US4718370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mast raising mechanism for sailboat
Assignee: Individual
•
Filing: 1986-12-31
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Granted: 1988-01-12
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Expires: 2006-12-31
Abstract
Abstract The mast raising mechanism operates on a hinged mast and includes an elongated base section that is removably attached to the lower mast section that is uprightly affixed in the boat. An elongated extender section is telescopically extended from the base section and is locked in place. A pulley is mounted at the top of the extender section. A line, attached to the mid region of the mast, passes over the top of the pulley and the end of the line is acted on by a crank which is on the base section. Due to the height of the base section plus extender section, and due to the angle of the line, a person can easily wind up the line and raise the mast.
Inventors
- 👤 Alejandro Portell-Vila
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:15
CPC Classifications
B; B63; B63B; B63B15/00; B63B15/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
180 words
A mast raising mechanism for raising a mast that is hinged to a lower mast section uprightly affixed in a sailboat, said mast raising mechanism comprising: (a) an elongated base section having means for removably mounting said elongated base section to said lower mast section in a vertical position, (b) said lower mast section including a cup-like holder adapted to receive the lower end of said elongated base section and including a slot therein, (c) said elongated base section having a finger adapted to fit into said slot and hook against an adjacent side wall of said lower mast section when said lower end of said elongated base section is set in said cup-like holder, (d) an extender section telescopically movable with respect to said elongated base section and having a means for locking said extender section to said elongated base section when said extender section is fully extended, and (e) means for pulling said mast from a substantially horizontal position to a substantially vertical position via a pulling force directing means mounted at the top of said extender section.
Claim 2
Dependent Claim
180 words
A mast raising mechanism for raising a mast that is hinged to a lower mast section uprightly affixed in a sailboat, said mast raising mechanism comprising: (a) an elongated base section having means for removably mounting said elongated base section to said lower mast section in a vertical position, (b) said lower mast section including a cup-like holder adapted to receive the lower end of said elongated base section and including a slot therein, (c) said elongated base section having a finger adapted to fit into said slot and hook against an adjacent side wall of said lower mast section when said lower end of said elongated base section is set in said cup-like holder, (d) an extender section telescopically movable with respect to said elongated base section and having a means for locking said extender section to said elongated base section when said extender section is fully extended, and (e) means for pulling said mast from a substantially horizontal position to a substantially vertical position via a pulling force directing means mounted at the top of said extender section.
Claim 3
Dependent Claim
26 words
A mast raising mechanism as claimed in claim 1 wherein said pulling force directing means is a pulley mounted at the top of said extender section.
Claim 4
Dependent Claim
36 words
A mast raising mechanism as claimed in claim 2 wherein a line is attached to said mast at a mid section thereof, said line is run through said pulley to said means for pulling said mast.
Claim 5
Dependent Claim
24 words
A mast raising means as claimed in claim 3 wherein said means for pulling is a crank mechanism mounted on said elongated base section.
References Cited (Backward Citations)
US2892555A
Cited
DE3327227A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-11 | 1991-07-13 | 1992-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-11 | 1995-07-13 | 1996-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-11 | 1999-07-13 | 2000-01-12 | $7700.00 | Window Closed / Lapsed |