US3850076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Firearm apparatus
Assignee: Individual
•
Filing: 1972-05-03
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Granted: 1974-11-26
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Expires: 1992-05-03
Abstract
Abstract Firearm apparatus embodied in a semi-automatic, blowback operated rifle. The firearm includes a receiver made of two plates spaced apart to receive a bolt mechanism including a bolt mounted for reciprocal motion within a channel-shaped member; the operating spring for the bolt assembly is received in a slot within the bolt and is retained in place by the channel-shaped member. A unitary firing pin/extractor carried by the bolt functions as a firing pin and also provides multiple extractor functions. A simplified firing mechanism includes a hammer positioned to the rear of a cartridge magazine and operatively connected by a three-finger sear bar to a trigger mounted in front of the magazine. A safety mechanism is provided in conjunction with the trigger guard. Numerous components of this firearm apparatus provide multiple functions contributing to the economy and efficiency of the present firearm apparatus.
Inventors
- 👤 M Atchisson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:11
CPC Classifications
F; F41; F41C; F41C7/00
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
190 words
A bolt assembly for a firearm comprising: a bolt housing defining an interior channel to receive a bolt member for reciprocal sliding movement therein; a bolt member received in said channel; means within said channel maintaining said bolt member in spaced apart relation with said channel; at least one bolt member retaining means operatively interconnected between said bolt housing and said bolt member to define a predetermined extent of reciprocal sliding movement of said bolt member relative to said bolt housing; a resilient member received within said interior channel of said bolt housing and operatively positioned to bias said bolt member in a first direction of said sliding movement; said bolt housing including a pair of generally elongate wall members which are spaced apart to define said interior channel; said means within said channel including means disposed within said interior channel in confronting relation on said wall members to define confronting spaced apart surfaces along which said bolt member moves for said sliding movement; and said bolt member having spaced apart surfaces positioned for sliding contact with said spaced apart surfaces defined by said means disposed on said wall members.
Claim 2
Dependent Claim
190 words
A bolt assembly for a firearm comprising: a bolt housing defining an interior channel to receive a bolt member for reciprocal sliding movement therein; a bolt member received in said channel; means within said channel maintaining said bolt member in spaced apart relation with said channel; at least one bolt member retaining means operatively interconnected between said bolt housing and said bolt member to define a predetermined extent of reciprocal sliding movement of said bolt member relative to said bolt housing; a resilient member received within said interior channel of said bolt housing and operatively positioned to bias said bolt member in a first direction of said sliding movement; said bolt housing including a pair of generally elongate wall members which are spaced apart to define said interior channel; said means within said channel including means disposed within said interior channel in confronting relation on said wall members to define confronting spaced apart surfaces along which said bolt member moves for said sliding movement; and said bolt member having spaced apart surfaces positioned for sliding contact with said spaced apart surfaces defined by said means disposed on said wall members.
Claim 3
Dependent Claim
64 words
The bolt assembly as in claim 1, further comprising: an elongate aperture formed in said channel member; and a cocking handle attached to said bolt member and disposed to extend outwardly of said elongate aperture in said channel member to permit said bolt member to be moved in a second direction of said sliding movement in opposition to the bias of said resilient member.
Claim 4
Dependent Claim
67 words
The bolt assembly as in claim 1, wherein: said bolt member includes a cartridge movement portion; firing pin means having a cartridge firing position and carried on said cartridge movement portion to be selectively movable to a first position whereat said cartridge firing portion is extended to cartridge engaging position and to a second position whereat said cartridge firing portion is withdrawn from said cartridge engaging position.
Claim 5
Dependent Claim
76 words
The bolt assembly as in claim 3, wherein: said cartridge movement portion includes a downwardly extending portion of said bolt member and having a front face of vertical dimension at least as large as the rim diameter of a cartridge intended for use with said bolt assembly; the vertical dimension of said front face being defined by a projection disposed on said bolt member above and extending a spaced distance in front of said front face.
Claim 6
Dependent Claim
203 words
A bolt assembly for a firearm, comprising: a bolt housing defining an interior channel to receive a bolt member for reciprocal sliding movement therein; a bolt member received in said channel; at least one bolt member retaining means operatively interconnected between said bolt housing and said bolt member to define a predetermined extent of reciprocal sliding movement of said bolt member relative to said bolt housing; a resilient member received within said interior channel of said bolt housing and operatively positioned to bias saiD bolt member in a first direction of said reciprocal movement; said one bolt member retaining means including a first elongate slot in said bolt member, one end of said first elongate slot defining a movement stop of said first direction of reciprocal movement; and a first stop member disposed in fixed relation with said bolt housing and extending in sliding fit in said first elongate slot, said one end of said elongate slot and said stop member being located relative to each other so that such movement stop of said bolt member in the first direction relative to said bolt housing is defined by contact of said first stop member and said one end of said first elongate slot.
Claim 7
Dependent Claim
203 words
A bolt assembly for a firearm, comprising: a bolt housing defining an interior channel to receive a bolt member for reciprocal sliding movement therein; a bolt member received in said channel; at least one bolt member retaining means operatively interconnected between said bolt housing and said bolt member to define a predetermined extent of reciprocal sliding movement of said bolt member relative to said bolt housing; a resilient member received within said interior channel of said bolt housing and operatively positioned to bias saiD bolt member in a first direction of said reciprocal movement; said one bolt member retaining means including a first elongate slot in said bolt member, one end of said first elongate slot defining a movement stop of said first direction of reciprocal movement; and a first stop member disposed in fixed relation with said bolt housing and extending in sliding fit in said first elongate slot, said one end of said elongate slot and said stop member being located relative to each other so that such movement stop of said bolt member in the first direction relative to said bolt housing is defined by contact of said first stop member and said one end of said first elongate slot.
Claim 8
Dependent Claim
33 words
The bolt assembly as in claim 5, wherein: the other end of said first elongate slot defines the movement stop of said bolt member in the second direction relative to said bolt housing.
Claim 9
Dependent Claim
82 words
The bolt assembly as in claim 6, further comprising: a second elongate slot in said bolt member; a second stop member disposed in fixed relation with said bolt housing and extending in sliding fit in said second elongate aperture; and said resilient member being disposed within said second elongate slot to exert bias between an end of said second elongate slot and said second stop member, so that said bolt member is biased in said first direction relative to said bolt housing.
Claim 10
Dependent Claim
119 words
The bolt assembly as in claim 7, wherein: said first elongate slot is of certain width in said bolt member; said first stop member is received in said first slot and has a width relative to said certain width of said first slot to permit substantially only sliding movement of said slot relative to said first stop member; said second elongate slot is of certain width in said bolt member to permit substantially only sliding movement in a first plane of said resilient member received within; and said interior channel of said bolt housing has a channel width adjacent the path of reciprocal sliding movement of said second slot to permit substantially only sliding movement of said resilient member.
Claim 11
Dependent Claim
57 words
The bolt assembly as in claim 8, further comprising: spacing means disposed on said bolt housing within said interior channel thereof to define a bolt member passageway of width less than said channel width; said resilient member being retained by said channel width for substantially only vertical movement in a second plane transverse to said first plane.
Claim 12
Dependent Claim
156 words
A bolt assembly for a firearm, comprising: a bolt housing including a pair of side walls which are spaced apart to define a bolt receiving channel having length and having certain width; a bolt member disposed in said channel for reciprocal movement in a direction along the length of said channel, the dimension of said bolt member in width being less than said channel width; spacing means interpositioned between said bolt member and said side walls to position said bolt member for said reciprocal movement along said channel without contact between said side walls and said bolt member, said spacing means comprising at least one spacing member mounted on one of said pair of side walls in confronting sliding contact with a first location along said bolt member; and at least one spacing member mounted on the other of said pair of side walls in confronting sliding contact with a second location along said bolt member.
Claim 13
Dependent Claim
156 words
A bolt assembly for a firearm, comprising: a bolt housing including a pair of side walls which are spaced apart to define a bolt receiving channel having length and having certain width; a bolt member disposed in said channel for reciprocal movement in a direction along the length of said channel, the dimension of said bolt member in width being less than said channel width; spacing means interpositioned between said bolt member and said side walls to position said bolt member for said reciprocal movement along said channel without contact between said side walls and said bolt member, said spacing means comprising at least one spacing member mounted on one of said pair of side walls in confronting sliding contact with a first location along said bolt member; and at least one spacing member mounted on the other of said pair of side walls in confronting sliding contact with a second location along said bolt member.
Claim 14
Dependent Claim
178 words
A bolt assembly for a firearm, comprising: a bolt housing including a pair of side walls which are spaced apart to define a bolt receiving channel having length and having certain width; a bolt member disposed in said channel for reciprocal movement in a direction along the length of said channel, the dimension of said bolt member in width being less than said channel width; spacing means interpositioned between said bolt member and said side walls to position said bolt member for said reciprocal movement along said channel without contact between said side waLls and said bolt member; an elongate slot formed in said bolt member in alignment with the direction of said reciprocal movement; a pin member extending from said bolt housing and received in said elongate slot, said slot being slidably movable with respect to said pin member; and at least one end of said slot being located on said bolt assembly in certain relation relative to said pin member to define a predetermined extent of said reciprocal movement in a selected direction of bolt movement.
Claim 15
Dependent Claim
178 words
A bolt assembly for a firearm, comprising: a bolt housing including a pair of side walls which are spaced apart to define a bolt receiving channel having length and having certain width; a bolt member disposed in said channel for reciprocal movement in a direction along the length of said channel, the dimension of said bolt member in width being less than said channel width; spacing means interpositioned between said bolt member and said side walls to position said bolt member for said reciprocal movement along said channel without contact between said side waLls and said bolt member; an elongate slot formed in said bolt member in alignment with the direction of said reciprocal movement; a pin member extending from said bolt housing and received in said elongate slot, said slot being slidably movable with respect to said pin member; and at least one end of said slot being located on said bolt assembly in certain relation relative to said pin member to define a predetermined extent of said reciprocal movement in a selected direction of bolt movement.
Claim 16
Dependent Claim
70 words
The bolt assembly as in claim 11, wherein said spacing means comprises: a first spacing member surrounding said pin member between one of said pair of side walls and a confronting first location of sliding contact on said bolt member; and a second spacing member surrounding said pin member between the other of said pair of side walls and a confronting second location of sliding contact on said bolt member.
Claim 17
Dependent Claim
75 words
The bolt assembly as in claim 11, wherein said elongate slot is a first elongate slot and said pin member is a first pin member; and further comprising: a second elongate slot formed in said bolt member in alignment with said direction of reciprocal movement; and a second pin member extending from said bolt housing and received in said second elongate slot, said second slot being slidably movable with respect to said second pin member.
Claim 18
Dependent Claim
89 words
The bolt assembly as in claim 13, further comprising: a compression coil spring received in one of said slots between the corresponding pin member and an end of said one slot; the coil diameter of said spring being sufficiently greater than said width dimension of said bolt member so that a portion of said spring coils extend outward of said one slot to make loosely sliding contact with said side walls of said bolt housing, so that said spring is retained within said one slot by said side walls.
Claim 19
Dependent Claim
77 words
The bolt assembly as in claim 13, wherein said spacing means comprises: a first pair of spacing members surrounding said first pin member and respectively positioned between said pair of side walls and said bolt member; and a second pair of spacing members surrounding said second pin member and respectively positioned between said pairs of side walls and said bolt member; said first and second pair of spacing members being in sliding contact with said bolt member.
Claim 20
Dependent Claim
187 words
A bolt assembly for a firearm, comprising: a bolt housing including a pair of side walls which are spaced apart to define a bolt receiving channel having length and having certain width; a bolt member disposed in said channel for reciprocal movement in a direction along the length of said channel, the dimension of said bolt member in width being less than said channel width; spacing means interpositioned between said bolt member and said side walls to position said bolt member for said reciprocal movement along said channel without contact between said side walls and said bolt member; said side walls comprising parallel plane surfaces spaced apart from each other said certain width to define said bolt receiving channel; said bolt member having a pair of parallel plane sides each of which is in confronting spaced apart relation with a corresponding one of said plane surfaces of said side walls; and said spacing means are in sliding contact with said parallel sides of said bolt member to permit said reciprocal movement of said bolt member while maintaining said bolt member out of contact with said side wall.
Claim 21
Dependent Claim
187 words
A bolt assembly for a firearm, comprising: a bolt housing including a pair of side walls which are spaced apart to define a bolt receiving channel having length and having certain width; a bolt member disposed in said channel for reciprocal movement in a direction along the length of said channel, the dimension of said bolt member in width being less than said channel width; spacing means interpositioned between said bolt member and said side walls to position said bolt member for said reciprocal movement along said channel without contact between said side walls and said bolt member; said side walls comprising parallel plane surfaces spaced apart from each other said certain width to define said bolt receiving channel; said bolt member having a pair of parallel plane sides each of which is in confronting spaced apart relation with a corresponding one of said plane surfaces of said side walls; and said spacing means are in sliding contact with said parallel sides of said bolt member to permit said reciprocal movement of said bolt member while maintaining said bolt member out of contact with said side wall.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |