Patent US3910579A successfully refreshed from Google Patents.
US3910579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swivel-mounted hunting arrowhead
Assignee: Individual
•
Filing: 1974-06-17
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Granted: 1975-10-07
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Expires: 1994-06-17
Abstract
Abstract A swivel-mounted hunting arrowhead adapted to be secured to the front end of an arrow shaft to be rotatable with respect thereto. Also disclosed is a swivel-action adaptor for securement to the front end of an arrow shaft, the adaptor being constructed to have fastened to it a conventional-type head whereby the latter is rotatably mounted with respect to the shaft. In the case of the adaptor there is provided a short bushing of small diameter, arranged to be cemented in the forward end of the arrow shaft. Turnably carried by the bushing is a spindle which has at its foremost end a tapered head provided with protuberances by which the spindle head can be securely cemented in the socket of an arrowhead of conventional design, thereby to enable the conventional arrowhead to turn freely with respect to the shaft. In another embodiment, the arrowhead is made up of a straight shank and a plurality of tapered blades secured thereto, as well as manually operable means on the shank for releasably clamping the blades with their pointed ends foremost. The construction includes a mounting means in the form of a swivel structure by which the shank of the arrowhead is turnably mounted on the forward end of the shaft, so as to be freely rotatable about the axis of the arrow.
Inventors
- 👤 Harold R Sprandel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:10
CPC Classifications
F; F42; F42B; F42B6/00; F42B6/02; F42B6/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
227 words
An arrowhead construction having, in combination: a. an arrowhead comprising a body portion and tapered blade portions, b. means attached to said body portion, for mounting the same on the front end of an arrow shaft to constitute an extension thereof, c. said mounting means comprising a swivel structure enabling the body and blade portions to have turning movement with respect to, and about the axis of, the arrow shaft, d. the blade portions of the arrowhead having pointed ends and being disposed around and in coextensive relation to said body portion, and e. manually operable means on said body portioN for releasably clamping said blade portions thereto with their pointed ends foremost, f. said body portion of the arrowhead comprising a shank coextensive with the blade portions thereof, g. said clamping means comprising a nut carried by said shank, h. said shank and nut having cooperable screw threads enabling the nut to be advanced against the blade portions, i. said nut having a recess at one end, constituting a mouth portion adapted to receive the rear ends of said blade portions to lock the same to the shank, j. said swivel structure comprising a smooth end portion of the shank and a bushing in which the smooth end portion is turnable, k. said bushing being adapted for securement in the front end of the arrow shaft.
Claim 2
Dependent Claim
227 words
An arrowhead construction having, in combination: a. an arrowhead comprising a body portion and tapered blade portions, b. means attached to said body portion, for mounting the same on the front end of an arrow shaft to constitute an extension thereof, c. said mounting means comprising a swivel structure enabling the body and blade portions to have turning movement with respect to, and about the axis of, the arrow shaft, d. the blade portions of the arrowhead having pointed ends and being disposed around and in coextensive relation to said body portion, and e. manually operable means on said body portioN for releasably clamping said blade portions thereto with their pointed ends foremost, f. said body portion of the arrowhead comprising a shank coextensive with the blade portions thereof, g. said clamping means comprising a nut carried by said shank, h. said shank and nut having cooperable screw threads enabling the nut to be advanced against the blade portions, i. said nut having a recess at one end, constituting a mouth portion adapted to receive the rear ends of said blade portions to lock the same to the shank, j. said swivel structure comprising a smooth end portion of the shank and a bushing in which the smooth end portion is turnable, k. said bushing being adapted for securement in the front end of the arrow shaft.
Claim 3
Dependent Claim
40 words
An arrowhead construction as in claim 1, and further including: a. a thrust washer carried on the smooth portion of the shank and engaged with one end of said bushing to take up thrust forces between the shank and bushing.
Claim 4
Dependent Claim
135 words
An arrowhead construction having, in combination: a. an arrowhead comprising a body portion and tapered blade portions, b. means attached to said body portion, for mounting the same on the front end of an arrow shaft to constitute an extension thereof, c. said mounting means comprising a swivel structure enabling the body and blade portions to have turning movement with respect to, and about the axis of, the arrow shaft, d. a bushing adapted to be received in the shaft of the arrow, and e. a spindle extending into said bushing and constructed to rotate with respect thereto, f. said spindle having means for attachment to said arrowhead body portion, g. said bushing having a stepped bore, h. said spindle having a stepped exterior bearing surface receivable and turnable in the bore of the bushing.
Claim 5
Dependent Claim
135 words
An arrowhead construction having, in combination: a. an arrowhead comprising a body portion and tapered blade portions, b. means attached to said body portion, for mounting the same on the front end of an arrow shaft to constitute an extension thereof, c. said mounting means comprising a swivel structure enabling the body and blade portions to have turning movement with respect to, and about the axis of, the arrow shaft, d. a bushing adapted to be received in the shaft of the arrow, and e. a spindle extending into said bushing and constructed to rotate with respect thereto, f. said spindle having means for attachment to said arrowhead body portion, g. said bushing having a stepped bore, h. said spindle having a stepped exterior bearing surface receivable and turnable in the bore of the bushing.
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) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |