Implements or apparatus for applying pushing or pulling force – Apparatus for hauling or hoisting load – including driven... – Device includes rotatably driven – cable contacting drum
Reexamination Certificate
1999-08-12
2001-05-22
Marcelo, Emmanuel M. (Department: 3653)
Implements or apparatus for applying pushing or pulling force
Apparatus for hauling or hoisting load, including driven...
Device includes rotatably driven, cable contacting drum
C254S286000, C254S293000, C254S336000, C254S362000, C254S398000, C212S296000, C212S348000
Reexamination Certificate
active
06234453
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to winches and, more particularly, to a winch for lifting and positioning rolling doors during the installation of the doors.
2. Description of the Prior Art
U.S. Pat. No. 1,685,144 (Austin) discloses a wall board lidder which includes a ratchet winch system for raising a platform on which wall board is disposed.
U.S. Pat. No. 1,754,873 (Blackwood) discloses a hoisting apparatus which includes a reversible electric motor and a screw shaft The apparatus includes a boom, and a cable on the boom is secured to a load. As the screw shaft is raised, the load is raised via the cable system. The cable is secured to the boom and extends downwardly and under a pulley on a fixed base, and back up to the boom and over pulleys to where it is fastened to the load. A reversible electric motor is used to raise and lower the screw shaft which in turn raises the boom and the load.
U.S. Pat. No. 1,861,191 (Russell) discloses a lift system which includes a cable wound about a drum and the drum is in turn secured to a gear which meshes with a worm gear. A shaft on the worm gear includes a crank for rotating the worm gear which in turn causes the cable drum to rotate for either reeling out the cable or reeling in the cable. The apparatus is disposed on a wheeled dolly. The apparatus is described as being a service truck truck for lifting refrigerators.
U.S. Pat. No. 2,671,638 (Allen) discloses telescoping members on a cable system for raising and lowering the telescoping members. The apparatus includes a base element to which are secured caster wheels for moving the apparatus.
U.S. Pat. No. 2,714,434 (Peterson) discloses a hoisting system for raising and lowering a platform. The apparatus includes a triangular support system, and a pair of generally parallel like elements of the triangle comprises a slide on which a platform moves.
U.S. Pat. No. 2,896,908 (Stone) discloses a telescoping mast hoisting apparatus which utilizes a chain drive.
U.S. Pat. No. 2,983,474 (Hanna) discloses another telescoping mast system which includes a triangular base and castor wheels secured to the base for moving the apparatus. A crank cable system is used for raising and lowering the telescoping members.
U.S. Pat. No. 3,272,286 (Leduc) discloses a hoist system having telescoping members disposed on a movable base. The telescoping members are raised and lowered by means of a screw jack rotated by a gearing system and a hand crank.
U.S. Pat. No. 3,891,184 (Fields) discloses a telescoping mast system which includes a movable base. Telescoping members are raised and lowered by a hand crank and a cable. The telescoping members include a fixed outer tube, a middle tube and an inner tube. A single cable is used to raise the two movable tubular members. The cable extend through pulleys on the middle tube and is secured to the inner tube. Accordingly, as the cable is shortened, both the inner tube and the middle tube move upwardly.
U.S. Pat. No. 4,508,316 (Millard) discloses a telescoping system utilizing a hand crank and a cable for lifting a pair of telescoping members. The telescoping members are disposed on a movable base and an outer fixed tube is secured to the base, while a pair of telescoping members nest within each other. The telescoping members include a middle member and an inner member, and a single cable is used to lift both telescoping members at the same time by means of a single cable. The single cable utilizes pulleys on the middle member and is secured to the upper portion of the inner member.
U.S. Pat. No. 5,078,364 (Harrell) discloses a lock system for locking a telescoping mast in a desired location. A single cable is used to raise the mast, and to raise a platform on which a load is disposed. The apparatus includes wheels for moving the apparatus to a desired location.
SUMMARY OF THE INVENTION
The invention described and claimed herein comprises a winch apparatus for lifting rolling steel doors during the installation process of the rolling door. A movable base includes stabilizing legs and wheels secured to the base frame disposed slightly above the base frame when the apparatus is in its use position, but the wheels are used for moving the apparatus into position by tilting the apparatus. Telescoping members are secured to the base and are extended to support the rolling door. The innermost telescoping member includes an arm, and a cable extends through the innermost telescoping member and through the arm. A lifting sling is secured to the outer end of the cable for lifting the rolling steel door into position. In the use environment, the arm is disposed against the building, thus providing stability for the apparatus. A reversible electric motor powers the winch for raising and lowering the lifting sling, while a hand driven winch and separate cable system are used to raise and lower the telescoping members.
Among the objects of the present invention are the following:
To provide new and useful winch apparatus;
To provide new and useful winch apparatus for lifting a rolling steel door;
To provide new and useful winch apparatus including a base and telescoping members secured to the base;
To provide new and useful portable winch apparatus including telescoping members and an arm extending outwardly from the telescoping members;
To provide new and useful winch apparatus including telescoping members and a cable system for raising the telescoping members and a separate cable system for lifting a load secured to an arm extending outwardly from one of the telescoping members; and
To provide new and useful winch apparatus including wheels for moving the winch apparatus to a use environment and a base having stabilizing arms disposed adjacent to the wheels.
REFERENCES:
patent: 326336 (1885-09-01), Sandberg et al.
patent: 1428887 (1922-09-01), Hescock
patent: 1685144 (1928-09-01), Austin
patent: 1699587 (1929-01-01), Grenier
patent: 1754873 (1930-04-01), Blackwood
patent: 1861191 (1932-05-01), Russell
patent: 2671638 (1954-03-01), Allen
patent: 2714434 (1955-08-01), Peterson
patent: 2896908 (1959-07-01), Stone
patent: 2928493 (1960-03-01), Clements
patent: 2983474 (1961-05-01), Hanna
patent: 3272286 (1966-09-01), Leduc
patent: 3891184 (1975-06-01), Fields
patent: 4508316 (1985-04-01), Millard
patent: 4616225 (1986-10-01), Woudenberg
patent: 5078364 (1992-01-01), Harrell
patent: 1126093 (1962-03-01), None
patent: 1281128 (1968-10-01), None
patent: 1371368 (1964-07-01), None
patent: 1548578 (1968-12-01), None
patent: 203365 (1966-04-01), None
Marcelo Emmanuel M.
Shields H. Gordon
LandOfFree
Rolling door winch apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rolling door winch apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rolling door winch apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2487240