US3816874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poultry cutter
Assignee: Individual
•
Filing: 1973-04-02
•
Granted: 1974-06-18
•
Expires: 1993-04-02
Abstract
Abstract A hock and neck cutter having a pair of arcuate cutting blades pivotally mounted on the housing, a pneumatic piston and cylinder assembly mounted on said housing and a compound linkage assembly connecting said piston and cylinder assembly to said cutting blades to provide decreasing speed and increasing force in the movement of said blades. A low-force air valve is used to control the pressurization of the piston and cylinder assembly and a discharge air silencer is provided in the discharge passage of the piston and cylinder assembly.
Inventors
- 👤 D Jahnke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:40
CPC Classifications
B; B23; B23D; B23D29/00; B23D29/002; A; A22; A22C; A22C17/00; A22C17/06; A22C21/00; A22C21/0023
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
125 words
A hock and neck cutter comprising, a housing, a pair of identical cutting blades pivotally mounted on said housing, a pneumatic piston and cylinder assembly mounted on said housing, an air inlet passage and an air discharge passage connected to said cylinder assembly, means for operably connecting said cylinder assembly to said blades to provide a decreasing rate of closing speed with increasing force, a source of air under pressure connected to said passage in said cylinder assembly, a pressure responsive valve member to direct air under pressure into the cylinder assembly and being responsive to exhaust pressure from the cylinder assembly to direct exhaust air through the discharge passage, and means in said housing for selectively pressurizing said valve member to pivot said blades.
Claim 2
Dependent Claim
125 words
A hock and neck cutter comprising, a housing, a pair of identical cutting blades pivotally mounted on said housing, a pneumatic piston and cylinder assembly mounted on said housing, an air inlet passage and an air discharge passage connected to said cylinder assembly, means for operably connecting said cylinder assembly to said blades to provide a decreasing rate of closing speed with increasing force, a source of air under pressure connected to said passage in said cylinder assembly, a pressure responsive valve member to direct air under pressure into the cylinder assembly and being responsive to exhaust pressure from the cylinder assembly to direct exhaust air through the discharge passage, and means in said housing for selectively pressurizing said valve member to pivot said blades.
Claim 3
Dependent Claim
47 words
The cutter according to claim 1 wherein said connecting means includes a pair of lever arms each having one end connected to a common point on said cylinder assembly and the other end to a point on the blades spaced from the pivot point of the blades.
Claim 4
Dependent Claim
33 words
The cutter according to claim 1 wherein said pressurizing means includes a trigger controlled low force air valve assembly mounted in said housing to control the admission of air to said inlet passage.
Claim 5
Dependent Claim
78 words
The cutter according to claim 1 wherein said pressure responsive valve member includes a valve element and a valve stem, a V-shaped seal ring mounted on the outer periphery of said valve stem in a position to seal the air inlet passage, said V-shaped seal ring collapsing in response to the force of air entering the passage to allow air under pressure to pass into said cylinder assembly and responding to discharge air to open the discharge passage.
Claim 6
Dependent Claim
21 words
The cutter according to claim 1 including means for silencing the discharge air as it is discharged from the cylinder assembly.
Claim 7
Dependent Claim
109 words
A hock and neck cutter comprising: a body, a pair of cutter blades pivotally mounted on said body for movement between opened and closed positions, a pneumatic piston and cylinder assembly mounted on said body, a pressure responsive valve member to direct air under pressure into the cylinder assembly and being responsive to exhaust pressure from the cylinder assembly to direct exhaust air through the discharge passage, a compound linkage assembly connecting said piston and cylinder assembly to said blades to provide decreasing speed of movement and increasing power when closing said blades, and a trigger operated low force air valve connected to control the pressure responsive valve member.
Claim 8
Dependent Claim
109 words
A hock and neck cutter comprising: a body, a pair of cutter blades pivotally mounted on said body for movement between opened and closed positions, a pneumatic piston and cylinder assembly mounted on said body, a pressure responsive valve member to direct air under pressure into the cylinder assembly and being responsive to exhaust pressure from the cylinder assembly to direct exhaust air through the discharge passage, a compound linkage assembly connecting said piston and cylinder assembly to said blades to provide decreasing speed of movement and increasing power when closing said blades, and a trigger operated low force air valve connected to control the pressure responsive valve member.
Claim 9
Dependent Claim
20 words
The cutter according to claim 6 wherein said cutter blades are identical and each blade includes a radiused cutting edge.
Claim 10
Dependent Claim
34 words
The cutter according to claim 6 wherein said valve includes a V-shaped seal ring positioned to bypass inlet air past the valve into said cylinder assembly and to direct the discharged air to atmosphere.
References Cited (Backward Citations)
US3115667A
Cited
US3165780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |