US4004778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable roof winch
Assignee: Individual
•
Filing: 1976-03-29
•
Granted: 1977-01-25
•
Expires: 1996-03-29
Abstract
Abstract A portable roof winch comprising a collapsible frame that is adjustable to accommodate the slant of a roof, an extensible beam consisting of two telescoping parts one of which is pivotally mounted on the frame on a vertical axis and the other part being moveable with respect to the pivot and having a manually operable winch mounted thereon at a location adjacent to and spaced from the free end of the moveable part, together with a seat for an operator on the moveable part beyond the winch. A cable is taken up on the winch, extends along the beam and is passed over a pulley at the free end of the fixed beam part. A load engaging hook is attached to the end of this cable.
Inventors
- 👤 George J. Steinhagen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:58
CPC Classifications
B; B66; B66C; B66C23/00; B66C23/18; B66C23/20; B66C23/205
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
203 words
In a portable roof winch, a. a collapsible frame for erection on a roof and including a bar which assumes a horizontal position when the frame is erected; b. an extensible beam secured to said bar by a pivotal mounting and comprising two telescopic parts one of which is secured to said pivotal mounting and presenting a free end and the other of which is moveable relative to said pivotal mounting and having a free end; c. a pulley on the free end of said part which is secured to the pivotal mounting; d. a manually operable winch carried by the telescopic part that is moveable relative to said pivotal mounting and located adjacent to but spaced from the free end of that telescopic part; e. an operator's seat on the telescopic part on which said winch is mounted between the free end of that part and the winch; f. mechanism for holding said telescopic parts of the extensible beam in an adjusted position; and g. a cable that is taken up on said winch passes over said pulley, and has a free end with load engaging means thereon whereby counterbalance is supplied by the weight of an operator sitting on the seat.
Claim 2
Dependent Claim
203 words
In a portable roof winch, a. a collapsible frame for erection on a roof and including a bar which assumes a horizontal position when the frame is erected; b. an extensible beam secured to said bar by a pivotal mounting and comprising two telescopic parts one of which is secured to said pivotal mounting and presenting a free end and the other of which is moveable relative to said pivotal mounting and having a free end; c. a pulley on the free end of said part which is secured to the pivotal mounting; d. a manually operable winch carried by the telescopic part that is moveable relative to said pivotal mounting and located adjacent to but spaced from the free end of that telescopic part; e. an operator's seat on the telescopic part on which said winch is mounted between the free end of that part and the winch; f. mechanism for holding said telescopic parts of the extensible beam in an adjusted position; and g. a cable that is taken up on said winch passes over said pulley, and has a free end with load engaging means thereon whereby counterbalance is supplied by the weight of an operator sitting on the seat.
Claim 3
Dependent Claim
26 words
The portable roof winch of claim 1 in which said pivotal mounting is a joint providing swinging movement of the beam on vertical and horizontal axes.
Claim 4
Dependent Claim
76 words
The portable roof winch of claim 2 in which the pivotal mounting comprises a bolt having a head secured to one of the telescopic parts of the beam and passes through holes in the median bar which are larger than the diameter of the bolt to provide a loose fit between the median bar and the bolt, a spring washer between the head of the bolt and said median bar, and a nut on said bolt.
Claim 5
Dependent Claim
149 words
The portable roof winch of claim 1 in which said collapsible frame comprises: I. a pair of base bars engaging a roof when the frame is erected thereon, Ii. a pair of legs of fixed lengths pivoted to one of said base bars, Iii. a pair of legs the lengths of which are adjustably pivoted to the other of said base bars, Iv. a pair of cross bars each of which is pivotally connected to the upper end of a leg of fixed length and the upper end of a leg the length of which is adjustable, V. releasable means for holding the two legs pivoted to a cross bar in a vertical plane common to the cross bar to which they are connected, and Vi. a median bar extending between and attached to said cross bar, said median bar constituting the bar of element (a) of claim 1.
Claim 6
Dependent Claim
50 words
The portable roof winch of claim 4 in which each of the legs which are adjustable in length comprise two telescopic members one of which is pivoted to a base bar and the other to a cross bar together with means for securing said telescopic members in an adjusted position.
Claim 7
Dependent Claim
46 words
The portable roof winch of claim 1 in which the part of the extensible beam to which the pivotal mounting is secured is the outer of the telescopic parts and slideably receives the other of the telescopic parts which is thereby constituted the inner telescopic part.
Claim 8
Dependent Claim
65 words
The portable roof winch of claim 6 in which the mechanism for holding the telescopic parts of the extensible beam in an adjusted position comprises an aperture in said outer part, a series of apertures in said inner part any one of which is adapted to align with the aperture in said outer part, and a pin removeably positioned in said apertures when so aligned.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |