Fire escape – ladder – or scaffold – Platform with elevating or lowering means – Suspended
Patent
1983-12-20
1987-09-22
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Platform with elevating or lowering means
Suspended
182187, 182 7, 182206, 182133, E04G 310
Patent
active
046949348
ABSTRACT:
A portable elevating device constructed according to the preferred embodiment of the present invention is shown as including a winch frame for mounting a winch and a harness assembly secured to the winch frame for supporting an operator. In the preferred embodiment, the free end of the cable of the winch is releasably secured at a vertical position by a C-shaped anchor. The anchor may be positioned at the vertical position by a telescoping pole releasably secured thereto. After the free end of the cable is secured to the vertical position, the operator located in the harness assembly can elevate or lower himself by rolling or unrolling the cable on the winch. The winch frame in its most preferred form includes a rope gripping member for gripping a rope secured to a vertical position and moveable between a non-engaging position and an engaging position to thus operate as a safety line if the winch, cable, or anchor should fail. In its most preferred embodiment, the winch includes a member for stopping rotation of the winch if it reaches a rotational speed limit. In its most preferred embodiment, the winch stopping member includes pivotally mounted members which are rotatable with the winch and have an increasing radial extent with increasing rotational speed due to centrifugal forces. The components of the elevating device can be collapsed and interconnected as a single unit into a transport mode for carrying on the back of the operator.
REFERENCES:
patent: 272129 (1883-02-01), Edmonds
patent: 334237 (1886-01-01), Ketchum
patent: 1073293 (1913-09-01), Sideman
patent: 2791397 (1957-05-01), Coffman
patent: 2939550 (1960-06-01), Duttre
patent: 3460649 (1969-08-01), Baker et al.
patent: 3727723 (1973-04-01), Pitcairn et al.
patent: 3856111 (1974-12-01), Baker
patent: 3871482 (1975-03-01), Southard
patent: 3944022 (1976-03-01), Ming
patent: 3955645 (1976-05-01), Dye
patent: 3960240 (1976-06-01), Cotton
patent: 4161233 (1979-07-01), Wirtz
patent: 4225012 (1930-09-01), Hindle
1983 Catalog of Baker Manufacturing Co., 428 North St., Augustine Road, Valdosta, Ga. 31601.
Catalog sheet of Welding Shop Ltd., 108 Clinton St., LaCross, Wis. 54601.
"Attn: Deerhunters" advertisement of R.A.B. Enterprises, P.O. Box 70171, St. Paul, Minn., 55107.
"Portable Hunter's Stand" advertisment of Hunters Equipment Mfg. Co., Inc., P.O. Box 5654, Route 8, Box 183, San Angelo, Tex., 76902.
"Hunters The Only Deer Stand For You!" advertisement of C. E. Blackwell, Hiway 35-S at Solmes Exit (942 Allen Street), New Boraunfels, Tex.
"The Spartan" advertisement of Channelview Archery, Department ATH, P.O. Drawer Q, Channelview, Tex. 77530.
"Real Trailers" advertisement of Real Trailers, 8874 Culebra, San Antonio, Tex. 78251.
"Texas Hunter" advertisement of Braden Wire & Metal Products, 1310 West Laurel Street, P.O. Box 5087, San Antonio, Tex. 78201.
"Pack-A-Stand" advertisement of Pack-A-Stand Mfg., Co., Inc., 14920 Butternut Street N.W., Anoka, Minn. 55303.
"These Features Make Bucksy The Most Stable Portable Tree Stand Made" advertisement Safariland Hunting Corp., P.O. Box N.N., McLean, Va. 22101.
"Loc-On" advertisement of Loc-On Company, P.O. Box 11, Summerfield, N.C. 27358.
Chin-Shue Alvin
Machado Reinaldo P.
LandOfFree
Portable elevating device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Portable elevating device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Portable elevating device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2053460