| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Latch for safety hooks | US7818536 | 1936-05-06 | US2100779A | 1937-11-30 | HERTEL RICHARD K |
| 42 | Spring hook | US74153134 | 1934-08-25 | US2058187A | 1936-10-20 | SPALDING JOHN D |
| 43 | Safety hook | US73925534 | 1934-08-10 | US2027376A | 1936-01-14 | GRAU HERBERT E |
| 44 | Safety hook | US74939734 | 1934-10-22 | US2017581A | 1935-10-15 | BLEECKER WARREN F |
| 45 | Rotary and casing hook | US44226030 | 1930-04-07 | US1825018A | 1931-09-29 | SMITH NELSON K |
| 46 | A corpora | US1806908D | US1806908A | 1931-05-26 | ||
| 47 | Safety hook | US45854530 | 1930-05-31 | US1794694A | 1931-03-03 | GUY JENSEN WILLIAM; RAY JENSEN KRESTEN |
| 48 | Hook for handling oil-well casings and the like | US26996728 | 1928-04-14 | US1733509A | 1929-10-29 | STANLEY MINOR BURT; REGAN JAMES J |
| 49 | Safety hook | US25614428 | 1928-02-23 | US1711346A | 1929-04-30 | GREVE EDGAR E |
| 50 | Safety hook | US16121927 | 1927-01-14 | US1709234A | 1929-04-16 | SHAFFER ERNEST J |
| 51 | Sucker-rod hook | US20114927 | 1927-06-24 | US1669418A | 1928-05-15 | LEMEX JOHN D |
| 52 | Safety rod hook | US18935927 | 1927-05-06 | US1650038A | 1927-11-22 | POTTER JOHN E |
| 53 | Safety hook | US10855226 | 1926-05-12 | US1626865A | 1927-05-03 | NEILSON ROBERT E |
| 54 | Cable hook | US14816126 | 1926-11-13 | US1625155A | 1927-04-19 | RATIGAN JAMES P |
| 55 | Spring-well-casing hook | US997125 | 1925-02-18 | US1572390A | 1926-02-09 | KEIM LESTER H |
| 56 | Swivel hook | US3749725 | 1925-06-16 | US1559713A | 1925-11-03 | LESTER FRED C |
| 57 | Safety hook | US70085724 | 1924-03-21 | US1525292A | 1925-02-03 | GREVE EDGAR E |
| 58 | Support becket for rig operations | US13156559 | 2011-06-09 | US08628054B2 | 2014-01-14 | Reece William Kaybidge; Kevin Michael Harty; Andy Rotanak Young |
| A support member or becket for supporting an item during wellbore operations including a body with a support area, and a wear insert removable emplaced over the support area. | ||||||
| 59 | Dual-saddle ear support apparatus | US12603688 | 2009-10-22 | US07735565B2 | 2010-06-15 | Lawrence E. Wells; James Edward Lynch; Neil Edward West; Guy L. McClung, III |
| An apparatus for use in wellbore operations and a method for using it is provided. The apparatus includes a main body, two support ears spaced-apart and projecting from the main body, each having an inner ear part and an outer ear part. The inner ear part is able to support more weight than the outer ear part. In certain aspects, structure for preventing a large support link from being positioned on an outer ear part is provided. The apparatus, may be any of a link adapter, a block adapter, a becket, an elevator, and a drilling hook. | ||||||
| 60 | Safety hook and method | US557894 | 1995-11-14 | US5577787A | 1996-11-26 | Robert K. Klope |
| A safety hook, that includes a hook with a hook end and a latch member with a first end that is pivotably connected to the hook and a second free end. The latch member is pivotable about the first end between a first position where the second end is located away from the hook end and a second position where the second end is located at the hook end. The safety hook also includes a biasing spring for biasing the latch member to the second position. Additionally, the safety hook includes a retainer member mounted on the latch. The retainer member keeps the latch in the first position and prevents the latch from moving to the second position. | ||||||
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