Patent US3814022A successfully refreshed from Google Patents.
US3814022A
Expired / Lapsed
US
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Trolley apparatus for preventing or arresting the fall of an individual
Assignee: United States Steel Corp
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Filing: 1972-05-12
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Granted: 1974-06-04
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Expires: 1992-05-12
Abstract
Abstract Trolley apparatus for preventing or arresting the fall of an individual is horizontally movable along a track which is mounted to one side of a pathway. A handle extends over the pathway to which handle the individual ties his safety line, and by which he grasps the apparatus and propels it along the pathway.
Inventors
- 👤 J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:57
CPC Classifications
A; A62; A62B; A62B35/00; A62B35/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
173 words
Apparatus for arresting the fall of an individUal comprising: a. a support frame; b. a horizontal track mounted on said frame comprising a tubular member of substantially rectangular cross section having a longitudinal slot centered in its lower face; c. a side track fixed to said frame parallel to and at a lower elevation than said first named track; d. a trolley engaging said first named track, bearing against said second named track and horizontally movable along both of said tracks, said trolley including a pair of rollers having a vertical axis and a pair of rollers having a horizontal axis, each of said rollers being engageable with the interior surface of said first named track and a vertically mounted roller at a lower elevation than said first named rollers, engageable with said second named track; e. a rotatable substantially vertical mast depending from said trolley; f. a handle fixed to said mast and extending substantially normal to said mast; and g. means attached to said handle for attachment of a safety line.
Claim 2
Dependent Claim
173 words
Apparatus for arresting the fall of an individUal comprising: a. a support frame; b. a horizontal track mounted on said frame comprising a tubular member of substantially rectangular cross section having a longitudinal slot centered in its lower face; c. a side track fixed to said frame parallel to and at a lower elevation than said first named track; d. a trolley engaging said first named track, bearing against said second named track and horizontally movable along both of said tracks, said trolley including a pair of rollers having a vertical axis and a pair of rollers having a horizontal axis, each of said rollers being engageable with the interior surface of said first named track and a vertically mounted roller at a lower elevation than said first named rollers, engageable with said second named track; e. a rotatable substantially vertical mast depending from said trolley; f. a handle fixed to said mast and extending substantially normal to said mast; and g. means attached to said handle for attachment of a safety line.
Claim 3
Dependent Claim
23 words
Apparatus according to claim 1 further comprising latch means which determine the operating position of said mast and prevent rotation of said mast.
Claim 4
Dependent Claim
179 words
Apparatus for arresting the fall of an individual comprising: a. a support frame; b. a horizontal track mounted on said frame comprising a tubular member of substantially rectangular cross section having a longitudinal slot centered in its lower face; c. a side track fixed to said frame parallel to and at a lower elevation than said first named track; d. a trolley engaging said first named track, bearing against said second named track and horizontally movable along both of said tracks, said trolley including a pair of rollers having a vertical axis and a pair of rollers having a horizontal axis, each of said rollers being engageable with the interior surface of said first named track and a vertically mounted roller at a lower elevation than said first named rollers, engageable with said second named track; e. a substantially vertical mast depending from said trolley; f. a handle adjustably attached to said mast whereby said handle may be positioned at a desired angle from said mast; and g. means attached to said handle for attachment of a safety line.
Claim 5
Dependent Claim
179 words
Apparatus for arresting the fall of an individual comprising: a. a support frame; b. a horizontal track mounted on said frame comprising a tubular member of substantially rectangular cross section having a longitudinal slot centered in its lower face; c. a side track fixed to said frame parallel to and at a lower elevation than said first named track; d. a trolley engaging said first named track, bearing against said second named track and horizontally movable along both of said tracks, said trolley including a pair of rollers having a vertical axis and a pair of rollers having a horizontal axis, each of said rollers being engageable with the interior surface of said first named track and a vertically mounted roller at a lower elevation than said first named rollers, engageable with said second named track; e. a substantially vertical mast depending from said trolley; f. a handle adjustably attached to said mast whereby said handle may be positioned at a desired angle from said mast; and g. means attached to said handle for attachment of a safety line.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |