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Title: Accessory serving as life saving aid
Claims: I claim: 1. An ice piercing device comprising a substantially vertically directed outer casing forming a hand gripping handle; a pick having its upper end secure with the casing and internally thereof; said casing having a first bore therein; a second bore diametrically greater than the first bore; a pick guard positioned in the second bore for reciprocation therein; said guard having a passage extending therethrough and being reciprocably mounted on the pick; a shoulder formed on the casing at the upper end of the first bore; a spring encircling the pick and interposed between the shoulder and the guard for normally urging the guard downwardly; means within the casing for limiting the downward travel of the guard; said pick having an ice piercing pointed nose at its lower end. 2. An ice piercing device as set forth in claim 1 wherein the guard includes a sheath portion and a head portion diametrically enlarged from the sheath portion and located at the upper end of said sheath portion, the lower end of the spring engaging the guard head portion; a second shoulder formed in the casing at the upper end of the second bore and serving to limit the upward travel of the guard. 3. An ice piercing device as set forth in claim 2 wherein the means for limiting the downward travel of the guard includes a separate bushing secured to and within the casing at the lower end of the second bore, said bushing having a central opening therethrough for closely receiving and guiding the sheath portion of the guard reciprocably. 4. An ice piercing device as set forth in claim 3 wherein a third shoulder is formed in the casing at the lower end of the second bore and the upper surface of the bushing seats against such shoulder. 5. An ice piercing device as set forth in claim 2 wherein the maximum distance of axial travel of the guard relative to the outer casing is less than 50% of the over all length of the outer casing. 6. An ice piercing device as set forth in claim 5 wherein the lower end of the spring abuts and engages the upper end wall of the guard head portion and the wall forming the passage in the guard is closely fitted relative to the outer wall of the pick so as to reciprocably accomodate the pick in substantially the same close fit throughout the full length of the guard relative to the pick. 7. An ice piercing device as set forth in claim 6 wherein the diameter of the pick relative to the inside diameter of the guard passage is substantially constant throughout the full length of travel of the guard relative to the pick. Other info: Inventors: Hammes, Robert B. (Burlington, WI, US) Application Number: 636218 Filing Date: 1975-11-28 Publication_date: 1977-01-11 Assignee: Primary Class(es): 294/26 30/162, 30/164.5, 441/82 Other Classes: US Patent Ref:
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