Measuring tape with weatherproof seal
The present invention relates measuring tapes and methods for making thereof. In particular, the measuring tape of the present invention contains a wipe mechanism for cleaning the tape as it retracts into its housing. The wipe mechanism contains a top wipe and a bottom wipe for removing debris from the top and bottom surfaces of the tape, respectively, when it is retracted after use.
1. A measuring tape, comprising:
a. a housing assembly;
b. a tape partially coiled and disposed in the housing assembly, wherein the housing assembly contains a tape port for the retraction and extension of the tape to and from an internal cavity of the housing assembly, and the tape has a concavo-convex cross-sectional shape; and
c. a wipe assembly attached to the housing assembly at the tape port for cleaning the tape when it retracts into the housing assembly, the wipe assembly comprising
i. an upper wipe blade protruding externally from the housing assembly and pressing on a top surface of the tape, and
ii. a lower wipe blade protruding externally from the housing assembly and pressing on a bottom surface the tape, wherein the upper wipe blade and the lower wipe blade provide a slit that mirrors the concavo-convex cross-sectional shape of the tape.
2. The measuring tape of claim 1 , wherein the upper and lower wipe blades are made of a flexible, resilient material.
3. The measuring tape of claim 2 , wherein the flexible, resilient material is self-lubricated polyurethane.
4. The measuring tape of claim 1 , wherein the upper wipe blade forms an angle with top surface of the tape of 0° to about 45°.
5. The measuring tape of claim 1 , wherein the lower wipe blade forms an angle with the bottom surface of the tape of 0° to about 45°.
6. The measuring tape of claim 1 , wherein a first end of the tape comprises a hook assembly containing a hook body extending approximately perpendicular to the tape, and an attachment portion for attaching to the first end of the tape.
7. The measuring tape of claim 6 , wherein the attachment portion floats in the direction of the tape an amount equivalent to the thickness of the hook body.
8. The measuring tape of claim 1 , wherein the tape coils on a spool that is driven by a coiled spring which provides sufficient force to overcome the friction between the wipe assembly and the tape and to retract the tape.
9. The measuring tape of claim 1 , wherein the housing assembly provides a set back wall where the tape port is located under a ledge.
10. A measuring tape, comprising:
a. a housing assembly;
b. a tape partially coiled and disposed in the housing assembly, wherein the housing assembly contains a tape port for the retraction and extension of the tape to and from an internal cavity of the housing assembly; and
c. a wipe assembly attached to the housing assembly at the tape port for cleaning the tape when it retracts into the housing assembly, the wipe assembly comprising
i. an upper wipe blade protruding externally from the housing assembly and pressing on a top surface of the tape, and
ii. lower wipe blade protruding externally from the housing assembly and pressing on a bottom surface the tape, wherein a first end of the tape comprises a hook assembly containing a hook body extending approximately perpendicular to the tape, and an attachment portion for attaching to the first end of the to tape, the attachment portion attaches to the top surface of the tape, said attachment portion containing an elevated portion located between the hook body and the tape port and extending toward the housing assembly and away from the top surface of the tape, the elevated portion configured to prevent the hook assembly from pressing against the upper and lower wipes when the tape is retracted.
11. A method for making a measuring tape, comprising the steps of:
a. providing a tape having a concavo-convex cross-sectional shape;
b. coiling the coiled tape inside a housing assembly with one end of the tape extending outside of the housing assembly through a tape port;
c. attaching a wipe assembly to the housing assembly at the tape port, the wipe assembly comprises
i. an upper wipe blade protruding externally from the housing assembly and pressing on a top surface of the tape, and
ii. a lower wipe blade protruding externally from the housing assembly and pressing on a bottom surface the tape, wherein the upper wipe blade and the lower wipe blade provide a slit that mirrors the concavo-convex cross-sectional shape of the tape.
12. The method of claim 11 , wherein the upper and lower wipe blades are made of a flexible, resilient material.
13. The method of claim 12 , wherein the flexible, resilient material is self-lubricated polyurethane.
14. The method of claim 11 , wherein the upper wipe blade forms an angle with the top surface of the tape of 0° to about 45°.
15. The method of claim 11 , wherein the lower wipe blade forms an angle with the bottom surface of the tape of 0° to about 45°.
16. The method of claim 11 , further comprising the step of attaching a hook assembly to the first end of the tape, the hook assembly contains a hook body extending approximately perpendicular to the tape, and an attachment portion for attaching to the first end of the tape.
17. The method of claim 16 , wherein the housing assembly provides a set back wall where the tape port is located under a ledge.
18. A method for making a measuring tape, comprising the steps of:
a. providing a coiled tape;
b. enclosing the coiled tape inside a housing assembly with one end of the tape extending outside of the housing assembly through a tape port;
c. attaching a wipe assembly to the housing assembly at the tape port, the wipe assembly comprises
i. an upper wipe blade protruding externally from the housing assembly and pressing on a top surface of the tape, and
ii. a lower wipe blade protruding externally from the housing assembly and pressing on a bottom surface the tape,
d. attaching a hook assembly to the first end of the tape, the hook assembly contains a hook body extending approximately perpendicular to the tape, and an attachment portion for attaching to the first end of the tape, wherein the attachment portion attaches to the top surface of the tape, said attachment portion containing an elevated portion located between the hook body and the tape port and extending toward the housing assembly and away from the top surface of the tape, the elevated portion configured to prevent the hook assembly from pressing against the upper and lower wipes when the tape is retracted.
19. A method for retrofitting a measuring tape comprising the step of attaching a retrofitting kit over a tape port, wherein the retrofitting kit comprises a base plate having an opening therethrough, the opening being covered with an upper wipe blade and a lower wipe blade and locating over the tape port, such that the upper wipe blade protrudes externally from the opening and presses on a top surface of the tape, and the lower wipe blade protrudes externally from the opening and presses on a bottom surface the tape, wherein the upper wipe blade and the lower wipe blade provide a slit that mirrors the concavo-convex cross-sectional shape of the tape.
20. The method of claim 19 , wherein the upper and lower wipe blades are made of a flexible, resilient material.