuate outer edge of each of said generally arcuate leaflets abuts a generally arcuate outer edge of a second side adjacent generally arcuate leaflet to define a second side abutment region and each abutment region extends more than 50% of a distance between said sleeve lower section inner surface and said central axis. 14. A system as in claim 13, wherein said sleeve lower section is inwardly tapered towards said leaflets for defining a volume radial to said leaflets for allowing respective said generally arcuate outer edges of said leaflets to fold into the volume during use. 15. A system as in claim 11, wherein each generally arcuate outer edge of each of said arcuate leaflets abuts a generally arcuate outer edge of a first side adjacent arcuate leaflet to define a first side abutment region and each generally arcuate outer edge of each said arcuate leaflets abuts a generally arcuate outer edge of a second side adjacent arcuate leaflet to define a second side abutment region and each abutment region extends more than 50% of a distance between said sleeve lower section inner surface and said central axis. 16. A system as in claim 15, wherein each leaflet has a radial length extending from said lower section inner surface that is less than an axial displacement range of each leaflet. 17. A system as in claim 13, wherein said sleeve lower section is inwardly tapered towards said leaflets for defining a volume radial to said leaflets for allowing respective said free inner arcuate edges of said leaflets to fold into the volume during use.