초록 ▼

A scraper having a body portion with a front edge and a cover portion slidable relative to the body portion. The blade is received in the body portion with its cutting edge extending beyond the front edge of the body portion. The cover portion is movable relative to the body portion from a retracted

A scraper having a body portion with a front edge and a cover portion slidable relative to the body portion. The blade is received in the body portion with its cutting edge extending beyond the front edge of the body portion. The cover portion is movable relative to the body portion from a retracted position exposing the blade cutting edge to an extended position overlying the blade cutting edge. The cover portion is held in its retracted and/or its extended positions by locking mechanisms on the cover portion and on the body portion which cooperate with each other to hold the cover in its retracted and/or extended positions.

대표청구항 ▼

1. A scraper comprising a body portion having a front edge and a cover portion slidable relative to said body portion, means in said body portion for receiving a blade with its cutting edge extending beyond the front edge of the body portion, said blade being interposed between the said body portion

1. A scraper comprising a body portion having a front edge and a cover portion slidable relative to said body portion, means in said body portion for receiving a blade with its cutting edge extending beyond the front edge of the body portion, said blade being interposed between the said body portion and said cover portion means for moving the cover portion relative to the body portion from a retracted position exposing the blade cutting edge to an extended position overlying the blade cutting edge, means for holding the cover portion in its retracted position, said holding means adapted to hold the cover in its extended positions, said holding means comprising locking means on the cover portion and locking means on the body portion cooperating with each other to hold the cover portion in said retracted and extended positions, said locking means on the cover portion comprising first and second lock means and said locking means on the body portion comprising first and second lock means cooperating respectively with said first and second lock means of the cover portion, said first and second lock means of the cover portion spaced from each other and said first and second lock means on the body portion spaced from each other, said cooperating first lock means comprising protrusion means and indentation means cooperating with each other and said cooperating second lock means comprising lock lug means and lock tab means cooperating with each other. 2. A scraper as set forth in claim 1 wherein the blade receiving means in the body portion has an upper face, side walls and rear walls. 3. A scraper as set forth in claim 2 wherein said first lock means comprise a lock finger on said cover portion having one of said protrusion/indentation cooperating means and the body portion having the other said cooperating means. 4. A scraper as set forth in claim 3 wherein said lock finger is a resilient finger. 5. A scraper as set forth in claim 4 wherein said finger extends rearwardly from the rear of the cover portion. 6. A scraper as set forth in claim 5 wherein said resilient finger is attached to thumbpiece formed by a pair of slots cut in the cover portion. 7. A scraper as set forth in claim 6 wherein said resilient finger has at least a portion below the upper surface of the cover portion. 8. A scraper as set forth in claim 7 wherein said portion extends through an opening in the receiving means to a position below the lower surface of the body portion and wherein the other cooperating means is located. 9. A scraper as set forth in claim 8 wherein protrusion means are provided in said resilient finger wherein indentation means are provided in the lower surface of said body portion. 10. A scraper as set forth in claim 9 wherein a pair of indentations are provided longitudinally spaced from each other and wherein the protrusion is inserted in one of the extensions depending on whether the cover is in its extended or retracted position. 11. A scraper as set forth in claim 2 wherein said second lock means comprise lock tabs on the cover portion and lock lugs on the body portion. 12. A scraper as set forth in claim 11 wherein said lock lugs are spaced above the upper surface of the body portion with the lock tabs adapted to be slidably mounted beneath the lock lugs. 13. A scraper as set forth in claim 12 wherein the thickness of said lock tabs is less than the thickness of the cover portion. 14. A scraper as set forth in claim 13 wherein the lock tabs extend for a distance less than the distance of the cover portion. 15. A scraper as set forth in claim 14 wherein said lock tabs are formed along the side edges of the cover portion. 16. A scraper as set forth in claim 15 wherein openings are formed in the cover portion where the lock tabs terminate. 17. A scraper as set forth in claim 16 wherein the lock lugs are formed adjacent the open front of the body portion. 18. A scraper as set forth in claim 17 wherein said cover portion is movable to a removal position where the lock tabs are moved to a position forwardly of the lugs to permit the cover to be removed by moving the openings past the lugs.