US3986474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boat stay fastening
Assignee: Navtec Inc
•
Filing: 1975-06-27
•
Granted: 1976-10-19
•
Expires: 1995-06-27
Abstract
Abstract Boat stay fastening having a main body extending through the mast and having a hollow cap at each end, the interior of each cap having a spherical surface in which resides a ball adapted to be attached to a stay.
Inventors
- 👤 Kenneth L. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:59
CPC Classifications
B; B63; B63H; B63H9/00; B63H9/04; B63H9/08; B63H9/10; B63B; B63B15/00; B63B15/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
108 words
Boat stay fastening, comprising: a. an elongated main body adapted to extend through the upper portion of a boat mast, b. a hollow cap adapted to be fastened to one end of the main body, the cap having a generally spherical inner surface and having an aperture, and c. a ball carried in the cap and having a diametral bore adapted to carry the end of a stay extending through the aperture, the main body extending diametrically acrosss the mast with the aforementioned cap at one end and a second, similar cap at the other end, each cap being threadedly mounted on its end of the main body.
Claim 2
Dependent Claim
108 words
Boat stay fastening, comprising: a. an elongated main body adapted to extend through the upper portion of a boat mast, b. a hollow cap adapted to be fastened to one end of the main body, the cap having a generally spherical inner surface and having an aperture, and c. a ball carried in the cap and having a diametral bore adapted to carry the end of a stay extending through the aperture, the main body extending diametrically acrosss the mast with the aforementioned cap at one end and a second, similar cap at the other end, each cap being threadedly mounted on its end of the main body.
Claim 3
Dependent Claim
54 words
Boat stay fastening as recited in claim 1, wherein the mast is hollow and has an outer generally cylindrical surface, wherein the spherical inner surface of the cap has its center of curvature closely adjacent to the outer surface of the mast, and wherein the ball has the same radius as the sperical surface.
Claim 4
Dependent Claim
23 words
Boat stay fastening as recited in claim 1, wherein the bore in the ball has a counterbore into which the stay is headed.
Claim 5
Dependent Claim
25 words
Boat stay fastening as recited in claim 1, wherein each cap has a head with a shoulder normally engaging the outer surface of the mast.
Claim 6
Dependent Claim
104 words
Boat stay fastening as recited in claim 4, wherein a slot is formed in each head, the slot having a width at least as large as the diameter of the stay, wherein the slot extends entirely through the wall of the cap from the outer surface of the head to the spherical inner surface, extent of the slot being sufficient to allow the ball and stay to swing from a first position in which the stay is coaxial of the main body to a second position in which stay extends at an acute angle to a generatrix of the outer surface of the mast.
Claim 7
Dependent Claim
54 words
Boat stay fastening as recited in claim 4, wherein each cap has a portion of reduced diameter extending away from the shoulder of the head, wherein the mast is provided with an aperture in which the reduced portion fits snugly, and wherein the main body and its threaded ends lie entirely within the mast.
Claim 8
Dependent Claim
67 words
Boat stay fastening, comprising a. an elongated main body extending through the upper portion of a boat mast, b. a hollow cap fastened to one end of the main body, the cap having a generally spherical inner surface and having an aperture, and c. a ball carried in the cap and having a diametral bore in which lies the end of a stay extending through the aperture.
Claim 9
Dependent Claim
67 words
Boat stay fastening, comprising a. an elongated main body extending through the upper portion of a boat mast, b. a hollow cap fastened to one end of the main body, the cap having a generally spherical inner surface and having an aperture, and c. a ball carried in the cap and having a diametral bore in which lies the end of a stay extending through the aperture.
Claim 10
Dependent Claim
54 words
Boat stay fastening as recited in claim 7, wherein the mast is hollow and has an outer generally cylindrical surface, wherein the spherical inner surface of the cap has its center of curvature closely adjacent to the outer surface of the mast, and wherein the ball has the same radius as the spherical surface.
Claim 11
Dependent Claim
23 words
Boat stay fastening as recited in claim 7, wherein the bore in the ball has a counterbore into which the stay is headed.
Claim 12
Dependent Claim
53 words
Boat stay fastening as recited in claim 7, wherein the boat mast is a metal tube, wherein the main body extends diametrically across the mast with the aforementioned cap at one end and a second, similar cap at the other end, each cap being threadedly mounted on its end of the main body.
Claim 13
Dependent Claim
25 words
Boat stay fastening as recited in claim 10, wherein each cap has a head with a shoulder normally engaging the outer surface of the mast.
Claim 14
Dependent Claim
105 words
Boat stay fastening as recited in claim 11, wherein a slot is formed in each head, the slot having a width at least as large as the diameter of the stay, wherein the slot extends entirely through the wall of the cap from the outer surface of the head to the spherical inner surface, the extent of the slot being sufficient to allow the ball and stay to swing from a first position in which the stay is coaxial of the main body to a second position in which stay extends at an acute angle to a generatrix of the outer surface of the mast.
Claim 15
Dependent Claim
54 words
Boat stay fastening as recited in claim 11, wherein each cap has a portion of reduced diameter extending away from the shoulder of the head, wherein the mast is provided with an aperture in which the reduced portion fits snugly, and wherein the main body and its threaded ends lie entirely within the mast.
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) | 1979-10-19 | 1980-04-19 | 1980-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-19 | 1984-04-19 | 1984-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-19 | 1988-04-19 | 1988-10-19 | $7700.00 | Window Closed / Lapsed |