Patent US3875812A successfully refreshed from Google Patents.
US3875812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeder drive
Assignee: General Electric Co
•
Filing: 1973-04-04
•
Granted: 1975-04-08
•
Expires: 1993-04-04
Abstract
Abstract Machine gun feeder drive is provided with two oppositely driven pawls, each for driving a ratchet, which ratchet has the same number of teeth as the feeder sprocket, and which pawls have the midpoints of their respective strokes, with respect to the axis of the driven ratchet as viewed in a plane normal to said axis, separated by an angular distance equivalent to an odd number of half-tooth spaces of the driven ratchet. The aforementioned feature causes the drive mechanism to have the characteristic that it may be assembled at any initial position, and will, at the end of one complete cycle of the driving pawls, have been moved into properly synchronized position.
Inventors
- 👤 Robert E Chiabrandy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:09
CPC Classifications
F; F41; F41A; F41A9/00; F41A9/29; F41A9/30; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/1856; Y10T74/21; Y10T74/2133; Y10T74/2136
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
181 words
An auto-synchronizing drive assembly, comprising: a cyclically reciprocating driving means having a recoil stroke and a counterrecoil stroke within each cycle; a unidirectionally driven means coupled to and driven by said driving means; said driven means having a plurality of teeth spaced apart by a uniform angular tooth pitch; said driving means having: a first element having a stroke for engaging and driving, during said recoil stroke, one of said plurality of teeth of said driven means a first angular distance in a first direction, and a second element having a stroke for engaging and driving, during said counter-recoil stroke, another one of said plurality of teeth of said driven means a second angular distance in said first direction; the midpoint of said stroke of said first element being spaced from the mid-point of said stroke of said second element by a angular distance equal to an odd integer multiple of half-tooth pitches of said driven means; said driving means driving said driven means up to one tooth pitch during the initial cycle, and one tooth pitch during each subsequent cycle.
Claim 2
Dependent Claim
181 words
An auto-synchronizing drive assembly, comprising: a cyclically reciprocating driving means having a recoil stroke and a counterrecoil stroke within each cycle; a unidirectionally driven means coupled to and driven by said driving means; said driven means having a plurality of teeth spaced apart by a uniform angular tooth pitch; said driving means having: a first element having a stroke for engaging and driving, during said recoil stroke, one of said plurality of teeth of said driven means a first angular distance in a first direction, and a second element having a stroke for engaging and driving, during said counter-recoil stroke, another one of said plurality of teeth of said driven means a second angular distance in said first direction; the midpoint of said stroke of said first element being spaced from the mid-point of said stroke of said second element by a angular distance equal to an odd integer multiple of half-tooth pitches of said driven means; said driving means driving said driven means up to one tooth pitch during the initial cycle, and one tooth pitch during each subsequent cycle.
Claim 3
Dependent Claim
200 words
An auto-synchronizing drive assembly, comprising: a cyclically rocking driving means having a recoil stroke and a counter-recoil strike within each cycle; a unidirectionally driven ratchet means coupled to and driven by said driving means; said ratchet means having a plurality of teeth angularly spaced apart on an axis of rotation by a uniform tooth pitch; said driving means having: a first element having a stroke for engagement and driving, during said recoil stroke, one of said plurality of teeth of said ratchet means a first angular distance in a first direction, and a second element having a stroke for engaging and driving, during said counter-recoil stroke, another one of said plurality of teeth of said ratchet means a second angular distance in said first direction; the mid-point of said stroke of said first element being spaced from the mid-point of said stroke of said second element by an included angle, having its apex coincident with said axis of rotation of said ratchet means, equal to an odd integer multiple of half-tooth pitches of said ratchet means; said driving means driving said ratchet means up to one tooth pitch during the initial cycle, and one tooth pitch during each subsequent cycle.
Claim 4
Dependent Claim
200 words
An auto-synchronizing drive assembly, comprising: a cyclically rocking driving means having a recoil stroke and a counter-recoil strike within each cycle; a unidirectionally driven ratchet means coupled to and driven by said driving means; said ratchet means having a plurality of teeth angularly spaced apart on an axis of rotation by a uniform tooth pitch; said driving means having: a first element having a stroke for engagement and driving, during said recoil stroke, one of said plurality of teeth of said ratchet means a first angular distance in a first direction, and a second element having a stroke for engaging and driving, during said counter-recoil stroke, another one of said plurality of teeth of said ratchet means a second angular distance in said first direction; the mid-point of said stroke of said first element being spaced from the mid-point of said stroke of said second element by an included angle, having its apex coincident with said axis of rotation of said ratchet means, equal to an odd integer multiple of half-tooth pitches of said ratchet means; said driving means driving said ratchet means up to one tooth pitch during the initial cycle, and one tooth pitch during each subsequent cycle.
Claim 5
Dependent Claim
167 words
An auto-synchronizing drive assembly, comprising: a cyclically reciprocating driving means having a recoil stroke and a counter-recoil stroke within each cycle; a unidirectionally driven means coupled to and driven by said driving means; said driven means having a plurality of teeth spaced apart by a uniform tooth pitch; said driving means having: a first element having a stroke for engaging and driving, during said recoil stroke, one of said plurality of teeth of said driven means a first angular distance in a first direction, and a second element having a stroke for engaging and driving, during said counter-recoil stroke, another one of said plurality of teeth of said driven means a second angular distance in said first direction; the stroke of said first element being less than one tooth pitch and the stroke of said second element being less than two tooth pitches; said driving means driving said driven means up to one tooth pitch during the initial cycle, and one tooth pitch during each subsequent cycle.
Claim 6
Dependent Claim
167 words
An auto-synchronizing drive assembly, comprising: a cyclically reciprocating driving means having a recoil stroke and a counter-recoil stroke within each cycle; a unidirectionally driven means coupled to and driven by said driving means; said driven means having a plurality of teeth spaced apart by a uniform tooth pitch; said driving means having: a first element having a stroke for engaging and driving, during said recoil stroke, one of said plurality of teeth of said driven means a first angular distance in a first direction, and a second element having a stroke for engaging and driving, during said counter-recoil stroke, another one of said plurality of teeth of said driven means a second angular distance in said first direction; the stroke of said first element being less than one tooth pitch and the stroke of said second element being less than two tooth pitches; said driving means driving said driven means up to one tooth pitch during the initial cycle, and one tooth pitch during each subsequent cycle.
Claim 7
Dependent Claim
174 words
An auto-synchronizing drive assembly, comprising: a cyclically rocking driving means having a recoil stroke and a counter-recoil stroke within each cycle; a unidirectionally driven ratchet means coupled to and driven by said driving means; said ratchet means having a plurality of teeth angularly spaced apart on an axis of rotation by a uniform tooth pitch; said driving means having: a first element having a stroke for engaging and driving, during said recoil stroke, one of said plurality of teeth of said ratchet means a first angular distance in a first direction, and a second element having a stroke for engaging and driving, during said counter-recoil stroke, another one of said plurality of teeth of said ratchet means a second angular distance in said first direction; the stroke of said first element being less than one tooth pitch and the stroke of said second element being less than two tooth pitches; said driving means driving said ratchet means up to one tooth pitch during the initial cycle, and one tooth pitch driving each subsequent cycle.
Claim 8
Dependent Claim
174 words
An auto-synchronizing drive assembly, comprising: a cyclically rocking driving means having a recoil stroke and a counter-recoil stroke within each cycle; a unidirectionally driven ratchet means coupled to and driven by said driving means; said ratchet means having a plurality of teeth angularly spaced apart on an axis of rotation by a uniform tooth pitch; said driving means having: a first element having a stroke for engaging and driving, during said recoil stroke, one of said plurality of teeth of said ratchet means a first angular distance in a first direction, and a second element having a stroke for engaging and driving, during said counter-recoil stroke, another one of said plurality of teeth of said ratchet means a second angular distance in said first direction; the stroke of said first element being less than one tooth pitch and the stroke of said second element being less than two tooth pitches; said driving means driving said ratchet means up to one tooth pitch during the initial cycle, and one tooth pitch driving each subsequent cycle.
Claim 9
Dependent Claim
206 words
An auto-synchronizing drive assembly, comprising: a cyclically reciprocating driving means having a recoil stroke and a counter-recoil stroke within each cycle; a unidirectionally driven means coupled to and driven by said driving means; said driven means having a plurality of teeth spaced apart by a uniform angular tooth pitch; said driving means having: a first element having a stroke for engaging and driving, during said recoil stroke, one of said plurality of teeth of said driven means a first angular distance in a first direction, and a second element having a stroke for engaging and driving, during said counter-recoil stroke, another one of said plurality of teeth of said driven means a second angular distance in said first direction; the mid-point of said stroke of said first element being spaced from the mid-point of said stroke of said second element by a angular distance approximating an odd integer multiple of half-tooth pitches of said driven means, and the stroke of said first element being less than one tooth pitch and the stroke of said second element being less than two tooth pitches; said driving means driving said driven means up to one tooth pitch during the initial cycle, and one tooth pitch during each subsequent cycle.
Claim 10
Dependent Claim
206 words
An auto-synchronizing drive assembly, comprising: a cyclically reciprocating driving means having a recoil stroke and a counter-recoil stroke within each cycle; a unidirectionally driven means coupled to and driven by said driving means; said driven means having a plurality of teeth spaced apart by a uniform angular tooth pitch; said driving means having: a first element having a stroke for engaging and driving, during said recoil stroke, one of said plurality of teeth of said driven means a first angular distance in a first direction, and a second element having a stroke for engaging and driving, during said counter-recoil stroke, another one of said plurality of teeth of said driven means a second angular distance in said first direction; the mid-point of said stroke of said first element being spaced from the mid-point of said stroke of said second element by a angular distance approximating an odd integer multiple of half-tooth pitches of said driven means, and the stroke of said first element being less than one tooth pitch and the stroke of said second element being less than two tooth pitches; said driving means driving said driven means up to one tooth pitch during the initial cycle, and one tooth pitch during each subsequent cycle.
Claim 11
Dependent Claim
223 words
An auto-synchronizing drive assembly, comprising: a cyclically rocking driving means having a recoil stroke and a counter-recoil stroke within each cycle; a unidirectionally driven ratchet means coupled to and driven by said driving means; said ratchet means having a plurality of teeth angularly spaced apart on an axis of rotation by a uniform tooth pitch; said driving means having: a first element having a stroke for engaging and driving, during said recoil stroke, one of said plurality of teeth of said ratchet means a first angular distance in a first direction, and a second element having a stroke for engaging and driving, during said counter-recoil stroke, another one of said plurality of teeth of said ratchet means a second distance in said first direction; the mid-point of said stroke of said first element being spaced from the mid-point of said stroke of said second angular element by an included angle, having its apex coincident with said axis of rotation of said ratchet means, approximating an odd integer multiple of halftooth pitches of said ratchet means, and the stroke of said first element being less than one-tooth pitch and the stroke of said second element being less than two-tooth pitches; said driving means driving said ratchet means up to one tooth pitch during the initial cycle, and one tooth pitch during each subsequent cycle.
Claim 12
Dependent Claim
223 words
An auto-synchronizing drive assembly, comprising: a cyclically rocking driving means having a recoil stroke and a counter-recoil stroke within each cycle; a unidirectionally driven ratchet means coupled to and driven by said driving means; said ratchet means having a plurality of teeth angularly spaced apart on an axis of rotation by a uniform tooth pitch; said driving means having: a first element having a stroke for engaging and driving, during said recoil stroke, one of said plurality of teeth of said ratchet means a first angular distance in a first direction, and a second element having a stroke for engaging and driving, during said counter-recoil stroke, another one of said plurality of teeth of said ratchet means a second distance in said first direction; the mid-point of said stroke of said first element being spaced from the mid-point of said stroke of said second angular element by an included angle, having its apex coincident with said axis of rotation of said ratchet means, approximating an odd integer multiple of halftooth pitches of said ratchet means, and the stroke of said first element being less than one-tooth pitch and the stroke of said second element being less than two-tooth pitches; said driving means driving said ratchet means up to one tooth pitch during the initial cycle, and one tooth pitch during each subsequent cycle.
References Cited (Backward Citations)
US1075311A
Cited
US1375135A
Cited
US1381046A
Cited
US2276913A
Cited
US2821861A
Cited
US3596556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |