US3734805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic sewing machine
Assignee: Branson Ultrasonics Corp
•
Filing: 1971-07-27
•
Granted: 1973-05-22
•
Expires: 1991-07-27
Abstract
Abstract An ultrasonic transducer assembly including a horn, is mounted in a sleeve bearing for axial movement by gravity to bring the horn toward an anvil. A spring actuated lever presses the transducer assembly toward the anvil with the final spring pressed position determined by an adjustable stop. The lever may be rotated by control means against the pressure of the spring to withdraw the assembly from the stop and to release it thereafter for spring movement back against the stop. The spring pressure is adjustable to determine the pressure required to accept the reaction to the ultrasonic vibrations of the horn, and the stop is adjustable to determine the positioning of the assembly relatively to the anvil.
Inventors
- 👤 E Obeda
- 👤 F Parry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:51
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/08; B29C65/083; B29C65/086; B29C66/00; B29C66/80; B29C66/81; B29C66/816; B29C66/8161; B29C66/82; B29C66/822; B29C66/8221; B29C66/8223; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/84; B29C66/845; B29C66/90; B29C66/92; B29C66/924; B29C66/9261; B29C66/92651; B29C66/92653; B29C66/93; B29C66/934; B29C66/93451; B29C66/40; B29C66/41; B29C66/43; B29C66/824; B29C66/8242
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
226 words
In a machine of the class described comprising: a main frame; an anvil over which material to be sewed is moved; an ultrasonic transducer assembly including a horn adapted to resonate and contact material passed over said anvil for providing ultrasonic energy to the material; bearing means supported by said main frame for mounting said assembly for gravitational sliding movement toward said anvil in an axis parallel to the axis of vibration of said horn while holding said assembly against movement except along said axis; a spring supplementary to gravity urging said assembly along said axis toward sand anvil and said spring applying pressure to said transducer assembly through means of a pivoted lever which is urged by said pressure in a direction corresponding to the movement of said assembly toward the material to be sewed; adjustable means disposed for limiting the motion of said assembly in said bearing means toward said anvil; means for adjusting the force of said spring to cause the pressure of said spring against said assembly with gravity to oppose the reaction forces effective upon said ultrasonic transducer assembly as said horn contacts the material, and means for moving said lever independently and against the pressure of said spring in a direction reverse to that in which it is urged by said spring, while not disturbing the adjustment of said spring.
Claim 2
Dependent Claim
226 words
In a machine of the class described comprising: a main frame; an anvil over which material to be sewed is moved; an ultrasonic transducer assembly including a horn adapted to resonate and contact material passed over said anvil for providing ultrasonic energy to the material; bearing means supported by said main frame for mounting said assembly for gravitational sliding movement toward said anvil in an axis parallel to the axis of vibration of said horn while holding said assembly against movement except along said axis; a spring supplementary to gravity urging said assembly along said axis toward sand anvil and said spring applying pressure to said transducer assembly through means of a pivoted lever which is urged by said pressure in a direction corresponding to the movement of said assembly toward the material to be sewed; adjustable means disposed for limiting the motion of said assembly in said bearing means toward said anvil; means for adjusting the force of said spring to cause the pressure of said spring against said assembly with gravity to oppose the reaction forces effective upon said ultrasonic transducer assembly as said horn contacts the material, and means for moving said lever independently and against the pressure of said spring in a direction reverse to that in which it is urged by said spring, while not disturbing the adjustment of said spring.
Claim 3
Dependent Claim
47 words
In the combination of claim 1, said lever being pivoted on said main frame and having a pressure surface pressing against said transducer assembly to urge said assembly in the direction of its gravitational urge, said spring moving said lever on its pivot against said transducer assembly.
Claim 4
Dependent Claim
57 words
In the combination of claim 1, said bearing means being a sleeve bearing; an opening in said sleeve bearing through which said lever extends toward said transducer assembly, and said transducer assembly having a surface intermediate of its length engaged by said lever whereby said lever imparts movement to said assembly in either one of opposed directions.
Claim 5
Dependent Claim
233 words
In a machine of the class described comprising: a main frame; an anvil over which material to be sewed is moved; an ultrasonic transducer assembly including a horn adapted to resonate and contact material passed over said anvil for providing ultrasonic energy to the material; bearing means supported by said main frame for mounting said assembly for gravitational sliding movement toward said anvil in an axis parallel to the axis of vibration of said horn while holding said assembly against movement except along said axis; a spring supplementary to gravity urging said assembly along said axis toward said anvil; adjustable means disposed for limiting the motion of said assembly in said bearing means toward said anvil whereby to provide a stop; means for adjusting the force of said spring to cause the pressure of said spring against said assembly with gravity to oppose the reaction forces effective upon said ultrasonic transducer assembly as said horn contacts the material, and lever means coupled to said transducer assembly and operable for moving when actuated said assembly bodily within said bearing means relative to said anvil against the force exerted by said spring in a direction reverse to that in which said assembly is urged by said spring, while not disturbing the adjustment of said spring, and when not actuated and in the absence of said reaction forces causing said assembly to rest against said stop.
Claim 6
Dependent Claim
233 words
In a machine of the class described comprising: a main frame; an anvil over which material to be sewed is moved; an ultrasonic transducer assembly including a horn adapted to resonate and contact material passed over said anvil for providing ultrasonic energy to the material; bearing means supported by said main frame for mounting said assembly for gravitational sliding movement toward said anvil in an axis parallel to the axis of vibration of said horn while holding said assembly against movement except along said axis; a spring supplementary to gravity urging said assembly along said axis toward said anvil; adjustable means disposed for limiting the motion of said assembly in said bearing means toward said anvil whereby to provide a stop; means for adjusting the force of said spring to cause the pressure of said spring against said assembly with gravity to oppose the reaction forces effective upon said ultrasonic transducer assembly as said horn contacts the material, and lever means coupled to said transducer assembly and operable for moving when actuated said assembly bodily within said bearing means relative to said anvil against the force exerted by said spring in a direction reverse to that in which said assembly is urged by said spring, while not disturbing the adjustment of said spring, and when not actuated and in the absence of said reaction forces causing said assembly to rest against said stop.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |